Number of different taxon statusses in database:

Actinulida Swedmark & Teissier, 1959
Amphidiscosida Schrammen, 1924
Amphinomida
Aspidodiadematoida Kroh & Smith, 2010
Brachypoda Birshteyn, 1960
Capitellida
Cossurida
Demospongiae incertae sedis Vacelet, Perez & Hooper, 2002
Dictyoceratida Minchin, 1900
Doliolida Delage & Hérouard, 1898
Halisarcida Topsent, 1901
Leucettida Hartman, 1958
Limnomedusae Kramp, 1938
Lyssacinosa Ijima, 1927
Lyssacinosida Zittel, 1877
Mormonilloida Boxshall, 1979
Arachnactidae McMurrich, 1910
Archasteridae Viguier, 1878
Arenicolidae Johnston, 1835
Asconiscidae Bonnier, 1900
Asellidae Rafinesque, 1815
Asteropseidae Hotchkiss & Clark, 1976
Athorybiidae Huxley, 1859
Aulocalycidae Ijima, 1927
Axinellidae Carter, 1875
Benthopectinidae Verrill, 1899
Bertiliellidae Rieger & Sterrer, 1975
Boreohydridae Westblad, 1947
Botrucnidiferidae Carlgren, 1912
Bubaridae Topsent, 1894
Buproridae Thorell, 1859
Bythotiaridae Maas, 1905
Cabiropidae Giard & Bonnier, 1887
Callyspongiidae de Laubenfels, 1936
Calthropellidae Lendenfeld, 1907
Candelabridae Stechow, 1921
Capitellidae Grube, 1862
Opheliida
Orbiniida
Phyllodocida Dales, 1962
Psammodrilida
Pyrosomatida Jones, 1848
Sabellida
Salpida Forbes, 1853
Spintherida
Spionida sensu Rouse & Fauchald, 1997
Terebellida sensu Rouse & Fauchald, 1997
Chaetasteridae Sladen, 1889
Chaetopteridae Audouin & Milne Edwards, 1833
Chitonophilidae Avdeev & Sirenko, 1991
Chrysopetalidae Ehlers, 1864
Cicerinidae Meixner, 1928
Cirratulidae Carus, 1863
Cladorhizidae Dendy, 1922
Clausophyidae Totton, 1965
Cordylophoridae von Lendenfeld, 1885
Corymorphidae Allman, 1872
Corynidae Johnston, 1836
Cossuridae Day, 1963
Crambeidae Lévi, 1963
Crinoniscidae Bonnier, 1900
Ctenodrilidae Kennel, 1882
Cuninidae Bigelow, 1913
Cymuloporidae Winston & Vieira, 2013
Dactylocalycidae Gray, 1867
Dajidae Giard & Bonnier, 1887
Dendrotiidae
Dendyidae De Laubenfels, 1936
Desmacididae Schmidt, 1870
Desmoxyidae Hallmann, 1917
Septocrinidae Mironov, 2000
Serpulidae Rafinesque, 1815
Siboglinidae Caullery, 1914
Sigalionidae Malmgren, 1867
Sphaerodoridae Malmgren, 1867
Sphaeronectidae Huxley, 1859
Amphidiscophora Schulze, 1886
Copepoda incertae sedis
Tubulariida
Acanthaspidiidae Menzies, 1962
Acaulidae Fraser, 1924
Acoetidae Kinberg, 1856
Acrocirridae Banse, 1969
Acrumenidae Karling, 1980
Agalmidae
Agelasidae Verrill, 1907
Akanthophoreidae Sieg, 1986
Alciopidae Ehlers, 1864
Alectonidae Rosell, 1996
Ampharetidae Malmgren, 1866
Amphinomidae Savigny in Lamarck, 1818
Amphoriscidae Dendy, 1893
Antonbruunidae Fauchald, 1977
Aphrocallistidae Gray, 1867
Aphroditidae Malmgren, 1867
Apistobranchidae Mesnil & Caullery, 1898
Aplysinidae Carter, 1875
Nucellicolidae Lamb, Boxshall, Mill & Grahame, 1996
Oceaniidae Eschscholtz, 1829
Oenonidae Kinberg, 1865
Olindiasidae Haeckel, 1879
Olindiidae Haeckel, 1879
Oncaeidae Giesbrecht, 1893 ["1892"]
Onuphidae Kinberg, 1865
Opheliidae Malmgren, 1867
Orbiniidae Hartman, 1942
Orchistomatidae Bouillon, 1984
Oscarellidae Lendenfeld, 1887
Oweniidae Rioja, 1917
Paracorynidae Picard, 1957
Paralacydoniidae Pettibone, 1963
Paraonidae Cerruti, 1909
Paraphronimidae Bovallius, 1887
Parascelidae Bovallius, 1887
Caulophacidae Ijima, 1903
Pleurogoniidae Nordenstam, 1933
Plexechinidae Mooi & David, 1996
Podosphaerasteridae Fujita & Rowe, 2002
Podospongiidae de Laubenfels, 1936
Poecilochaetidae Hannerz, 1956
Polygordiidae Czerniavsky, 1881
Polynoidae Malmgren, 1867
Polyorchidae Agassiz, 1862
Pontodoridae Bergström, 1914
Porcellanasteridae Sladen, 1883
Prayidae Kölliker, 1853
Protiaridae Haeckel, 1879
Protodrilidae Czerniavsky, 1881
Protodrilidae Hatschek, 1888
Protodriloididae Purschke & Jouin, 1988
Protohydridae Allman, 1888
Psammodrilidae Swedmark, 1952
Pseudomesidae Hansen, 1916
Pyrosomatidae Lahille, 1888
Pyrostephidae Moser, 1925
Questidae Hartman, 1966
Rathkeidae Russell, 1953
Rossellidae Schulze, 1885
Sabellariidae Johnston, 1865
Sabellidae Latreille, 1825
Saccocirridae Czerniavsky, 1881
Salpidae Lahille, 1888
Savignyellidae Levinsen, 1909
Scalibregmatidae Malmgren, 1867
Scopalinidae Morrow, Picton, Erpenbeck, Boury-Esnault, Maggs & Allcock, 2012
Namanereidinae
Nereidinae Blainville, 1818
Nereinae [auctt.]
Nicomachinae Arwidsson, 1906
Notophyllinae Pleijel, 1991
Notoproctinae
Kalyptorhynchia Graff, 1905
Mycalina Hajdu, van Soest & Hooper, 1994
Ctenodrilida
Fauveliopsida
Flabelligerida
Oweniida
Sternaspida
Halicreatidae Fewkes, 1886
Halocorynidae Picard, 1957
Halopterididae Millard, 1962
Hamacanthidae Gray, 1872
Hemioniscidae Bonnier, 1900
Hesionidae Grube, 1850
Heteropiidae Dendy, 1893
Heterospionidae Hartman, 1965
Heteroxyidae Dendy, 1905
Hippopodiidae Kölliker, 1853
Histriobdellidae Vaillant, 1890
Hutchinsoniellidae Sanders, 1955
Hydridae Dana, 1846
Hymerhabdiidae Morrow, Picton, Erpenbeck, Boury-Esnault, Maggs & Allcock, 2012
Hyocrinidae Carpenter, 1884
Ianthellidae Hyatt, 1875
Ichthyotomidae Eisig, 1906
Ionidae H. Milne Edwards, 1840
Iospilidae Bergström, 1914
Irciniidae Gray, 1867
Isodictyidae Dendy, 1924
Korethrasteridae Danielssen & Koren, 1884
Labidiasteridae Verrill, 1914
Lacydoniidae Bergström, 1914
Lelapiidae Dendy & Row, 1913
Leucascidae Dendy, 1893
Leucettidae de Laubenfels, 1936
Leucopsacidae Ijima, 1903
Abarenicola Wells, 1959
Abyla Quoy & Gaimard, 1827
Abylopsis Chun, 1888
Parergodrilidae Reisinger, 1925
Petrobionidae Borojevic, 1979
Pharodidae Illg, 1948
Phellodermidae van Soest & Hajdu, 2002
Pholoidae Kinberg, 1858
Phormosomatidae Mortensen, 1934
Phrynocrinidae AH Clark, 1907
Phyllodocidae Örsted, 1843
Pilargidae de Saint-Joseph, 1899
Pisionidae Southern, 1914
Corbitellinae Gray, 1872
Cryptocopoidinae McLelland, 2008 M.S.
Cyamoninae Hooper, 2002
Cyclosalpinae Yount, 1954
Diplocrininae Roux, 1981
Echinodictyinae Hooper, 2002
Endeinae Norman, 1908
Eteoninae Bergström, 1914
Euclymeninae Arwidsson, 1906
Euplectellinae Gray, 1867
Eurycopinae Hansen, 1916
Eurysyllinae Hartman, 1965
Eusyllinae Malaquin, 1893
Exogoninae Langerhans, 1879
Gymnonereidinae Banse, 1977
Hemiarthrinae Markham, 1972
Hesioninae Grube, 1850
Hexapathinae Opresko, 2003
Hyalinoeciinae Paxton, 1986
Hygrosomatinae Smith & Wright, 1990
Ilyarachninae Hansen, 1916
Iospilinae Bergström, 1914
Keponinae Boyko, Moss, Williams & Shields, 2013
Lanuginellinae Schulze, 1897
Lepidastheniinae Pettibone, 1989
Lepidonotinae Willey, 1902
Lipomerinae Tattersall, 1905
Thaliacea Van der Haeven, 1850
Cryptoniscoidea Kossmann, 1880
Levidoridae Perkins, 1987
Lopadorrhynchidae Claparède, 1868
Lumbrineridae Schmarda, 1861
Lycaeopsidae Chevreux, 1913
Magapiidae Schuchert & Bouillon, 2009
Magelonidae Cunningham & Ramage, 1888
Maldanidae Malmgren, 1867
Margelopsidae Uchida, 1927
Merliidae Kirkpatrick, 1908
Metschnikowiidae Czerniawsky, 1880
Mirandotanaidae Blazewicz-Paszkowycz & Bamber, 2009
Moerisiidae Poche, 1914
Monobrachiidae Mereschkowsky, 1877
Mormonillidae Giesbrecht, 1893
Mycalidae Lundbeck, 1905
Myriothelidae Hincks, 1868
Myxasteridae Perrier, 1885
Myzostomidae Benham, 1896
Nannoniscidae Hansen, 1916
Nephtyidae Grube, 1850
Nereididae Blainville, 1818
Nerillidae Levinsen, 1883
Niphatidae van Soest, 1980
Albatrossaster Ludwig, 1907
Albatrossia Ludwig, 1907
Alciopa Audouin & Milne Edwards, 1833
Alciopina Clarapède & Panceri, 1867
Alcyonium sensu Pallas, 1766
Alebion Gray, 1867
Alectona Carter, 1879
Alentia Malmgren, 1866
Alentiana Hartman, 1942
Alitta Kinberg, 1865
Alkmaria Horst, 1919
Allasterias Verrill, 1909
Spintheridae Johnston, 1865
Spionidae Grube, 1850
Spongiidae Gray, 1867
Stelligeridae Lendenfeld, 1898
Sternaspidae Carus, 1863
Sycettidae Dendy, 1893
Syllidae Grube, 1850
Syntheciidae Marktanner-Turneretscher, 1890
Tanaellidae Larsen & Wilson, 2002
Tetraplatidae Collins, Bentlage, Lindner, Lindsay, Haddock, Jarms, Norenburg, Jankowski & Cartwright, 2008
Thorectidae Bergquist, 1978
Thrombidae Sollas, 1888
Timeidae Topsent, 1928
Tomopteridae Grube, 1850
Trachycladidae Hallmann, 1917
Tretodictyidae Schulze, 1886
Trichobranchidae Malmgren, 1866
Trochochaetidae Pettibone, 1963
Acanthocopinae Wolff, 1962
Acanthopathinae Opresko, 2004
Ampharetinae
Aphanipathinae Opresko, 2004
Autolytinae Langerhans, 1879
Bathyopsurinae Wolff, 1962
Bopyrinae Rafinesque, 1815
Bucephalinae Poche, 1907
Calamyzinae Hartmann-Schröder, 1971
Calthropellinae von Lendenfeld, 1907
Anisotylacanthea Vacelet, 1969
Anisoxya Topsent, 1898
Anobothrus Levinsen, [1884]
Anodiscus Perrier, 1869
Anoplonereis Giard, 1882
Anoplosyllis Claparède, 1868
Anoxycalyx Kirkpatrick, 1907
Anseropoda Nardo, 1834
Antarctothoa Moyano, 1987
Doliolidina Godeaux, 1996
Doliopsidina Godeaux, 1996
Dictyodendrillidae Bergquist, 1980
Dictyonellidae van Soest, Diaz & Pomponi, 1990
Dinophilidae
Diphyidae Quoy & Gaimard, 1827
Dipleurosomatidae Russell, 1953
Dirivultidae Humes & Dojiri, 1980
Diurodrilidae Kristensen & Niilonen, 1982
Doliolidae Bronn, 1862
Doliopsidae Godeaux, 1996
Dorvilleidae Chamberlin, 1919
Erennidae Pugh, 2001
Esperiopsidae Hentschel, 1923
Eucodoniidae Schuchert, 1996
Eudendriidae L. Agassiz, 1862
Eulepethidae Chamberlin, 1919
Eunicidae Berthold, 1827
Euphrosinidae Williams, 1851
Euphysidae Haeckel, 1879
Euplectellidae Gray, 1867
Fabriciidae Rioja, 1923
Fauveliopsidae Hartman, 1971
Flabelligeridae de Saint-Joseph, 1894
Freyellidae Downey, 1986
Glyceridae Grube, 1850
Goniadidae Kinberg, 1866
Typhloscolecidae Uljanin, 1878
Urechinidae Duncan, 1889
Travesiinae
Trichobranchinae
Amphidurini Pleijel, Rouse, Sundkvist & Nygren, 2012
Artacamini
Autolytini Langerhans, 1879
Circeini
Gyptini
Hesionini Grube, 1850
Leiochonini Arwidsson, 1906
Abyssoninoe Orensanz, 1990
Acanthancora Topsent, 1927
Acantheurypon Topsent, 1927
Acanthicolepis McIntosh, 1900
Aceste Thomson, 1877
Acestina Lambert & Thiéry, 1925
Acetabulastoma Schornikov, 1970
Acheliderma Topsent, 1892
Acholoe Claparède, 1870
Achramorpha Jenkin, 1908
Acoetes Audouin & Milne Edwards, 1832
Acrobelione Bourdon, 1981
Acrocirrus Grube, 1873
Acrumena Brunet, 1965
Actigia Stechow, 1921
Adercodon Mackie, 1994
Adocia Gray, 1867
Adreus Gray, 1867
Adyte Saint-Joseph, 1899
Aedicira Hartman, 1957
Aerope Thomson, 1877
Aeropsis Mortensen, 1907
Aglaophamus Kinberg, 1865
Aglaophenopsis Fewkes, 1881
Aglaura Péron & Lesueur, 1810
Aka de Laubenfels, 1936
Branchiocerianthus Mark, 1898
Branchiomaldane Langerhans, 1881
Branchiomma Kölliker, 1858
Branchiosyllis Ehlers, 1887
Brania Quatrefages, 1866
Breitfussia Borojevic, Boury-Esnault & Vacelet, 2000
Brementia Chatton & Brément, 1915
Brevicirrosyllis San Martín, López & Aguado, 2009
Brisinga Asbjørnsen, 1856
Brisingella Fisher, 1917
Brooksia Metcalf, 1918
Bubaris Gray, 1867
Allmaniella McIntosh, 1885
Allopatiria Verrill, 1913
Alloscleria Topsent, 1927
Amaeana Hartman, 1959
Amage Malmgren, 1866
Amagopsis Pergament & Khlebovich, 1964
Amalthaea Schmidt, 1852
Amblyosillis [auct.]
Amblyosyllis Grube, 1857
Ammotrypane Rathke, 1843
Ammotrypanella McIntosh, 1878
Amorphina Schmidt, 1870
Amorphinopsis Carter, 1887
Ampharete Malmgren, 1866
Amphicaryon Chun, 1888
Amphicorina Claparède, 1864
Amphicteis Grube, 1850
Amphictene Savigny, 1818
Amphiduros Hartman, 1959
Amphiglena Claparède, 1864
Amphimedon Duchassaing & Michelotti, 1864
Amphinome Bruguière, 1789
Amphiro Kinberg, 1864
Amphithyrus Claus, 1879
Amphitrite O.F. Müller, 1771
Amphitritides Augener, 1922
Amphiute Hanitsch, 1894
Amphoriscus Haeckel, 1870
Amuletta Wilson & Thistle, 1985
Amythasides Eliason, 1955
Anaitides Czerniavsky, 1882
Anchinia Rathke, 1835
Anchinoe Gray, 1867
Anchistrotos Brian, 1906
Anchylomera Milne Edwards, 1830
Ancistargis Jones, 1961
Ancistrosyllis McIntosh, 1879
Ancorina Schmidt, 1862
Lopadorhynchinae
Lugiinae Bergström, 1914
Lumbriclymeninae Arwidsson, 1906
Macellicephalinae Hartmann-Schröder, 1971
Maldaninae Arwidsson, 1906
Melinninae
Microphthalminae Hartmann-Schröder, 1971
Munnopsinae Lilljeborg, 1864
Armandia Filippi, 1861
Artacama Malmgren, 1866
Asabellides Annenkova, 1929
Asbestopluma Topsent, 1901
Ascaltis Haeckel, 1872
Ascandra Haeckel, 1872
Ascidonia Fransen, 2002
Asclerocheilus Ashworth, 1901
Asconiscus G.O. Sars, 1899
Asetocalamyzas Tzetlin, 1985
Aspidarachna Sars, 1899
Aspidodiadema A. Agassiz, 1878
Aspidonotus Sars, 1897
Asteracanthion Müller & Troschel, 1840
Asteracanthium Brandt, 1851
Asterina Nardo, 1834
Asterinides Verrill, 1913
Asteriscus Müller & Troschel, 1842
Asterodon Perrier, 1891
Asteropsis Müller & Troschel, 1840
Asthenosoma Grube, 1868
Astrella Perrier, in Milne-Edwards, 1882
Astrella Sollas, 1886
Astrocles Fisher, 1917
Astrogonium Müller & Troschel, 1842
Astroides Quoy & Gaimard, 1827
Astylinifer Topsent, 1927
Asychis Kinberg, 1867
Asymmetrione Codreanu, Codreanu & Pike, 1965
Antennella Allman, 1877
Antho Gray, 1867
Antinoe Kinberg, 1856
Antinoella Augener, 1928
Antonbruunia Hartman & Boss, 1966
Aonides Claparède, 1864
Aphanipathes Brook, 1889
Apharyngtus Westheide, 1971
Aphelochaeta Blake, 1991
Aphrocallistes Gray, 1858
Aphroceras Gray, 1858
Aphrodita Linnaeus, 1758
Aphroditaster Sladen, 1889
Aphrogenia Kinberg, 1856
Aphropharynx Wilfert, 1974
Apistobranchus Levinsen, 1883
Aplysinopsis Lendenfeld, 1888
Apohyale Bousfield & Hendrycks, 2002
Apolemia Eschscholtz, 1829
Apomatus Philippi, 1844
Aponuphis Kucheruk, 1978
Apoprionospio Foster, 1969
Aquilaspio Foster, 1971
Aquilonastra O'Loughlin in O'Loughlin & Waters, 2004
Aquiloniella Vieira, Spencer Jones, Winston, Migotto, & Marques, 2014
Arabella Grube, 1850
Arachnoidea Moore, 1903
Archaster Müller & Troschel, 1840
Archeterokrohnia Casanova, 1986
Archidice
Arctapodema Dall, 1907
Arenicola Lamarck, 1801
Arenicolides Mesnil, 1898
Arenotrocha Westheide & von Nordheim, 1985
Arichlidon Watson Russell, 1998
Aricia Savigny, 1822
Aricidea Webster, 1879
Onuphinae
Opheliinae
Ophelininae
Ophiodrominae Pleijel, 1998
Ophlitaspongiinae de Laubenfels, 1936
Phyllodocinae Örsted, 1843
Pilarginae de Saint-Joseph, 1899
Plocamioninae subfam. nov. (Hooper)
Polycirrinae Malmgren, 1867
Polynoinae Kinberg, 1856
Porphyrocrininae AM Clark, 1973
Prosorhynchinae Nicoll, 1914
Pseudioninae
Pyrosomatinae Lahille, 1888
Pyrostremmatinae van Soest, 1979
Rhodininae Arwidsson, 1906
Rossellinae Schulze, 1885
Sabellinae Chamberlin, 1919
Salpinae Lahille, 1888
Sanidasterinae Sollas, 1888
Sperosomatinae Smith & Wright, 1990
Stellettinae Carter, 1875
Storthyngurinae Kussakin, 2003
Syllidae incertae sedis
Syllinae Rioja, 1925
Synelminae Salazar-Vallejo, 1987
Syneurycopinae Wolff, 1962
Terebellinae Malmgren, 1867
Thorectinae Bergquist, 1978
Thrinacophorinae Hooper, 2002
Carna Gistel, 1848
Carobia Quatrefages, 1866
Castalia Savigny, 1822
Caulaster Perrier, 1882
Caulleriella Chamberlin, 1919
Ceratocephale Malmgren, 1867
Ceratocymba Chun, 1888
Ceratonereis Kinberg, 1865
Ophiodromini
Pileolariini
Procerini Nygren, 2004
Psamathini
Romanchellini P. Knight-Jones, 1978
Terebellini
Thelepini
Bargmannia Totton, 1954
Bathybiaster Danielssen & Koren, 1883
Bathydorus Schulze, 1886
Bathyeliasona Pettibone, 1976
Bathyfauvelia Pettibone, 1976
Bathynoe Ditlevsen, 1917
Bathyopsurus Nordenstam, 1955
Bathyphysa Studer, 1878
Bathyvermilia Zibrowius, 1973
Belonectes Wilson & Hessler, 1981
Benthopecten Verrill, 1884
Bertiliella Rieger & Sterrer, 1975
Bhawania Schmarda, 1861
Biemma Bowerbank, 1882
Biemna Gray, 1867
Bimeria Wright, 1859
Bipalponephtys Ravara, Wiklund, Cunha & Pleijel, 2010
Bispira Krøyer, 1856
Blackfordia Mayer, 1910
Boccardia Carazzi, 1893
Boccardiella Blake & Kudenov, 1978
Bonneviella Broch, 1909
Bopyrina Kossmann, 1881
Bopyrissa Nierstrasz & Brender à Brandis, 1931
Bopyroides Stimpson, 1864
Bopyrus Latreille, 1802
Botrucnidifer Carlgren, 1912
Bouillonactinia Miglietta, McNally & Cunningham, 2010
Bouillonia Petersen, 1990
Brada Stimpson, 1854
Cordagalma Totton, 1932
Bubaropsis Lévi & Vacelet, 1958
Bucardium J.E. Gray, 1853
Buprorus Thorell, 1859
Bushiella Knight-Jones, 1973
Bylgides Chamberlin, 1919
Bythotiara Günther, 1903
Cacochalina Schmidt, 1868
Cacospongia Schmidt, 1862
Calamorhynchus Streets, 1878
Calamyzas Arwidsson, 1932
Calizonella
Calliaxina Ngoc-Ho, 2003
Callyspongia Duchassaing & Michelotti, 1864
Calthropella Sollas, 1888
Calveria Thomson, 1872
Calveriosoma Mortensen, 1934
Calycaster Perrier, 1891
Calymne Thomson, 1877
Calyx Vosmaer, 1885
Caminella Lendenfeld, 1894
Caminus Schmidt, 1862
Campanopsis Claus, 1881
Campomma Stechow, 1921
Cancricepon Giard & Bonnier, 1887
Candelabrum de Blainville, 1830
Cantabrina Ferrer-Hernandez, 1914
Capitella Blainville, 1828
Capitellethus Chamberlin, 1919
Capitellides Mesnil, 1897
Capitomastus Eisig, 1887
Cystonereis Kölliker, 1846
Cytaeis Eschscholtz, 1829
Dactylia Carter, 1885
Dalhousiella McIntosh, 1901
Damiria Keller, 1891
Danalia Giard, 1887
Darwinella Müller, 1865
Dasybranchus Grube, 1850
Ancyroniscus Caullery & Mesnil, 1919
Angelopsis Fewkes, 1886
Anisarthrus Giard, 1907
Anisocrella Topsent, 1927
Dimophyes Moser, 1925
Dinophilus Schmidt, 1848
Diopatra Audouin & Milne Edwards, 1833
Dioplosyllis Gidholm, 1962
Diphyes Cuvier, 1817
Diplocirrus Haase, 1915
Diplocrinus Döderlein, 1912
Diplophryxus Richardson, 1904
Diplopteraster Verrill, 1880
Dipolydora Verrill, 1881
Dipurena McCrady, 1859
Disconectes Wilson & Hessler, 1981
Discorhabdella Dendy, 1924
Dispio Hartman, 1951
Distolasterias Perrier, 1896
Diurodrilus Remane, 1925
Doconesthes Topsent, 1928
Dodecaceria Örsted, 1843
Dolioletta sensu Garstang, 1933
Doliolina Borgert, 1894
Doliopsis Vogt, 1854
Doloria Skogsberg, 1920
Dorigona Perrier, 1885, non Gray, 1866
Dorocidaris A. Agassiz, 1869
Dorvillea Parfitt, 1866
Dorypleres Sollas, 1888
Dotona Carter, 1880
Drachmaster Downey, 1970
Dragmastra Sollas, 1888
Dragmatella Hallmann, 1917
Drieschia
Drilonereis Claparède, 1870
Dunstervillia Bowerbank, 1845
Dysponetus Levinsen, 1879
Chone Krøyer, 1856
Chonelasma Schulze, 1886
Chrysopetalum Ehlers, 1864
Chunaster Ludwig, 1907
Chuniphyes Lens & van Riemsdijk, 1908
Cidaris Leske, 1778
Cinachyrella Wilson, 1925
Ciocalapata de Laubenfels, 1936
Ciocalypta Bowerbank, 1862
Circeis Saint-Joseph, 1894
Cirratulus Lamarck, 1801
Cirrhineris Blainville, 1828
Cirriformia Hartman, 1936
Cirrineris [auctt.]
Cirrophorus Ehlers, 1908
Cistenides Malmgren, 1866
Cladocoryne Rotch, 1871
Cladocroce Topsent, 1892
Cladonema Dujardin, 1843
Cladorhiza Sars, 1872
Clathria Schmidt, 1862
Clausophyes Lens & van Riemsdijk, 1908
Clava Gmelin, 1788
Clavodorum
Clavopsella Stechow, 1919
Cliona Grant, 1826
Cliothosa Topsent, 1905
Clymene Savigny in Lamarck, 1818
Clymenella Verrill, 1873
Clymenopsis Verrill, 1900
Clymenura Verrill, 1900
Clypeoniscus Giard & Bonnier, 1895
Clytia Lamouroux, 1812
Cnidoscyphus Splettstoesser, 1929
Codonium Haeckel, 1879
Coenosmilia Pourtalès, 1874
Collospongelia Ferrer Hernández, 1923
Colpaster Sladen, 1889
Deflexilodes Bousfield & Chevrier, 1996
Delectona de Laubenfels, 1936
Demonax Kinberg, 1867
Dendoricella Lundbeck, 1905
Dendoryx Gray, 1867
Dendrectilla Pulitzer-Finali, 1983
Dendrilla Lendenfeld, 1883
Dendroxea Griessinger, 1971
Dercitancorina Topsent, 1902
Dercitus Gray, 1867
Dermatodiadema A. Agassiz, 1898
Desdemona Banse, 1957
Deshayesorchestia Ruffo, 2004
Desmacella Schmidt, 1870
Desmacidon Bowerbank, 1861
Desmacodes Schmidt, 1870
Desmosomella Kussakin, 1965
Desmosyllis Verrill, 1900
Dexiospira Caullery & Mesnil, 1897
Diactinolopha Sarà, 1960
Diadema Gray, 1825
Dialychone Claparède, 1870
Dicodonium Haeckel, 1879
Dictyonella Schmidt, 1868
Ectopleura L. Agassiz, 1862
Ehlersia Quatrefages, 1865
Ehlersiella McIntosh, 1885
Einhornia Nikulina, 2007
Elatopathes Opresko, 2004
Elicodasia Laubier & Ramos, 1973
Enapteris Rosa, 1908
Endectyon Topsent, 1920
Endoxocrinus AH Clark, 1908
Enipo Malmgren, 1866
Enneagonum Quoy & Gaimard, 1827
Enoplopatiria Verrill, 1913
Eoleptasterias Djakonov, 1938
Eophrixus Caroli, 1930
Atergia Stephens, 1915
Athelges Gerstaecker, 1862
Athelgue Hesse, 1861
Atherospio Mackie & Duff, 1986
Athorybia Eschscholtz, 1829
Atlantisella Tabachnick, 2002
Auchenoplax Ehlers, 1887
Augeneria Monro, 1930
Augeneriella Banse, 1957
Auletta Schmidt, 1870
Auloplax Schulze, 1904
Aurospio Maciolek, 1981
Austrolaenilla Bergström, 1916
Autolytus Grube, 1850
Autosyllis Imajima & Hartman, 1964
Axinella Schmidt, 1862
Axingella Topsent, 1928
Axinyssa Lendenfeld, 1897
Axionice Malmgren, 1866
Axiothella Verrill, 1900
Baeonectes Wilson, 1982
Baffinia Wesenberg-Lund, 1950
Baffinicythere Hazel, 1967
Baldia Garwood & Bamber, 1988
Euphrosine Lamarck, 1818
Euphrosyne [auct.]
Euphysa Forbes, 1848
Euphysora Maas, 1905
Eupista McIntosh, 1885
Eupistella Chamberlin, 1919
Euplectella Owen, 1841
Eupolymnia Verrill, 1900
Eupolyodontes Buchanan, 1894
Eupronoe Claus, 1879
Euratella Chamberlin, 1919
Eurete Semper, 1868
Euritmia Sarda-Borroy, 1987
Eurysyllis Ehlers, 1864
Eurythoe Kinberg, 1857
Dytaster Sladen, 1889
Earleria Collins, Ross, Genzano & Manzian, 2006
Ebnerella Lendenfeld, 1891
Echinaster Müller & Troschel, 1840
Echinodictyum Ridley, 1881
Echinosigra Mortensen, 1907
Echinosoma Pomel, 1883
Echinostylinos Topsent, 1927
Echinozone G.O. Sars, 1897
Ecionemia Bowerbank, 1862
Eclysippe Eliason, 1955
Ecrobia Stimpson, 1865
Gattiola Johnston, 1865
Gattyana McIntosh, 1897
Gelliodes Ridley, 1884
Gellius Gray, 1867
Geminosyllis Imajima, 1966
Genetyllis Malmgren, 1865
Gesaia Kirtley, 1994
Gilia Pugh & Pages, 1995
Glabraster A.H. Clark, 1916
Glossocephalus Bovallius, 1887
Glycera Savigny, 1818
Glycerella Arwidsson, 1899
Glycinde Müller, 1858
Glyphanostomum Levinsen, 1884
Glyphohesione Friedrich, 1950
Glyptaster Sladen, 1885 in Thomson & Murray, 1885
Gnathaster Sladen, 1889
Gnathodon Verrill, 1899
Gnathosyllis Schmarda, 1861
Gomphostegia Topsent, 1896
Goniada Audouin & Milne-Edwards, 1833
Goniadella Hartman, 1950
Goniaster L. Agassiz, 1836
Goniodiscus Müller & Troschel, 1842
Goniopecten Perrier, 1881
Cometella Schmidt, 1870
Composetia Hartmann-Schröder, 1985
Concentrotheca Cairns, 1979
Conchocheres Sars G.O., 1918
Heteropyramis Moser, 1925
Heterospio Ehlers, 1874
Heterosyllis Claparède, 1863
Heteroxya Topsent, 1898
Hexactinella Carter, 1885
Hexadella Topsent, 1896
Hexaster Perrier, 1891
Higginsia Higgin, 1877
Hipponoa Audouin & Milne Edwards, 1833
Hipponoe Audouin & Milne-Edwards, 1830
Hippopodius Quoy & Gaimard, 1827
Hippospongia Schulze, 1879
Hircinia Nardo, 1834
Histodermella Lundbeck, 1910
Histriobdella Van Beneden, 1858
Holoxea Topsent, 1892
Holtenia Schmidt, 1870
Homoderma Lendenfeld, 1885
Homoeodictya Ehlers, 1870
Hoplangia Gosse, 1860
Hoplaster Perrier, in Milne-Edwards, 1882
Hyalinoecia Malmgren, 1867
Hyalonema Gray, 1832
Hyalopomatopsis de Saint-Joseph, 1894
Hyalopomatus Marenzeller, 1878
Hyattella Lendenfeld, 1888
Hydra Linnaeus, 1758
Hydractomma Stechow, 1921
Hydrasterias Sladen, 1889
Hydroides Gunnerus, 1768
Hygrosoma Mortensen, 1903b
Hymantho Burton, 1930
Hymedesmia Bowerbank, 1864
Hymenancora Lundbeck, 1910
Cerbaris Topsent, 1898
Chaetaster Müller & Troschel, 1840
Chaetoparia Malmgren, 1867
Chaetopterus Cuvier, 1830
Chaetosyllis Malmgren, 1867
Chaetozone Malmgren, 1867
Chalinula Schmidt, 1868
Characella Sollas, 1886
Chaunorhynchus Chamberlin, 1919
Cheilaster Bell, 1893
Chelophyes Totton, 1932
Chirimia Light, 1991
Chitinopoma Levinsen, 1884
Chloeia Lamarck, 1818
Chloenopsis Fauchald, 1977
Chondraster Verrill, 1895
Chondrilla Schmidt, 1862
Chondrocladia Thomson, 1873
Haliclona Grant, 1836
Halicnemia Bowerbank, 1864
Halicometes Topsent, 1898
Halicortex Sarà, 1958
Haliris Dall, 1886
Halisarca Johnston, 1842
Halistella Sarà, 1958
Halistemma Huxley, 1859
Halitholus Hartlaub, 1914
Halla
Halocoryne Hadzi, 1917
Halosydna Kinberg, 1856
Hamigera Gray, 1867
Haploscoloplos Monro, 1933
Haplostomella Chatton & Harant, 1924
Haplosyllis Langerhans, 1879
Harmothoe Kinberg, 1856
Hauchiella Levinsen, 1893
Hediste Malmgren, 1867
Helicosalpa Todaro, 1902
Hemiarthrus Giard & Bonnier, 1887
Ephesiella Chamberlin, 1919
Epidiopatra Augener, 1918
Epidontaster Koehler, 1920
Epigamia Nygren, 2004
Epipenaeon Nobili, 1906
Epiphrixus Nierstraz & Brender à Brandis, 1932
Epipolasis de Laubenfels, 1936
Eranno Kinberg, 1864
Erenna Bedot, 1904
Ergyne Risso, 1816
Erinaceusyllis San Martín, 2005
Erseia Nygren, Sundkvist, Mikac & Pleijel, 2010
Erylus Gray, 1867
Eteone Savigny, 1818
Euarche Ehlers, 1887
Euchelipluma Topsent, 1909
Euchone Malmgren, 1866
Euclymene Verrill, 1900
Eucodonium Hartlaub, 1907
Eucranta Malmgren, 1866
Eudoxia Eschscholtz, 1825
Eudoxoides Huxley, 1859
Eugerdella Kussakin, 1965
Eugoniaster Verrill, 1899
Eugotoea Margulis, 1989
Eulalia Savigny, 1818
Eumastia Schmidt, 1870
Eumedusa Bigelow, 1920
Eumenia Örsted, 1843
Eumida Malmgren, 1865
Eunapius Gray, 1867
Eunereis Malmgren, 1865
Eunice Cuvier, 1817
Euniphysa Wesenberg-Lund, 1949
Eunoe Malmgren, 1866
Eupanthalis McIntosh, 1876
Ione Latreille, 1818
Iophonopsis Dendy, 1924
Iotrochota Ridley, 1884
Gorbunovia Annenkova, 1952
Gorgoniapolynoe Pettibone, 1991
Gossia Quatrefages, 1866
Gracilimesus Kavanagh & Wilson, 2007
Grammaria Stimpson, 1853
Grantessa Lendenfeld, 1885
Grantia Fleming, 1828
Grapsicepon Giard & Bonnier, 1887
Grayella Carter, 1869
Grubea Quatrefages, 1865
Grubeosyllis Verrill, 1900
Grubeulepis Pettibone, 1969
Grubianella McIntosh, 1885
Guancha Miklucho-Maclay, 1868
Gyge Cornalia & Panceri, 1861
Gymnognathaster Döderlein, 1928
Gymnorete Ijima, 1927
Gyptis Marion & Bobretzky in Marion, 1874
Habrocidaris A. Agassiz & H.L. Clark, 1907
Hacelia Gray, 1840
Haematocleptes Wirén, 1886
Halanthus Hadži, 1914
Haleciella Hadži, 1914
Laphania Malmgren, 1866
Lasiaster Sladen, 1889
Lasis
Laubieriellus Maciolek, 1981
Laubieriopsis Petersen, 2000
Laubierpholoe Pettibone, 1992
Leaena Malmgren, 1866
Leanira Kinberg, 1856
Leiocapitella Hartman, 1947
Leiochone Grube, 1868
Leiochrides Augener, 1914
Leitoscoloplos Day, 1977
Lembulus Risso, 1826
Lemintina Risso, 1826
Lensia Totton, 1932
Euspongia Bronn, 1859
Eusyllis Malmgren, 1867
Eutelichthys Tortonese, 1959
Euthalenessa Darboux, 1900
Euthelepus McIntosh, 1885
Euzonus Grube, 1866
Evoplosoma Fisher, 1906
Exogone Örsted, 1845
Fabienna Schuchert, 1996
Fabricia Blainville, 1828
Fabriciola Friedrich, 1939
Farrea Bowerbank, 1862
Fauvelia Gravier, 1900
Fauvelicirratulus Çinar & Petersen, 2011
Fauveliopsis Mc Intosh, 1922
Ficopomatus Southern, 1921
Fieldingia Kent, 1870
Filibranchus
Filitanais Kudinova-Pasternak, 1973
Filograna Berkeley, 1835
Filogranula Langerhans, 1884
Fimbriosthenelais Pettibone, 1971
Flabelligella Hartman, 1965
Flabelligera Sars, 1829
Florianella Rieger & Sterrer, 1975
Folliculovarium Gu & Shen, 1983
Forskalia Kölliker, 1853
Freyastera Downey, 1986
Freyella Perrier, 1885
Freyellidea Fisher, 1917
Frillagalma Daniel, 1966
Fromia Gray, 1840
Galathowenia Kirkegaard, 1959
Galetta Stechow, 1921
Ganganereis Misra, 1999
Gastraster Perrier, 1894
Myxicola Koch in Renier, 1847
Myzostoma Leuckart, 1829
Hymenaster Thomson, 1873
Hymeniacidon Bowerbank, 1858
Hymenodiscus Perrier, 1884
Hymerhabdia Topsent, 1892
Hymetrochota Topsent, 1904
Hymoxenia Alander, 1937
Hypania Ostrooumouff, 1896
Hypaniola Annenkova, 1927
Hypereteone Bergström, 1914
Hyperietta Bowman, 1973
Hyperionyx Bowman, 1973
Hyphalaster Sladen, 1883
Hypsicomus Grube, 1870
Hypsiechinus Mortensen, 1903
Hyrtios Duchassaing & Michelotti, 1864
Iasis Savigny, 1816
Icasterias Fisher, 1923
Ichthyocodium Jungersen, 1913
Ichthyotomus Eisig, 1906
Ihlea Metcalf, 1919
Ilyarachna Sars, 1870
Ilyaster Danielssen & Koren, 1882
Ilyphagus Chamberlin, 1919
Inermonephtys Fauchald, 1968
Inermosyllis San Martín, 2003
Inflatella Schmidt, 1875
Ioida Johnston, 1840
Microloxoconcha Hartmann, 1954
Micromaldane Monro, 1939
Micronephthys Friedrich, 1939
Micronereis Claparède, 1863
Micronerilla
Microphthalmus Mecznikow, 1865
Microrbinia Hartman, 1965
Microspio Mesnil, 1896
Microsyllis Claparède, 1863
Milnesium
Mimaster Sladen, 1882
Hemiasterella Carter, 1879
Hemicnemis Müller & Troschel, 1840
Hemigellius Burton, 1932
Hemimycale Burton, 1934
Hemioniscus Buchholz, 1866
Hemipodia Kinberg, 1865
Hemipodus Quatrefages, 1866
Hemityphis Claus, 1879
Herceus Koltun, 1959
Hermodice Kinberg, 1857
Hermonia Hartman, 1959
Hertwigia Schmidt, 1880
Hesione Savigny in Lamarck, 1818
Hesionides Friedrich, 1937
Hesionura Hartmann-Schröder, 1958
Hesiospina Imajima & Hartman, 1964
Hesiosyllis Wesenberg Lund, 1950
Heteroclymene Arwidsson, 1906
Heteromastus Eisig, 1887
Heteromeyenia Potts, 1881
Heteronema Keller, 1889
Heteropale Johnson, 1897
Heteropia Carter, 1886
Heteropolynoe Bidenkap, 1907
Notaulax Tauber, 1879
Nothria Malmgren, 1866
Notocirrus Schmarda, 1861
Notomastus Sars, 1850
Notophyllum Örsted, 1843
Notoproctus Arwidsson, 1906
Notopygos Grube, 1850
Novafabricia Fitzhugh, 1990
Novodinia Dartnall, Pawson, Pope & B.J. Smith, 1969
Nubiella Bouillon, 1980
Nucellicola Lamb, Boxshall, Mill & Grahame, 1996
Nudisyllis Knox & Cameron, 1970
Oceanapia Norman, 1869
Linopherus Quatrefages, 1865
Lipobranchius Cunningham & Ramage, 1888
Lipomera Tattersall, 1905
Liriope Lesson, 1843
Liriopsis Schultze in Müller, 1859
Lissodendoryx Topsent, 1892
Lithoplocamia Dendy, 1922
Lithumena Renier, 1928
Litocorsa Pearson, 1970
Lizzia Forbes, 1846
Loimia Malmgren, 1865
Lonchotaster Sladen, 1889
Longibrachium Paxton, 1986
Lopadorhynchus Grube, 1855
Lopadorrhynchus Grube, 1850
Lophaster Verrill, 1878
Lophocalyx Schulze, 1887
Lophopteraster Verrill, 1895
Loxomitra Nielsen, 1964
Lugia Quatrefages, 1866
Luidiaster Studer, 1884
Lumbricalus Frame, 1992
Lumbriclymene Sars, 1872
Lumbricus auctorum [non Lumbricus Linnaeus, 1758]
Lumbrinerides Orensanz, 1973
Lumbrineriopsis Orensanz, 1973
Lumbrineris Blainville, 1828
Lycaeopsis Claus, 1879
Lycastis Savigny, 1822
Lychnagalma Haeckel, 1888
Lygdamis Kinberg, 1867
Lysianassina A. Costa, 1867
Lysibranchia Cantone, 1983
Lysidice Lamarck, 1818
Lysilla Malmgren, 1866
Lysippe Malmgren, 1866
Lysippides Hessle, 1917
Lytaster Perrier, 1894
Iphitime Marenzeller, 1902
Ircinia Nardo, 1833
Irmula Ehlers, 1913
Isarachnactis Carlgren, 1924
Isocirrus Arwidsson, 1906
Isodictya Bowerbank, 1864
Isolda Mueller, 1858
Isops Sollas, 1880
Isosyllis Ehlers, 1864
Iulopis Bovallius, 1887
Janirella Bonnier, 1896
Janua Saint-Joseph, 1894
Jasmineira Langerhans, 1880
Jaspis Gray, 1867
Johnstonia
Josephella Caullery & Mesnil, 1896
Joyeuxia Topsent, 1890
Jugaria Knight-Jones, 1978
Kantiella Bouillon, 1978
Kefersteinia Quatrefages, 1866
Kesun Chamberlin, 1919
Korethraster Wyville Thomson, 1873
Krohnia Quatrefages, 1866
Labratrema Maillard, 1975
Labrorostratus de Saint-Joseph, 1888
Lacydonia Marion & Bobretzky, 1875
Laeospira Caullery & Mesnil, 1897
Laetmonice Kinberg, 1856
Lafoeina Sars, 1869
Lagis Malmgren, 1866
Lagisca Malmgren, 1866
Lamellibrachia Webb, 1969
Laminospongia Pulitzer-Finali, 1983
Lanassa Malmgren, 1866
Langerhansia Czerniavsky, 1881
Lanice Malmgren, 1866
Lanuginella Schmidt, 1870
Laonice Malmgren, 1867
Minuspio Foster, 1971
Mirabilicoxa Hessler, 1970
Miscellania Martin, Alós & Sardá, 1990
Moerisia Boulenger, 1908
Moiraster Sladen, 1889
Monanchora Carter, 1883
Monocrepidium Topsent, 1898
Monothula Böttger-Schnack & Huys, 2001
Monticellina Laubier, 1961
Mormonilla Giesbrecht, 1891
Mugga Eliason, 1955
Munella Bonnier, 1896
Muraenicola Nolan & Cribb, 2010
Myceliospongia Vacelet & Perez, 1998
Myrianida Milne Edwards, 1845
Myriochele Malmgren, 1867
Myrmekioderma Ehlers, 1870
Mysta Malmgren, 1865
Mystides Théel, 1879
Myxaster Perrier, 1885
Paradexiospira Caullery & Mesnil, 1897
Paradialychone Tovar-Hernández, 2008
Paradiopatra Ehlers, 1887
Paradoneis Hartman, 1965
Paradyte Pettibone, 1969
Paraehlersia San Martín, 2003
Paraeuchaeta Scott A., 1909
Paraeuniphysa Wu & He, 1988
Paragigantione Barnard, 1920
Paragotoea Kramp, 1942
Parahyalinoecia
Paralacydonia Fauvel, 1913
Paralaeospira Caullery & Mesnil, 1897
Paraleiocapitella Thomassin, 1970
Paraleptognathia Kudinova-Pasternak, 1981
Paraleucilla Dendy, 1892
Paramphinome Sars, 1869
Myzostomum Leuckart, 1827
Naenia Gray, 1867
Naiades Chiaje, 1830
Nainereis [auctt.]
Naineris Blainville, 1828
Namalycastis Hartman, 1959
Namanereis Chamberlin, 1919
Nanaster Perrier, 1894
Narcissia Gray, 1840
Nardoa Schmidt, 1862
Neanthes Kinberg, 1865
Necallianassa Heard & Manning, 1998
Nectochaeta Marenzeller, 1892
Nectopyramis Bigelow, 1911
Negombata de Laubenfels, 1936
Nematocarpus Broch, 1918
Nematonereis Schmarda, 1861
Nemopsis L. Agassiz, 1849
Neoamphitrite Hessle, 1917
Neodexiospira Pillai, 1970
Neogyptis Pleijel, Rouse, Sundkvist & Nygren, 2012
Neolagisca Barnich & Fiege, 2000
Neolampas A. Agassiz, 1869
Neoleanira Pettibone, 1970
Neomorphaster Sladen, 1889
Neopetitia San Martín, 2003
Neopetrosia de Laubenfels, 1949
Neophrissospongia Pisera & Lévi, 2002
Neopodospongia Sim-Smith & Kelly, 2011
Neopolynoe Loshamn, 1981
Neopseudocapitella Rullier & Amoureux, 1979
Neosabellides Hessle, 1917
Neoturris Hartlaub, 1914
Neovermilia Day, 1961
Nepanthia Gray, 1840
Nephthys [auctt.]
Nephtys Cuvier, 1817
Nereimyra Blainville, 1828
Leocrates Kinberg, 1866
Leodice Savigny in Lamarck, 1818
Leodora Saint-Joseph, 1894
Leonnates Kinberg, 1865
Lepidasthenia Malmgren, 1867
Lepidonotus Leach, 1816
Leponiscus Giard, 1887
Leptasterias Verrill, 1866
Leptoclathria Topsent, 1928
Leptoecia Chamberlin, 1919
Leptonereis Kinberg, 1865
Leptoptychaster E. A. Smith, 1879
Leptosastra Topsent, 1904
Leptosia Topsent, 1892
Leptychaster E. A. Smith, 1876
Lesueuria Milne Edwards, 1841
Leucaltis Haeckel, 1872
Leucandra Haeckel, 1872
Leucetta Haeckel, 1872
Leucia Malmgren, 1867
Leucilla Haeckel, 1872
Leuckartiara Hartlaub, 1914
Leuclathrina Borojevic & Boury-Esnault, 1987
Leuconia Grant, 1833
Leucosolenia Bowerbank, 1864
Leuculmis Haeckel, 1872
Leviapseudes Sieg, 1983
Levidorum Hartman, 1967
Levinella Borojevic & Boury-Esnault, 1986
Levinsenia Mesnil, 1897
Licornia Van Beneden, 1850
Lightiella Jones, 1961
Lilyopsis Chun, 1885
Linckia Forbes, 1839
Linckia Nardo, 1834
Phyllochaetopterus Grube, 1863
Phyllodoce Lamarck, 1818
Phylo Kinberg, 1866
Marginaster Perrier, 1881
Mariansabellaria Kirtley, 1994
Marphysa Quatrefages, 1865
Marrus Totton, 1954
Marsipaster Sladen, 1882
Marthasterias Jullien, 1878
Marycarmenia Nunez, 1998
Mastobranchus Eisig, 1887
Maupasia Viguier, 1886
Medicorophium Bousfield & Hoover, 1997
Mediomastus Hartmann, 1944
Megalomma Johansson, 1926
Meganerilla Boaden, 1961
Melaenis Malmgren, 1866
Melinna Malmgren, 1866
Melinnampharete Annenkova, 1937
Melinnopsis McIntosh, 1885
Mellonympha Schulze, 1897
Melonanchora Carter, 1874
Melonchela Koltun, 1955
Melophysa Haeckel, 1888
Melythasides Desbruyères, 1978
Menanetia Topsent, 1896
Mercierella Fauvel, 1923
Merlia Kirkpatrick, 1908
Mesochaetopterus Potts, 1914
Mesonerilla Remane, 1949
Metavermilia Bush, 1905
Metschnikowia Grimm, 1876
Microclymene Arwidsson, 1906
Patiria Gray, 1840
Pectinaria Savigny, 1818
Pectinaster Perrier, 1885
Pedicellaster M. Sars, 1861
Pedinosoma
Pegea Savigny, 1816
Peisidice Johnson, 1897
Pelagobia Greeff, 1879
Physalia Lamarck, 1801
Physsophora Forsskål, 1775
Pilargis Saint-Joseph, 1899
Pileolaria Claparède, 1868
Pilochrota Sollas, 1886
Pione Gray, 1867
Pionosyllis Malmgren, 1867
Pirakia Bergström, 1914
Piromis Kinberg, 1867
Pisione Grube, 1857
Pista Malmgren, 1866
Pistella Hartmann-Schröder, 1996
Pityrete Topsent, 1928
Placinolopha Topsent, 1897
Placospongia Gray, 1867
Placotrochides Alcock, 1902
Plakosyllis Hartmann-Schröder, 1956
Platynereis Kinberg, 1865
Pleraplysilla Topsent, 1905
Plesiodiadema Pomel, 1883
Pleurocrypta Hesse, 1865
Pleurocryptella Bonnier, 1900
Plexechinus A. Agassiz, 1898
Plinthaster Verrill, 1899
Pliophrixus Caroli, 1930
Plocamia Schmidt, 1870
Plocamiancora Topsent, 1927
Plocamilla Topsent, 1928
Plocamione Topsent, 1927
Plocamionida Topsent, 1927
Plocamiopsis Topsent, 1904
Plotocnide Wagner, 1885
Plotohelmis Chamberlin, 1919
Plutonaster Sladen, 1889
Podarke Ehlers, 1864
Podarkeopsis Laubier, 1961
Podocoryna M. Sars, 1846
Podocorynoides Schuchert, 2007
Pellinula Czerniavsky, 1880
Pelogenia Schmarda, 1861
Peltaster Verrill, 1899
Penares Gray, 1867
Pennaria Goldfuss, 1820
Peresiella Harmelin, 1968
Periboea Ehlers, 1864
Pericharax Poléjaeff, 1883
Peridontaster Koehler, 1920
Perinereis Kinberg, 1865
Peripatagus Koehler, 1895
Periphragella Marshall, 1875
Perkinsiana Knight-Jones, 1983
Persa McCrady, 1859
Persephonaster Wood-Mason & Alcock, 1891
Petalaster Gray, 1840
Petaloproctus Quatrefages, 1866
Petitia Siewing, 1956
Petrobiona Vacelet & Lévi, 1958
Petrosia Vosmaer, 1885
Petta Malmgren, 1866
Pettiboneia Orensanz, 1973
Phakellia Bowerbank, 1862
Phakettia de Laubenfels, 1936
Phalacrophorus Greeff, 1879
Phalacrostemma Marenzeller, 1895
Phaneraster Perrier, 1894
Pharodes Wilson C.B., 1935
Pheronema Leidy, 1868
Pherusa Oken, 1807
Phialidium Leuckart, 1856
Phidiaster Koehler, 1909
Philonaster Koehler, 1909
Phisidia Saint-Joseph, 1894
Phloeodictyon Carter, 1882
Phlyctaenopora Topsent, 1904
Pholoe Johnston, 1839
Pholoides Pruvot, 1895
Laonome Malmgren, 1866
Ophlitaspongia Bowerbank, 1866
Ophryotrocha Claparède & Mecznikow, 1869
Opisthodonta Langerhans, 1879
Opisthosyllis Langerhans, 1879
Orbinia Quatrefages, 1865
Oriopsis Caullery & Mesnil, 1896
Orseis Ehlers, 1864
Orthasterias Verrill, 1914
Orthopyxis L. Agassiz, 1862
Ostroumovia Hadzi, 1928
Othomaera Krapp-Schickel, 2000
Otopsis Ditlevsen, 1917
Ougia Wolf, 1986
Owenia Delle Chiaje, 1844
Oxeostilon Ferrer-Hernandez, 1923
Oxydromus Grube, 1855
Pachastrella Schmidt, 1868
Pachastrissa Lendenfeld, 1903
Pachycerianthus Roule, 1904
Pachychalina Schmidt, 1868
Pachymatisma Bowerbank in Johnston, 1842
Paedampharete Russell, 1987
Paedophylax Claparède, 1868
Palaeotropus Lovén, 1874
Paleanotus Schmarda, 1861
Pallaseopsis Kamaltynov & Väinölä, 2002
Palmipes L. Agassiz, 1836
Palmyreuphrosyne Fauvel, 1913
Palola Gray in Stair, 1847
Palolo
Palposyllis Hartmann-Schröder, 1977
Panousea Rullier & Amoureux, 1970
Panthalis Kinberg, 1856
Paracapitella Kirkegaard, 1983
Paracoryne Picard, 1957
Polyphysia Quatrefages, 1866
Paramphitrite Holthe, 1976
Paranaitis Southern, 1914
Paranerilla Jouin & Swedmark, 1965
Paraninoe Levenstein, 1977
Paraonides Cerruti, 1909
Paraonis Cerruti, 1909
Paraphrixus Caroli, 1930
Paraphronima Claus, 1879
Parapionosyllis Fauvel, 1923
Parapodrilus Westheide, 1965
Paraprionospio Caullery, 1914
Paraprocerastea San Martín & Alós, 1989
Parapronoe Claus, 1879
Pararchaster Sladen, 1885
Parasabella Bush, 1905
Parascelus Claus, 1879
Paraserpula Southward, 1963
Parasphaerosyllis Monro, 1937
Paraspio Czerniavsky, 1881
Parasterias Verrill, 1914
Parasterina Fisher, 1908
Parathelges Bonnier, 1900
Paratimea Hallmann, 1917
Paratyphis Claus, 1879
Paratyposyllis Hartmann-Schröder, 1962
Paresperella Dendy, 1905
Paresperia Burton, 1930
Pareteone Hartmann-Schroder, 1975
Pareucalanus Geletin, 1976
Pareurythoe Gustafson, 1930
Parexogone Mesnil & Caullery, 1918
Parhyalinoecia Hartmann-Schroeder, 1975
Parhypania Annenkova, 1928
Parophryotrocha Hartmann-Schröder, 1971
Parougia Wolf, 1986
Pusillotrocha Westheide & von Nordheim, 1985
Pygospio Claparède, 1863
Octobranchus Marion & Bobretzky, 1875
Octogonade Zoja, 1895
Octomagelona Aguirrezabalaga, Ceberio & Fiege, 2001
Odinia Perrier, 1885
Odontosyllis Claparède, 1863
Oenone
Oligoceras Schulze, 1880
Oligognathus Spengel, 1881
Omphalopoma Mörch, 1863
Omphalopomopsis Saint-Joseph, 1894
Onuphis Audouin & Milne Edwards, 1833
Oophylax Ehlers, 1864
Oopsacas Topsent, 1927
Opercularella Hincks, 1868
Ophelia Savigny, 1822
Ophelina Örsted, 1843
Ophidiaster L. Agassiz, 1836
Ophiodromus Sars, 1862
Psamathe Johnston, 1836
Psammodriloides Swedmark, 1958
Psammodrilus Swedmark, 1952
Psammolyce Kinberg, 1856
Pseudaster Perrier, 1885
Pseudaxinella Schmidt, 1875
Pseudaxinyssa Burton, 1931
Pseudeulalia Eliason, 1962
Pseudeurythoe Fauvel, 1932
Pseudione Kossmann, 1881
Pseudobrania San Martín, 1984
Pseudocapitella Fauvel, 1913
Pseudoclymene Arwidsson, 1906
Pseudoclytia Mayer, 1900
Pseudofabricia Cantone, 1972
Pseudofabriciola Fitzhugh, 1990
Pseudogerda Kussakin, 1965
Pseudohalosydna
Pseudomalacoceros Czerniavsky, 1881
Pseudomastus Capaccioni-Azzati & Martin, 1992
Pomatoceros Philippi, 1844
Pomatoleios Pixell, 1913
Pomatostegus Schmarda, 1861
Pontaster Sladen, 1885
Pontodora Greeff, 1879
Pontogenia Claparède, 1868
Poraniomorpha Danielssen & Koren, 1881
Poranisca Verrill, 1914
Porcellanaster Wyville Thomson, 1877
Porphyrocrinus Gislén, 1925
Potamethus Chamberlin, 1919
Potamilla Malmgren, 1866
Potamis Ehlers, 1887
Pourtalosmilia Duncan, 1884
Pozziella Topsent, 1896
Praxillella Verrill, 1881
Praxillura Verrill, 1879
Praya Quoy & Gaimard in de Blainville, 1834
Prionospio Malmgren, 1867
Proboscidactyla Brandt, 1835
Proceraea Ehlers, 1864
Procerastea Langerhans, 1884
Proclea Saint-Joseph, 1894
Proclymene Arwidsson, 1906
Progebiophilus Codreanu & Codreanu, 1963
Progoniada Hartman, 1965
Prohatschekia Nunes-Ruivo, 1954
Prolopadorrhynchus
Pronax Gray, 1867
Pronaxella Burton, 1931
Prosphaerosyllis San Martín, 1984
Prosuberites Topsent, 1893
Protiara Haeckel, 1879
Protis Ehlers, 1887
Protoaricia Czerniavsky, 1881
Protocirrineris Czerniavsky, 1881
Protodorvillea Pettibone, 1961
Protodriloides Jouin, 1966
Nereiphylla Blainville, 1828
Nereis Linnaeus, 1758
Nereisyllis Blainville, 1828
Nerilla Schmidt, 1848
Nerillidium Remane, 1925
Nethea Sollas, 1888
Nicidion Kinberg, 1865
Nicolea Malmgren, 1866
Nicomache Malmgren, 1865
Nicotia Costa, 1864
Nidificaria Knight-Jones, 1984
Ninoe Kinberg, 1864
Noanelia Desbruyères & Laubier, 1977
Normania Bowerbank, 1869
Rosacea Quoy & Gaimard, 1827
Rossella Carter, 1872
Rullierinereis Pettibone, 1971
Sabella Linnaeus, 1767
Sabellaria Lamarck, 1812
Sabellides Milne Edwards in Lamarck, 1838
Saccella Woodring, 1925
Saccocirrus Bobretzky, 1872
Sacconereis J. Müller, 1853
Saenuris
Sagitella Wagner, 1872
Salacia Lamouroux, 1816
Salmacina Claparède, 1870
Salpa Forskål, 1775
Salvatoria McIntosh, 1885
Samytha
Samythella
Sarcotragus Schmidt, 1862
Sardorchestia Ruffo, 2004
Sarkaster Ludwig, 1905
Sarsia Lesson, 1843
Scalarispongia Cook & Bergquist, 2000
Scalibregma Rathke, 1843
Sceptrella Schmidt, 1870
Sceptrintus Topsent, 1898
Pyrenaster Verrill, 1899
Pyrosoma Péron, 1804
Pyrostremma Garstang, 1929
Pythonaster Sladen in Thomson & Murray, 1885
Quadrimaera Krapp-Schickel & Ruffo, 2000
Quasillina Norman, 1869
Questa Hartman, 1966
Quintoxilla de Laubenfels, 1950
Radiaster Perrier, 1881
Ransonia Kramp, 1947
Raphidrilus Monticelli, 1910
Raphiodesma Bowerbank, 1874
Raricirrus Hartmann, 1961
Raspaigella Schmidt, 1868
Raspailia Nardo, 1833
Rathkea Brandt, 1837
Regadrella Schmidt, 1880
Reniera Schmidt, 1862
Retaster Perrier, 1878
Rhabderemia Topsent, 1890
Rhabdeurypon Vacelet, 1969
Rhabdodictyum Schmidt, 1880
Rhabdoon Keferstein & Ehlers, 1861
Rhamphobrachium Ehlers, 1887
Rhaphidophlus Ehlers, 1870
Rhaphidorus Topsent, 1898
Rhaphidostyla Burton, 1935
Rhaphidotheca Kent, 1870
Rhaphisia Topsent, 1892
Rhegaster Sladen, 1883
Rhipidocotyle Diesing, 1858
Rhizaxinella Keller, 1880
Rhizoniera Griessinger, 1971
Rhizorhagium M. Sars, 1874
Rhodine Malmgren, 1865
Rhodopsis Bush, 1905
Rhopia Gray, 1840
Rhynchonerella [misspelling of Rhynchonereella Costa, 1864]
Cordylophora Allman, 1844
Cornuamesus Kavanagh & Wilson, 2007
Cornulotrocha Topsent, 1927
Cornulum Carter, 1876
Coronaster Perrier, 1885
Corybas Gray, 1867
Corydendrium Van Beneden, 1844
Corymorpha M. Sars, 1835
Corynocephalus Levinsen, 1885
Coscinasterias Verrill, 1870
Coscinoderma Carter, 1883
Cossura Webster & Benedict, 1887
Cradoscrupocellaria Vieira, Spencer Jones & Winston, 2013
Craspedacusta Lankester, 1880
Crella Gray, 1867
Crellastrina Topsent, 1927
Crellomima Rezvoi, 1925
Crenaster Perrier, 1885
Crenaster Perrier, 1885 non d'Orbigny, 1850
Cribella Forbes, 1841
Cribrella Lütken, 1857
Cribrella Schmidt, 1862
Cribrochalina Schmidt, 1870
Crinoniscus Perez, 1900
Crithida Gosse, 1855
Crossaster Müller & Troschel, 1840
Cryptocopoides Sieg, 1976
Crystallophyes Moser, 1925
Ctenodiscus Müller & Troschel, 1842
Ctenodrilus Claparède, 1863
Culcita Agassiz, 1836
Cyamon Gray, 1867
Cyclosalpa de Blainville, 1827
Cydonium Fleming, 1828
Cyllaster A.H. Clark, 1916
Seriola Hanitsch, 1889
Serpula Linnaeus, 1758
Sessibugula Osburn, 1950
Macellicephala McIntosh, 1885
Machairaster Perrier, 1884
Macrochaeta Grube, 1850
Macroclymene Verrill, 1900
Magdalenaster Koehler, 1907
Magelona F. Müller, 1858
Malacoceros Quatrefages, 1843
Malacosaccus Schulze, 1886
Maldane Grube, 1860
Maldanella McIntosh, 1885
Malmgrenia McIntosh, 1874
Malmgreniella Hartman, 1967
Mammiphitime Orensanz, 1990
Manayunkia Leidy, 1859
Marenzelleria Mesnil, 1896
Maresearsia Totton, 1954
Stauridiosarsia Mayer, 1910
Staurocladia Hartlaub, 1917
Staurodiscus Haeckel, 1879
Staurostoma Haeckel, 1879
Steenstrupia Forbes, 1846
Stellaria Nardo, 1834
Stelletta Schmidt, 1862
Stellettinopsis Carter, 1879
Stelligera Gray, 1867
Stellogeodia Czerniavsky, 1880
Stellonia Nardo, 1834
Stelodoryx Topsent, 1904
Stenetrium Haswell, 1881
Stenohelia Kent, 1870
Stephalia Haeckel, 1888
Stephanaster Ayres, 1851
Stephanasterias Verrill, 1871
Stephanomia Lesueur & Petit, 1807
Stephanophyes Chun, 1888
Stephanosyllis Claparède, 1864
Stephanotheca Reverter-Gil, Souto & Fernández-Pulpeiro, 2012
Sternaspis Otto, 1821
Podosphaeraster A.M. Clark, in Clark & Wright, 1962
Podospongia du Bocage, 1869
Poecillastra Sollas, 1888
Poecilochaetus Claparède, 1875
Polaruschakov Pettibone, 1976
Poliopogon Thomson, 1878
Polybostrichus Örsted, 1843
Polycirrus Grube, 1850
Polycyathus Duncan, 1876
Polydora Bosc, 1802
Polygordius Schneider, 1868
Polymastia Bowerbank, 1864
Polymastus Claparède, 1864
Polynoe Savigny in Lamarck, 1818
Polyodontes Renieri in Blainville, 1828
Polyophthalmus Quatrefages, 1850
Synops Vosmaer, 1882
Synthecium Allman, 1872
Tachytrypane McIntosh, 1876
Talochlamys Iredale, 1929
Tedania Gray, 1867
Tedaniella Czerniavsky, 1880
Terebella Linnaeus, 1767
Terebellides Sars, 1835
Tethya Lamarck, 1815
Tethyaster Sladen, 1889
Tethyspira Topsent, 1890
Tetraglene Grube, 1863
Tetrathyrus Claus, 1879
Tetrorchis Bigelow, 1909
Tetys
Thalamophyllia Duchassaing, 1870
Thalassochaetus Ax, 1954
Thalassophyes Moser, 1925,
Thalia Blumenbach, 1798
Thamnostoma Haeckel, 1879
Tharyx Webster & Benedict, 1887
Thaumastosoma Hessler, 1970
Sthenelais Kinberg, 1856
Sthenolepis Willey, 1905
Stichaster Müller & Troschel, 1840
Stichastrella Verrill, 1914
Stichopathes Brook, 1889
Stoeba Sollas, 1888
Stomacrustula Winston & Hayward, 2012
Storthyngura Vanhöffen, 1914
Streblosoma Sars, 1872
Streblospio Webster, 1879
Streetsia Stebbing, 1888
Streptodonta San Martín & Hutchings, 2006
Streptospinigera Kudenov, 1983
Streptosyllis Webster & Benedict, 1884
Strongylurella Hansen, 1913
Stryphnus Sollas, 1886
Stygocapitella Knöllner, 1934
Stylactaria Stechow, 1921
Stylasterias Verrill, 1914
Stylinos Topsent, 1891
Stylissa Hallmann, 1914
Stylocordyla Thomson, 1873
Stylotella Lendenfeld, 1888
Styracaster Sladen, 1883
Subadyte Pettibone, 1969
Sulculeolaria Blainville, 1830
Sycandra Haeckel, 1872
Sycetta Haeckel, 1872
Sycettusa Haeckel, 1872
Sycodorus Haeckel, 1872
Sycolepis Haeckel, 1869
Sycon Risso, 1827
Syconella Schmidt, 1868
Sycortis Haeckel, 1872
Sycum Agassiz, 1846
Sycurus Haeckel, 1870
Sycyssa Haeckel, 1872
Syllides Örsted, 1845
Siboglinum Caullery, 1914
Sideriaster Verrill, 1899
Sidonops Sollas, 1889
Sigalion Audouin & Milne Edwards in Cuvier, 1830
Sigambra Müller, 1858
Sige Malmgren, 1865
Silhouetta Millard & Bouillon, 1973
Simorhynchotus Stebbing, 1888
Simplaria Knight-Jones, 1984
Sinonereis Wu & Sun, 1979
Siphonochalina Schmidt, 1868
Siphonodictyon Bergquist, 1965
Siphonohydra Salvini-Plawen, 1966
Slabberia Forbes, 1846
Sminthea Gegenbaur, 1857
Soestia Kott, 1998
Solaster Forbes, 1839
Solaster(Polyaster) Gray, 1840
Soleneiscus Borojevic, Boury-Esnault & Vacelet, 1990
Solenosmilia Duncan, 1873
Sollasella Lendenfeld, 1888
Sosane Malmgren, 1866
Sosanopsis Hessle, 1917
Spanioplon Topsent, 1890
Speleohvarella Krsinic, 2005
Spermosyllis Claparède, 1864
Sperosoma Koehler, 1897
Sphaeraster Dons, 1938
Sphaeriaster Dons, 1939
Sphaeriodiscus Fisher, 1910
Sphaerocoryne Pictet, 1893
Sphaerodoridium Lützen, 1961
Sphaerodoropsis Hartman & Fauchald, 1971
Sphaerodorum Örsted, 1843
Sphaeronectes Huxley, 1859
Sphaerosyllis Claparède, 1863
Sphinctrella Schmidt, 1870
Protodrilus Czerniavsky, 1881
Protodrilus Hatschek, 1881
Protoesperia Czerniavsky, 1880
Protohydra Greeff, 1869
Protolaeospira Pixell, 1912
Protoleodora Pillai, 1970
Protomystides Czerniavsky, 1882
Protoschmidtia Czerniavsky, 1880
Protosuberites Swartchewsky, 1905
Protula Risso, 1826
Ulosa de Laubenfels, 1936
Umbellisyllis M. Sars, 1869
Unanereis Day, 1962
Uraster L. Agassiz, 1836
Urasterias Verrill, 1909
Urechinus A. Agassiz, 1879
Urobopyrus Richardson, 1904
Urocryptella Codreanu & Codreanu, 1963
Uschakovius Laubier, 1973
Ute Schmidt, 1862
Vanadis Clarapède, 1870
Vannuccia Brinckmann-Voss, 1967
Vaughanella Gravier, 1915
Vazella Gray, 1870
Vermilia Lamarck, 1818
Vermiliopsis Saint-Joseph, 1894
Verongia Bowerbank, 1845
Verrillaster Downey, 1973
Vinearia Knight-Jones, 1984
Vioa Nardo, 1839
Virchowia Langerhans, 1879
Vogtia Kölliker, 1853
Volzia Rosell & Uriz, 1997
Vosmaeria Fristedt, 1885
Vosmaeropsis Dendy, 1893
Vulcanella Sollas, 1886
Websterinereis Pettibone, 1971
Weelia Yount, 1954
Phorbas Duchassaing & Michelotti, 1864
Phoxaster Sladen, 1889
Phronimella Claus, 1871
Phronimopsis Claus, 1879
Phycopsis Carter, 1883
Timarete Kinberg, 1866
Tomopteris Eschscholtz, 1825
Topsentia Berg, 1899
Torrea
Tosia Gray, 1840
Trachyopsilla Burton, 1931
Trachytedania Ridley, 1881
Trachyteleia Topsent, 1928
Traustedtia Metcalf, 1918
Travisia Johnston, 1840
Travisiopsis Levinsen, 1885
Tregoubovia Picard, 1958
Tremaster Verrill, 1880
Trichasterina Schulze, 1900
Trichobranchus Malmgren, 1866
Trichogypsia Carter, 1871
Trichostemma Sars, 1869
Trichosyllis Schmarda, 1861
Trigonocidaris A. Agassiz, 1869
Trilobodrilus Remane, 1925
Triplasterias Engel & Schroevers, 1960
Tristenium Serov & Wilson, 1995
Trochochaeta Levinsen, 1884
Trochospongilla Vejdovsky, 1888
Tromikosoma Mortensen, 1903
Trygaeus Dohrn, 1881
Trypanosyllis Claparède, 1864
Tuberella Keller, 1880
Tulpa Stechow, 1921
Tylaster Danielssen & Koren, 1881
Tylexocladus Topsent, 1898
Typhinellus Jousseaume, 1880
Typhis Montfort, 1810
Thecocodium Bouillon, 1967
Thelepus Leuckart, 1849
Thenea Gray, 1867
Therochaeta Chamberlin, 1919
Thetys Tilesius, 1802
Thieliana Stepanjants, Timoshkin, Anokhin & Napara, 2000
Thoosa Hancock, 1849
Thoracaster Sladen, 1883
Thoracophelia Ehlers, 1897
Thorectandra Lendenfeld, 1889
Thrinacophora Ridley, 1885
Thylaciphorus Quatrefages, 1866
Thyraster Ives, 1890
Thyroscyphus Allman, 1877
Tiaranna Hartlaub, 1913
Scolelepis (Parascolelepis) Maciolek, 1987
Scolelepis (Scolelepis)
Scoloplos (Leodamas)
Scoloplos (Scoloplos) Blainville, 1828
Sphaerosyllis (Prosphaerosyllis) San Martín, 1984
Sphaerosyllis (Sphaerosyllis) Claparède, 1863
Spirorbis (Laeospira)
Spirorbis (Velorbis) Knight-Jones, Knight-Jones, 1995
Spongia (Spongia) Linnaeus, 1759
Stephanocyathus (Odontocyathus) Moseley, 1881
Syllis (Ehlersia) Quatrefages, 1865
Syllis (Haplosyllis) Langerhans, 1879
Syllis (Langerhansia) Czerniavsky, 1881
Syllis (Syllides) Örsted, 1845
Syllis (Syllis) Lamarck, 1818
Syllis (Typosyllis) Langerhans, 1879
Tedania (Tedania) Gray, 1867
Tedania (Trachytedania) Ridley, 1881
Tomopteris (Johnstonella) (Gosse, 1853)
Tosia (Plinthaster) Verrill, 1899
Trypanosyllis (Trypanosyllis)
Ripaster Koehler, 1906
Ritteriella Metcalf, 1919
Robertianella McIntosh, 1885
Grubea (Protogrubea) Czerniavsky, 1881
Halichondria (Eumastia) Schmidt, 1870
Halichondria (Halichondria) Fleming, 1828
Haliclona (Gellius) Gray, 1867
Haliclona (Halichoclona) de Laubenfels, 1932
Haliclona (Haliclona) Grant, 1836
Haliclona (Reniera) Schmidt, 1862
Haliclona (Rhizoniera) Griessinger, 1971
Haliclona (Soestella) De Weerdt, 2000
Hamacantha (Hamacantha) Gray, 1867
Hamacantha (Vomerula) Schmidt, 1880
Haplosyllis (Syllis) [auct.]
Harmothoe (Antinoella) Malmgren, 1866
Harmothoe (Austrolaenilla)
Harmothoe (Harmothoe) Kinberg, 1856
Hippasteria (Nehippasteria) Dons, 1938
Hyalonema (Cyliconema) Ijima, 1927
Hyalonema (Leptonema) Lendenfeld, 1915
Hymedesmia (Hymedesmia) Bowerbank, 1864
Hymedesmia (Stylopus) Fristedt, 1885
Janua (Dexiospira) Caullery & Mesnil, 1897
Langerhansia (Syllis) Lamarck, 1818
Latrunculia (Biannulata) Samaai, Gibbons & Kelly, 2006
Latrunculia (Latrunculia) du Bocage, 1869
Leptasterias (Endogenasterias) Djakonov, 1938
Leptasterias (Hexasterias) Fisher, 1930
Leptasterias (Leptasterias) Verrill, 1866
Lissodendoryx (Anomodoryx) Burton, 1934
Lissodendoryx (Lissodendoryx) Topsent, 1892
Mycale (Aegogropila) Gray, 1867
Mycale (Anomomycale) Topsent, 1924
Typhloscolex Busch, 1851
Typosyllis Langerhans, 1879
Alciopa (Halodora)
Anoxycalyx (Anoxycalyx) Kirkpatrick, 1907
Antho (Acarnia) Gray, 1867
Antho (Antho) Gray, 1867
Antho (Plocamia) Schmidt, 1870
Arabella (Arabella)
Aricidea (Acmira) Hartley, 1981
Aricidea (Aedicira) Hartman, 1957
Aricidea (Allia) Strelzov, 1973
Aricidea (Aricidea) [Webster, 1879, sensu stricto]
Aricidea (Strelzovia) Aguirrezabalaga, 2012
Asbestopluma (Helophloeina) Topsent, 1929
Asterias (Stolasterias) Sladen, 1889
Autolytus (Autolytides) Malaquin, 1893
Autolytus (Proceraea)
Autolytus (Regulatus) Imajima, 1966
Autolytus (Stephanosyllis) Claparède, 1864
Bushiella (Bushiella) Khight-Jones, 1973
Bushiella (Jugaria) Knight-Jones, 1978
Calthropella (Calthropella) Sollas, 1888
Calthropella (Corticellopsis) Bergquist, 1968
Ceratonereis (Composetia) Hartmann-Schröder, 1985
Cheiraster (Barbadosaster) A.M. Clark, 1981
Cheiraster (Cheiraster) Studer, 1883
Cheiraster (Luidiaster) Studer, 1884
Clathria (Clathria) Schmidt, 1862
Clathria (Cornulotrocha) Topsent, 1927
Clathria (Microciona) Bowerbank, 1862
Clathria (Paresperia) Burton, 1930
Clathria (Thalysias) Duchassaing & Michelotti, 1864
Clymenura (Cephalata) Imajima & Shiraki, 1982
Coelosphaera (Coelosphaera) Thomson, 1873
Mycale (Carmia) Gray, 1867
Mycale (Gomphostegia) Topsent, 1896
Mycale (Oxymycale) Hentschel, 1929
Mycale (Paresperella) Dendy, 1905
Mystides (Pseudomystides)
Myxilla (Burtonanchora) de Laubenfels, 1936
Myxilla (Ectyomyxilla) Hentschel, 1914
Myxilla (Myxilla) Schmidt, 1862
Myxilla (Stelodoryx) Topsent, 1904
Nereis (Eunereis) Malmgren, 1865
Nereis (Neanthes) Kinberg, 1866 emend. Hartman, 1940
Nereis (Nereis) Linnaeus, 1758
Nicomache (Loxochona) Arwidsson, 1906
Nicomache (Nicomache)
Notomastus (Clistomastus) Eisig, 1887
Ophidiaster (Hacelia) Gray, 1840
Orbinia (Orbinia) Quatrefages, 1865
Orbinia (Phylo) Kinberg, 1866
Paradexiospira (Paradexiospira) Caullery & Mesnil, 1897
Paradexiospira (Spirorbides) Chamberlin, 1919
Pectinaria (Amphictene) (Lamarck, 1818)
Pectinaria (Cistenides) (Malmgren, 1866)
Pectinaria (Lagis) (Malmgren, 1866)
Pectinaria (Pectinaria) Savigny, 1818
Petromica (Petromica) Topsent, 1898
Petrosia (Petrosia) Vosmaer, 1885
Petrosia (Strongylophora) Dendy, 1905
Phlyctaenopora (Phlyctaenopora) Topsent, 1904
Phyllodoce (Anaitides) Czerniavsky, 1882
Polynoe (Nemidia)
Polynoe (Robertianella)
Porania (Porania) Gray, 1840
Porania (Pseudoporania) Dons, 1936
Poraniomorpha (Culcitopsis) Verrill, 1914
Spinohenricia Heding, 1935
Spinther Johnston, 1845
Spio Fabricius, 1785
Spiochaetopterus Sars, 1853
Spiophanes Grube, 1860
Spirobranchus Blainville, 1818
Spirocodon Haeckel, 1880
Spirodiscus Fauvel, 1909
Spiroglyphus Daudin, 1800
Spirographis Viviani, 1805
Spirorbis Daudin, 1800
Spirorhabdia Topsent, 1918
Spiroxya Topsent, 1896
Spongelia Nardo, 1847
Spongia Linnaeus, 1759
Spongilla Lamarck, 1816
Spongionella Bowerbank, 1862
Spongosorites Topsent, 1896
Agelas oroides (Schmidt, 1864)
Aglaiocypris complanata (Brady & Robertson, 1869)
Aglaophamus agilis (Langerhans, 1880)
Aglaophamus malmgreni (Théel, 1879)
Aglaophamus pulcher (Rainer, 1991)
Aglaophamus rubella (Michaelsen, 1897)
Aglaophamus rubellus (Michaelsen, 1896)
Aglaophenopsis bonnevieae (Jäderholm, 1909)
Aglaophenopsis cartieri (Bedot, 1921)
Aglaophenopsis cornuta (Fewkes, 1881)
Aka coralliphaga (Rützler, 1971)
Aka infesta (Johnson, 1889)
Aka insidiosa (Johnson, 1899)
Aka labyrinthica (Hancock, 1849)
Albatrossaster richardi Koehler, 1909
Albatrossia semimarginalis Ludwig, 1905
Alciopa reynaudi Audouin & Milne Edwards, 1833
Alciopa (Halodora) petersii Langerhans, 1880
Pseudomesus Hansen, 1916
Pseudomystides Bergström, 1914
Pseudonereis Kinberg, 1865
Pseudonotomastus Warren & Parker, 1994
Pseudopolydora Czerniavsky, 1881
Pseudoporania Dons, 1936
Pseudopotamilla Bush, 1905
Pseudoscalibregma Ashworth, 1901
Pseudosuberites Topsent, 1896
Pseudosyllides Augener, 1927
Pseudosyllis Grube, 1863
Pseudotrachya Hallmann, 1914
Pseudovermilia Bush, 1907
Psilaster Sladen, 1885
Psilasteropsis Fisher, 1906
Pteraster Müller & Troschel, 1842
Pterasterides Verrill, 1909
Pterocirrus Claparède, 1868
Pterolysippe Augener, 1918
Pterosyllis Claparède, 1863
Ptilohyale Bousfield & Hendrycks, 2002
Ammothea echinata Hodge, 1864
Ammothella gertrudae Müller & Krapp, 2009
Ammotrypane aulogaster Rathke, 1843
Ammotrypanella arctica McIntosh, 1879
Amorphina dubia Czerniavsky, 1880
Amorphina fasciculata Fristedt, 1887
Amorphina genitrix Schmidt, 1870
Amorphina grisea Fristedt, 1887
Amorphina nodosa Fristedt, 1887
Amorphina paciscens Schmidt, 1875
Amorphina protochalina Czerniavsky, 1880
Amorphina renieroides Fristedt, 1887
Amorphina velamentosa Hansen, 1885
Amorphinopsis filigrana (Schmidt, 1862)
Amorphinopsis pallescens (Topsent, 1892)
Schaudinnia Schulze, 1900
Schistomeringos Jumars, 1974
Schizopathes Brook, 1889
Schizoscelus Claus, 1879
Schizotricha Allman, 1883
Schmardia Quatrefages, 1866
Schmidtia Balsamo Crivelli, 1863
Schroederella Laubier, 1962
Schuchertinia Miglietta, McNally & Cunningham, 2010
Sclerobregma Hartman, 1965
Sclerocheilus Grube, 1863
Scolaricia Eisig, 1914
Scolelepis Blainville, 1828
Scoletoma Blainville, 1828
Scolionema Kishinouye, 1910
Scolopendra Slabber, 1781
Scoloplos Blainville, 1828
Scopalina Schmidt, 1862
Scypha Gray, 1821
Scyphidium Schulze, 1900
Scyracepon Tattersall, 1905
Semisuberites Carter, 1877
Semivermilia ten Hove, 1975
Amaeana trilobata (Sars, 1863)
Amage adspersa (Grube, 1863)
Amage auricula Malmgren, 1866
Amage gallasii Marion, 1876
Amage scotica Clark, 1952
Amagopsis klugei Pergament & Khlebovich, 1964
Amallothrix lobata (Sars G.O., 1920)
Amblyosyllis finmarchica (Malmgren, 1867)
Amblyosyllis formosa (Claparède, 1863)
Amblyosyllis granosa Ehlers, 1897
Amblyosyllis lineata Grube, 1863
Amblyosyllis lineolata (A. Costa, 1864)
Amblyosyllis madeirensis Langerhans, 1879
Coscinasterias (Stolasterias) Sladen, 1889
Crella (Crella) Gray, 1867
Crella (Grayella) Carter, 1869
Crella (Pytheas) Topsent, 1890
Crella (Yvesia) Topsent, 1890
Dercitus (Dercitus) Gray, 1867
Dercitus (Stoeba) Sollas, 1888
Doliolina (Doliolina) sensu Garstang, 1933
Doliolina (Doliolinetta) Godeaux, 1998
Doloria (Doloria) Skogsberg, 1920
Echinaster (Echinaster) Müller & Troschel, 1840
Echinaster (Othilia) Gray, 1840
Ehlersia (Syllis) Lamarck, 1818
Endectyon (Hemectyon) Topsent, 1920
Eteone (Mysta) Malmgren, 1865
Eulalia (Sige)
Eumida (Eumida)
Eurypon (Acantheurypon) sensu Topsent, 1927
Exogone (Exogone) Örsted, 1845
Exogone (Parexogone) Mesnil & Caullery, 1918
Exogone (Sylline) Claparède, 1864
Amphicaryon peltifera (Haeckel, 1888)
Amphicorina pectinata (Banse, 1957)
Amphicteis gunneri (M. Sars, 1835)
Amphicteis ninonae Jirkov, 1985
Amphicteis sundevalli Malmgren, 1866
Amphictene auricoma (O.F. Müller, 1776)
Amphidetus Kürtzii Girard, 1852
Amphidetus mediterraneus Forbes, 1844
Amphidotus roseus Forbes, 1841
Amphiduros fuscescens (Marenzeller, 1875)
Amphiglena mediterranea (Leydig, 1851)
Amphilectus armatus (Bowerbank, 1866)
Amphilectus columnatus (Topsent, 1890)
Amphilectus foliata (Bowerbank, 1874)
Typosyllis (Langerhansia) Czerniavsky, 1881
Typosyllis (Syllis) [auct.]
Typosyllis (Typosyllis) Langerhans, 1879
Vulcanella (Annulastrella) Maldonado, 2002
Vulcanella (Vulcanella) Sollas, 1886
Abarenicola claparedi (Levinsen, 1884)
Abarenicola pusilla (Quatrefages, 1866)
Abraliopsis morisii (Vérany, 1839)
Abylopsis eschscholtzii (Huxley, 1859)
Acanthancora clavatancora Topsent, 1927
Acanthancora schmidti (Topsent, 1898)
Acanthella acuta Schmidt, 1862
Acanthella annulata Sarà, 1958
Acanthella erecta (Carter, 1876)
Acanthella mastophora (Schmidt, 1870)
Acanthella multiformis Vosmaer, 1885
Acanthella obtusa Schmidt, 1862
Acantheurypon pilosella (Topsent, 1904)
Acantheurypon scabiosum Topsent, 1927
Acantheurypon spinispinosum (Topsent, 1904)
Acanthicolepis asperrima (M. Sars, 1861)
Anchinia savigniania Rathke, 1835
Anchinoe arneseni Topsent, 1913
Anchinoe perarmatus (Bowerbank, 1866)
Anchinoe roemeri Hentschel, 1929
Anchylomera blossevillei Milne Edwards, 1830
Ancistrosyllis cingulata (Korschelt, 1893)
Ancistrosyllis fioronii Fiege & Böggemann, 1999
Ancistrosyllis groenlandica McIntosh, 1879
Ancistrosyllis hamata (Hartman, 1960)
Ancorina aaptos Schmidt, 1864
Ancorina cerebrum Schmidt, 1862
Ancorina hispida Buccich, 1886
Ancorina simplicissima Schmidt, 1868
Poraniomorpha (Culcitopsis) Verrill, 1914
Poraniomorpha (Poraniomorpha) Danielssen & Koren, 1881
Prionospio (Minuspio) [auctorum]
Prionospio (Prionospio) [auctorum]
Protolaeospira (Protolaeospira)
Pteraster (Temnaster) Verrill, 1894
Raspailia (Clathriodendron) Lendenfeld, 1888
Raspailia (Parasyringella) Topsent, 1928
Raspailia (Raspailia) Nardo, 1833
Raspailia (Syringella) non Schmidt, 1868
Rhamphobrachium (Spinigerium)
Anoplodactylus amora Bamber & Costa, 2009
Anoplodactylus guachaquitae Müller & Krapp, 2009
Anoplonereis herrmanni Giard, 1882
Anoplosyllis edentula Claparède, 1868
Anoplosyllis fulva Marion & Bobretzky, 1875
Anoxycalyx (Anoxycalyx) laceratus Koltun, 1967
Anseropoda lobiancoi (Ludwig, 1897)
Anseropoda placenta (Pennant, 1777)
Antarctothoa galaica Cesar-Aldariz, Fernández-Pulpeiro & Reverter-Gil, 1999
Antho arctica (Koltun, 1959)
Antho brattegardi van Soest & Stone, 1986
Antho circonflexa (Lévi, 1960)
Antho coriacea (Bowerbank, 1874)
Antho dichotoma (Linnaeus, 1767)
Antho erecta (Ferrer-Hernandez, 1923)
Antho fragilis (Koltun, 1959)
Antho granditoxa Picton & Goodwin, 2007
Antho inconstans (Topsent, 1925)
Antho lundbecki (Breitfuss, 1912)
Antho novizelanica (Ridley & Duncan, 1881)
Antho oxeifera (Ferrer-Hernandez, 1921)
Antho paradoxa (Babic, 1922)
Amphilectus gerzensteini Swartschevsky, 1906
Amphilectus glaber (Brøndsted, 1924)
Amphilectus laciniosa (Bowerbank in Norman, 1869)
Amphilectus lobata (Montagu, 1814)
Amphilectus lobatus (Montagu, 1814)
Amphilectus mutilus (Bowerbank, 1874)
Amphilectus osculosus Topsent, 1892
Amphilectus pedicellatus (Lundbeck, 1905)
Amphilectus strongylatus Alander, 1942
Amphilectus typichela (Lundbeck, 1905)
Amphimedon chloros Ilan, Gugel & van Soest, 2004
Amphinome rostrata (Kinberg, 1867)
Amphiro simplex Langerhans, 1884
Amphithyrus bispinosus Claus, 1879
Amphithyrus similis Claus, 1879
Amphitrite affinis Malmgren, 1866
Amphitrite alcicornis Fauvel, 1909
Amphitrite cirrata (O. F. Müller, 1771 in 1776)
Amphitrite edwardsi (de Quatrefages, 1866)
Amphitrite groenlandica Malmgren, 1866
Amphitrite johnstoni Malmgren, 1865
Amphitrite orotavae Langerhans, 1881
Amphitrite praecox Saint-Joseph, 1899
Amphitrite rubra (Risso, 1826)
Amphitrite variabilis (Risso, 1826)
Amphitritides gracilis (Grube, 1860)
Amphitritides kuehlmanni Arvantidis & Koukouras, 1995
Amphiute paulini Hanitsch, 1894
Amphoriscus buccichi Ebner, 1887
Amphoriscus buccichii Ebner, 1887
Amphoriscus chrysalis (Schmidt, 1864)
Amphoriscus cylindricus (Haeckel, 1870)
Amphoriscus cylindrus (Haeckel, 1872)
Syllidia Quatrefages, 1865
Sylline Claparède, 1864
Syllis Lamarck, 1818
Sympagella Schmidt, 1870
Synapturichthys Chabanaud, 1927
Synelmis Chamberlin, 1919
Syneurycope Hansen, 1916
Synmerosyllis San Martín, López & Aguado, 2009
Acar clathrata (Defrance, 1816)
Acervochalina limbata (Montagu, 1814)
Acervochalina loosanoffi (Hartmann, 1958)
Aceste bellidifera Thomson, 1877
Achelia japonica Ortmann, 1890
Achelia longipes (Hodge, 1864)
Acheliderma lemniscatum Topsent, 1892
Acholoe squamosa (Delle Chiaje, 1827)
Achramorpha schulzei (Breitfuss, 1896)
Acrobelione reverberii (Restivo, 1970)
Acrocirrus frontifilis (Grube, 1860)
Aonides oxycephala (Sars, 1862)
Aonides paucibranchiata Southern, 1914
Aphanipathes abietina (Pourtalès, 1874)
Apharyngtus punicus Westheide, 1971
Aphelochaeta filiformis (Keferstein, 1862)
Aphelochaeta monilaris (Hartman, 1960)
Aphrocallistes azoricus Topsent, 1901
Aphrocallistes beatrix Gray, 1858
Aphrocallistes bocagei Wright, 1870
Aphroceras caespitosa (Haeckel, 1872)
Aphroceras corticata Lendenfeld, 1891
Aphroceras ramosa Carter, 1886
Aphrodita aculeata Linnaeus, 1758
Aphrodita alta Kinberg, 1856
Aphrodita perarmata Roule, 1898
Aphroditaster gracilis Sladen, 1889
Wigginsia de Laubenfels, 1953
Wilsoniella Pettibone, 1993
Xenosyllis Marion & Bobretzky, 1875
Xestospongia de Laubenfels, 1932
Yvesia Topsent, 1890
Yvesiella de Laubenfels, 1936
Zatsepinia Jirkov, 1986
Zeppelina Vaillant, 1890
Zeuctocrinus AM Clark, 1973
Zoroaster Thomson, 1873
Zygophylax Quelch, 1885
Actigia vanbenedeni (Hincks, 1869)
Aculeorhynchus glandulis Schilke, 1969
Adercodon pleijeli Mackie, 1994
Adocia cribrata Pulitzer-Finali, 1983
Adocia laevis Griessinger, 1971
Adocia reptans Griessinger, 1971
Adocia simulans (Johnston, 1842)
Adocia varia Sarà, 1958
Adocia venata Sarà, 1960
Adyte assimilis (McIntosh, 1876)
Adyte pellucida (Ehlers, 1864)
Aedicira mediterranea Laubier & Ramos, 1974
Aegina rosea Eschscholtz, 1829
Aeginura grimaldii Maas, 1904
Aequorea conica Browne, 1905
Aequorea forskalea Péron & Lesueur, 1810
Aerope rostrata Thomson, 1877
Aeropsis rostrata (Thomson, 1877)
Agalma clausi Bedot, 1888
Agalma elegans (Sars, 1846)
Agalma okenii Eschscholtz, 1825
Agalma rubra Vogt, 1852
Agalmopsis utricularia Claus, 1879
Aquilaspio sexoculata (Augener, 1918)
Aquilonastra burtoni (Gray, 1840)
Amblyosyllis rhombeata Grube, 1857
Arenicola cristata Stimpson, 1856
Arenicola defodiens Cadman & Nelson-Smith, 1993
Arenicola marina (Linnaeus, 1758)
Arenicolides branchialis (Audouin & Milne Edwards, 1833)
Arenicolides ecaudata (Johnston, 1835)
Arenotrocha minuta Westheide & Nordheim, 1985
Arichlidon reyssi (Katzmann, Laubier & Ramos, 1974)
Aricia latreillii Audouin & Milne Edwards, 1833
Aricidea aberrans Laubier & Ramos, 1974
Aricidea abranchiata Hartman, 1965
Aricidea abyssalis Laubier & Ramos, 1974
Aricidea albatrossae Pettibone, 1957
Aricidea annae Laubier, 1967
Aricidea assimilis Tebble, 1959
Aricidea capensis Day, 1961
Aricidea catherinae Laubier, 1967
Aricidea cerruti [auctt. misspelling]
Aricidea cerrutii Laubier, 1966
Aricidea claudiae Laubier, 1967
Aricidea fauveli Hartman, 1957
Aricidea fragilis Webster, 1879
Aricidea jeffreysii [Auctt. (Non McIntosh, 1879)]
Aricidea longobranchiata Day, 1961
Aricidea lopezi Berkeley & Berkeley, 1956
Aricidea mariannae Katzmann & Laubier, 1975
Aricidea minuta Southward, 1956
Aricidea monicae Laubier, 1967
Aricidea neosuecica Hartman, 1965 sensu Laubier & Ramos, 1974
Aricidea philbinae Brown, 1976
Aricidea quadrilobata Webster & Benedict, 1887
Aricidea roberti Hartley, 1983
Aricidea simonae Laubier & Ramos, 1974
Aricidea suecica Eliason, 1920
Aricidea trilobata Laubier & Ramos, 1974
Aricidea (Acmira) assimilis Tebble, 1959
Aricidea (Acmira) catherinae Laubier, 1967
Aricidea (Acmira) cerrutii Laubier, 1966
Aricidea (Acmira) laubieri Hartley, 1981
Aricidea (Acmira) lopezi Berkeley & Berkeley, 1956
Aricidea (Acmira) simonae Laubier & Ramos, 1974
Aricidea (Acmira) simplex Day, 1963
Aricidea (Acmira) trilobata Imajima, 1973
Aricidea (Allia) belgicae (Fauvel, 1936)
Aricidea (Allia) mariannae Katzmann & Laubier, 1975
Aricidea (Allia) mediterranea (Laubier & Ramos, 1974)
Aricidea (Allia) monicae Laubier, 1967
Aricidea (Allia) pseudannae Katzmann & Laubier, 1975
Aricidea (Allia) roberti Hartley, 1984
Aricidea (Allia) suecica Eliason, 1920
Aricidea (Aricidea) albatrossae Pettibone, 1957
Aricidea (Aricidea) capensis Day, 1961
Aricidea (Aricidea) fauveli Hartman, 1957
Aricidea (Aricidea) fragilis Webster, 1879
Aricidea (Aricidea) minuta Southward, 1956
Aricidea (Aricidea) pseudoarticulata Hobson, 1972
Aricidea (Aricidea) wassi Pettibone, 1965
Aricidea (Strelzovia) abyssalis Laubier & Ramos, 1974
Aricidea (Strelzovia) claudiae Laubier, 1967
Aricidea (Strelzovia) mariannae Katzmann & Laubier, 1975
Aricidea (Strelzovia) monicae Laubier, 1967
Aricidea (Strelzovia) quadrilobata Webster & Benedict, 1887
Aricidea (Strelzovia) roberti Hartley, 1984
Aricidea (Strelzovia) suecica Eliason, 1920
Ampharete acutifrons (Grube, 1860)
Ampharete arctica Malmgren, 1866
Ampharete falcata Eliason, 1955
Ampharete finmarchica (M. Sars, 1864)
Ampharete goesi Malmgren, 1866
Ampharete gracilis Malmgren, 1866
Ampharete grubei Malmgren, 1865
Ampharete lindstroemi Malmgren, 1867 sensu Hessle, 1917
Ampharete petersenae Zhirkov, 1997
Ampharete sibirica Wirén, 1883
Ampharete vega (Wirén, 1883)
Amphicaryon acaule Chun, 1888
Amphicaryon ernesti Totton, 1954
Asbestopluma (Asbestopluma) hydra Lundbeck, 1905
Asbestopluma (Asbestopluma) hypogea Vacelet & Boury-Esnault, 1996
Asbestopluma (Asbestopluma) lycopodium (Levinsen, 1887)
Asbestopluma (Asbestopluma) minuta (Lambe, 1900)
Asbestopluma (Asbestopluma) quadriserialis Tendal, 1973
Asbestopluma (Asbestopluma) ramosa Koltun, 1958
Asbestopluma (Asbestopluma) versatilis (Topsent, 1890)
Ascaltis cerebrum Haeckel, 1872
Ascaltis lamarcki (Haeckel, 1870)
Ascandra contorta (Bowerbank, 1866)
Ascandra variabilis Haeckel, 1870
Ascidonia flavomaculata (Heller, 1864)
Asclerocheilus intermedius (Saint-Joseph, 1894)
Asconema fristedti Tabachnick & Menshenina, 2007
Asconema setubalense Kent, 1870
Asconema topsenti Tabachnick & Menshenina, 2007
Ascorhynchus arenicola (Dohrn, 1881)
Asetocalamyzas laonicola Tzetlin, 1985
Aspidodiadema antillarum A. Agassiz, 1880
Aspidodiadema jacobyi A. Agassiz, 1880
Alciopina parasitica Claparède & Panceri, 1867
Alcyonium boletiforme Lamarck, 1815
Alcyonium cranium Müller, 1776
Alcyonium cydonium Jameson, 1811
Alcyonium domuncula Olivi, 1792
Alcyonium epiphytum Lamarck, 1815
Alcyonium ficus sensu Pallas, 1766
Alectona wallichii (Carter, 1874)
Alentia gelatinosa (M. Sars, 1835)
Alentiana aurantiaca (Verrill, 1885)
Alitta succinea (Leuckart, 1847)
Alitta virens (M. Sars, 1835)
Alkmaria romijni Horst, 1919
Allmaniella setubalensis McIntosh, 1885
Allopatiria ocellifera (Gray, 1847)
Alloscleria tenuispinosa (Topsent, 1927)
Asteracanthion stellionura Perrier, 1869
Asterias acervata Stimpson, 1862
Asterias affinis Brandt, 1835
Asterias alboverrucosa Brandt, 1835
Asterias amurensis Lutken, 1871
Asterias angulosa Abildgaard in O.F. Müller, 1788
Asterias arancia Dewhurst, 1834
Asterias aranciaca Linnaeus, 1758
Asterias aspera O.F. Müller, 1776
Asterias atlantica Verrill, 1868
Asterias aurantiaca Tiedemann, 1816
Asterias bidentata Bruzelius, 1805
Asterias bifida Pennant, 1777
Asterias bispinosa Otto, 1823
Asterias borealis Perrier, 1875
Asterias brachiata Montagu, 1804
Asterias caput-medusae Linnaeus, 1758
Asterias carinifera Lamarck, 1816
Asterias cartilaginea Fleming, 1828
Asterias clathrata Pennant, 1777
Asterias coriacea Grube, 1840
Asterias cribraria Stimpson, 1862
Asterias echinata Delle Chiaje, 1828
Asterias echinophora Delle Chiaje, 1827
Asterias edmundi Ludwig, 1897
Asterias endeca Linnaeus, 1771
Asterias enopla Verrill, 1895
Asterias equestris Linnaeus, 1758
Asterias forbesi (Desor, 1848)
Asterias gibbosa Pennant, 1777
Asterias glacialis Linnaeus, 1758
Asterias gracilis Perrier, 1881
Asterias granularis Gmelin, 1791
Asterias granularis Retzius, 1783
Asterias gunneri Danielssen & Koren, 1884
Asterias helianthemoides Pennant, 1777
Asterias hispida Pennant, 1777
Asterias holsatica Retzius, 1805
Asterias hyperborea Danielssen & Koren, 1882
Asterias imperati Delle Chiaje, 1841
Asterias irregularis Pennant, 1777
Asterias johnstoni Gray, in Johnston, 1836
Asterias jonstoni Delle Chiaje, 1827
Asterias laevigata (Linnaeus, 1758)
Asterias longipes Retzius, 1805
Asterias madeirensis Stimpson, 1862
Asterias membranacea Retzius, 1783
Asterias militaris O.F. Müller, 1776
Asterias minuta Linnaeus, 1761
Asterias mülleri Norman, 1865
Asterias normani Danielssen & Koren, 1883
Asterias oculata Pennant, 1777
Asterias ophidiana de Lamarck, 1816
Asterias panopla Stuxberg, 1879
Asterias papposus Linnaeus, 1776
Asterias pentacantha Delle Chiaje, 1827
Asterias pentaphylla Pennant, 1777
Asterias perforata O.F. Müller, 1776
Asterias pertusa O.F. Müller, 1776
Asterias phrygiana Parelius, 1768
Asterias placenta Pennant, 1777
Asterias platyacantha Philippi, 1837
Asterias polaris Sabine, 1824
Asterias rarispina Perrier, 1875
Asterias richardi Perrier, 1882
Asterias rosea O.F. Müller, 1776
Asterias rubens Linnaeus, 1758
Asterias rubra Delle Chiaje, 18??
Asterias rumphii Parelius, 1768
Asterias sagena Retzius, 1805
Asterias sanguinolenta O.F. Müller, 1776
Asterias savaresi Delle Chiaje, 1825
Asterias seposita Retzius, 1783
Asterias spinosa Pennant, 1777
Asterias spinosa Say, 1825
Asterias spinulosus Philippi, 1837
Asterias subinermis Philippi, 1837
Asterias subulata de Lamarck, 1816
Asterias tenuispina Lamarck, 1816
Asterias tessellata Lamarck, 1816
Asterias tessellatus de Lamarck, 1816
Asterias variolata Risso, 1826
Asterias verruculata Retzius, 1805
Asterias vulgaris Verrill, 1866
Asterias (Stolasterias) volsellatus Sladen, 1889
Asterina borealis Verrill, 1878
Asterina burtoni Gray, 1840
Asterina cepheus (Müller & Troschel, 1842)
Asterina gibbosa (Pennant, 1777)
Ancorina verruca Schmidt, 1862
Ancyroniscus bonnieri Caullery & Mesnil, 1919
Anisarthrus pelseneeri Giard, 1907
Anisoxya glabra Topsent, 1898
Anobothrus gracilis (Malmgren, 1866)
Anobothrus laubieri (Desbruyères, 1978)
Atlantisella incognita Tabachnick, 2002
Auchenoplax crinita Ehlers, 1887
Augeneria algida (Wirén, 1901)
Augeneria tentaculata Monro, 1930
Augeneriella lagunari Gitay, 1970
Auletta grantioides Lévi & Vacelet, 1958
Auletta pedunculata (Topsent, 1896)
Auletta sessilis Topsent, 1904
Auletta sycinularia Schmidt, 1870
Aulospongus villosus (Thiele, 1898)
Aurospio banyulensis (Laubier, 1966)
Aurospio dibranchiata Maciolek, 1981
Austrodecus (Tubidecus) aconae (Hedgpeth & McCain, 1971)
Austrolaenilla mollis (Sars, 1872)
Autolytus alexandri Malmgren, 1867
Autolytus antondohrni Çinar & Gambi, 2005
Autolytus aurantiacus (Claparède, 1868)
Autolytus benazzii Cognetti, 1953
Autolytus brachycephalus (Marenzeller, 1874)
Autolytus cognettii Çinar & Gambi, 2005
Autolytus convolutus Cognetti, 1953
Autolytus cornutus Agassiz, 1862
Autolytus edwardsi Saint Joseph, 1887
Autolytus ehbiensis Saint Joseph, 1887
Autolytus emertoni Verrill, 1881
Autolytus fallax Malmgren, 1867
Autolytus groenlandicus Wesenberg-Lund, 1947
Autolytus incertus Malmgren, 1867
Asterina minuta Nardo, 1834
Asterina pancerii (Gasco, 1870)
Asterina phylactica Emson & Crump, 1979
Asterina wega Perrier, 1875
Asteriscus arrecifensis Greeff, 1872
Asteriscus palmipes Müller & Troschel, 1842
Asteriscus pancerii Gasco, 1876
Asteropsis capreensis Gasco, 1876
Asteropsis carinifera (Lamarck, 1816)
Asteropsis ctenacantha Müller & Troschel, 1842
Asthenosoma reynoldsii A. Agassiz, 1880
Astrella simplex Perrier, in Milne-Edwards, 1882
Astrella tuberosa Topsent, 1892
Astrogonium aculeatum Barrett, 1857
Astrogonium aequabile Koehler, 1907
Astrogonium annectens Perrier, 1894
Astrogonium aphrodite Perrier, 1894
Astrogonium boreale Barrett, 1857
Astrogonium dubium Perrier, 1869
Astrogonium eminens Koehler, 1907
Astrogonium fallax Perrier, 1885
Astrogonium greeni Bell, 1889
Astrogonium hystrix Perrier, 1894
Astrogonium longobrachiale Koehler, 1907
Astrogonium marginatum Koehler, 1909
Astrogonium necator Perrier, 1894
Astropecten acicularis Norman, 1865
Astropecten andromeda Müller & Troschel, 1842
Astropecten antarcticus Studer, 1884
Astropecten aranciacus (Linnaeus, 1758)
Astropecten arcticus M. Sars, 1851
Astropecten aster De Filippi, 1859
Astropecten bispinosus (Otto, 1823)
Astropecten crenaster Dujardin & Hupé, 1862
Autolytus inermis Saint Joseph, 1887
Autolytus irregularis Imajima & Hartman, 1964
Autolytus labordai San Martín & López, 2002
Autolytus langerhansi Gidholm, 1967
Autolytus longeferiens Saint Joseph, 1887
Autolytus longigula Verrill, 1881
Autolytus longoprimicirratus Lòpez, San Martín & Jiménez, 1997
Autolytus lugens Saint Joseph, 1887
Autolytus megodon Saint Joseph, 1887
Autolytus mirabilis Verrill, 1882
Autolytus neapolitanus Cognetti, 1953
Autolytus newtoni Malmgren, 1867
Autolytus paradoxus Saint Joseph, 1887
Autolytus prismaticus (O.F. Müller, 1776)
Autolytus prolifer (O.F. Müller, 1788)
Autolytus prolifera (O.F. Müller, 1788)
Autolytus punctatus Saint Joseph, 1887
Autolytus quindecimdentatus Langerhans, 1884
Autolytus roseus Claparède, 1864
Autolytus rubrolineatus Gildhom, 1967
Autolytus rubropunctatus (Grube, 1860)
Autolytus rubrovittatus Claparède, 1864
Autolytus sardai San Martín & Alós, 1987
Autolytus smittiae Malaquin, 1893
Autolytus syllisetosus Langerhans, 1884
Autolytus trilineatus Berkeley & Berkeley, 1945
Autolytus tyrrhenicus Cognetti, 1953
Autolytus verrilli Marenzeller, 1892
Autolytus (Proceraea) ornatus Marion & Bobretzky, 1875
Autolytus (Stephanosyllis) scapularis Claparède, 1864
Axinella agnata Topsent, 1896
Axinella arctica (Vosmaer, 1885)
Axinella babici Vacelet, 1961
Astropecten cristii Düben & Koren, in Düben, 1845
Astropecten echinulatus Müller & Troschel, 1844
Astropecten gruveli Koehler, 1911
Astropecten helgolandicus Greeff, 1871
Astropecten hermatophilus Sladen, 1883
Astropecten ibericus Perrier, 1894
Astropecten irregularis (Pennant, 1777)
Astropecten jonstoni (Delle Chiaje, 1827)
Astropecten luetkeni Barrett, 1957
Astropecten meridionalis Studer, 1876
Astropecten muelleri Müller & Troschel, 1844
Astropecten myosurus Perrier, 1869
Astropecten pallidus Danielssen & Koren, 1877
Astropecten parelii Düben & Koren, 1846
Astropecten perarmatus Perrier, 1869
Astropecten platyacanthus (Philippi, 1837)
Astropecten sphenoplax Bell, 1892
Astropecten spinulosus (Philippi, 1837)
Astropecten squamatus Müller & Troschel, 1844
Astropecten tenuispinus Düben & Koren, 1846
Astylinifer planus Topsent, 1927
Asychis biceps (M. Sars, 1861)
Asychis gotoi
Asychis variantia (Bowerbank, 1858)
Asymmetrione foresti (Bourdon, 1968)
Athelges bilobus G.O. Sars, 1898
Athelges cladophorus Gerstaecker, 1862
Athelges guitarra Giard & Bonnier, 1890
Athelges intermediaire (Hesse, 1876)
Athelges paguri (Rathke, 1843)
Athelges pelagosae Babic, 1912
Athelges prideauxii Giard & Bonnier, 1890
Athelges tenuicaudis G.O. Sars, 1898
Athelgue intermedia Anonymous, 1886
Amphoriscus glacialis (Haeckel, 1872)
Amphoriscus gregorii (Lendenfeld, 1891)
Amphoriscus murmanensis Breitfuss, 1898
Amphoriscus oviparus (Haeckel, 1872)
Amythasides macroglossus Eliason, 1955
Anaitides citrina (Malmgren, 1865)
Anaitides groenlandica (Örsted, 1842)
Anaitides longipes (Kinberg, 1866)
Anaitides maculata (Linnaeus, 1767)
Anaitides mucosa (Örsted, 1843)
Axinella mammillata Hanitsch, 1890
Axinella mastophora Schmidt, 1870
Axinella microdragma (Lendenfeld, 1897)
Axinella minuta Lévi, 1957
Axinella multiformis (Vosmaer, 1885)
Axinella padina Topsent, 1896
Axinella parva Picton & Goodwin, 2007
Axinella pedunculata Topsent, 1896
Axinella perlucida Topsent, 1896
Axinella pocillum (Bowerbank, 1866)
Axinella polypoides Schmidt, 1862
Axinella pseudominuta Bibiloni, 1993
Axinella pumila Keller, 1889
Axinella pyramidata Stephens, 1916
Axinella rugosa (Bowerbank, 1866)
Axinella salicina Schmidt, 1868
Axinella setosa Hentschel, 1929
Axinella subdola (Bowerbank, 1866)
Axinella thielei (Topsent, 1898)
Axinella trichophora Hentschel, 1929
Axinella variabilis (Vosmaer, 1882)
Axinella vasonuda Topsent, 1904
Axinella vellerea Topsent, 1904
Axinella verrucosa (Esper, 1794)
Axinella verrucosa Brøndsted, 1924
Aphrogenia alba Kinberg, 1856
Aphropharynx heterochaeta Wilfert, 1974
Apistobranchus tenuis Orrhage, 1962
Apistobranchus tullbergi (Théel, 1879)
Aplysilla arenosa Hentschel, 1929
Aplysilla glacialis (Merejkowski, 1878)
Aplysilla sulfurea Schulze, 1878
Aplysina carnosa Schmidt, 1862
Aplysina incrustans Carter, 1876
Aplysina massa (Szymanski, 1904)
Aplysina tuberosa (Szymanski, 1904)
Aplysina zetlandica (Bowerbank, 1866)
Aplysinopsis massa Szymanski, 1904
Aplysinopsis schmidti (Marenzeller, 1877)
Aplysinopsis tuberosa Szymanski, 1904
Apohyale perieri (Lucas, 1849)
Apomatus ampulliferus Philippi, 1844
Apomatus globifer Théel, 1878
Apomatus similis Marion & Bobretzky, 1875
Aponuphis grubii (Marenzeller, 1886)
Aponuphis willsiei Cantone & Bellan, 1996
Apoprionospio caspersi (Laubier, 1962)
Apoprionospio pygmaea (Hartman, 1961)
Benthopecten simplex (Perrier, 1881)
Benthopecten spinosissimus (Sladen, 1889)
Benthopecten spinosus Grieg, 1918
Bertiliella bathycola Rieger & Sterrer, 1975
Bhawania goodei Webster, 1884
Bhawania reyssi Katzmann, Laubier & Ramos, 1974
Biemma grimaldii Topsent, 1890
Biemna dautzenbergi Topsent, 1890
Biemna gemmulifera (Breitfuss, 1912)
Biemna grimaldii Topsent, 1890
Biemna parthenopea Pulitzer-Finali, 1978
Armandia cirrhosa Filippi, 1861
Armandia polyophthalma Kükenthal, 1887
Artacama proboscidea Malmgren, 1866
Artemisina arcigera (Schmidt, 1870)
Artemisina foliata (Bowerbank, 1874)
Artemisina hispanica Ferrer-Hernandez, 1917
Artemisina suberitoides Vosmaer, 1885
Artemisina transiens Topsent, 1890
Asabellides siberica [auct.]
Asabellides sibirica (Wirén, 1883)
Asbestopluma bihamatifera (Carter, 1876)
Asbestopluma pennatula (Schmidt, 1875)
Asbestopluma (Asbestopluma) comata Lundbeck, 1905
Asbestopluma (Asbestopluma) furcata Lundbeck, 1905
Asbestopluma (Asbestopluma) gracilis Koltun, 1955
Branchiocerianthus norvegicus Brattström, 1956
Branchiomaldane vincenti Langerhans, 1881
Branchiomma bombyx (Dalyell, 1853)
Branchiomma inconspicua (M. Sars in G.O. Sars, 1872)
Branchiomma infarctum (Krøyer, 1856)
Branchiomma lucullanum (Delle Chiaje, 1828)
Branchiomma moebii Knight-Jones, 1994
Branchiomma spongiarum Knight-Jones, 1994
Branchiomma vesiculosum (Montagu, 1815)
Branchiosyllis cirropunctata (Michel, 1909)
Branchiosyllis exilis (Gravier, 1900)
Branchiosyllis uncinigera (Hartmann-Schröder, 1960)
Brania adspersa Grube, 1868
Brania arminii (Langerhans, 1881)
Brania atokalis (Czerniavsky, 1881)
Brania clavata (Claparède, 1863)
Brania jonssonii Saemundsson, 1918
Brania limbata (Claparède, 1868)
Aquilonastra cepheus (Muller & Troschel, 1842)
Aquiloniella scabra (van Beneden, 1848)
Arabella coeca Fauvel, 1940
Arabella geniculata (Claparède, 1868)
Arabella iricolor (Montagu, 1804)
Arabella longicirrata Hartmann-Schröder, 1979
Arabella (Arabella) iricolor (Montagu, 1804)
Arachnanthus oligopodus (Cerfontaine, 1891)
Araeosoma fenestratum (Thomson, 1872)
Araeosoma violaceum Mortensen, 1903
Arbaciella elegans Mortensen, 1910
Archaster bairdi Verrill, 1882
Archaster bifrons Wyville Thomson, 1873
Archaster christi (Düben & Koren, 1846)
Archaster formosus Verrill, 1884
Archaster grandis Verrill, 1884
Archaster pulcher Perrier, 1881
Archaster robustus Verrill, 1885
Archaster sepitus Verrill, 1885
Archaster simplex Perrier, 1881
Archaster vexillifer Wyville Thomson, 1873
Archeterokrohnia palpifera Casanova, 1986
Archiconchoecia cucullata (Brady, 1902)
Archidice glandularis Langerhans, 1884
Archisoma natans Bigelow, 1911
Bopyrina ocellata (Czerniavsky, 1868)
Bopyrissa diogeni (Popov, 1929)
Bopyrissa fraissei (Carayon, 1943)
Bopyroides cluthae (Scott, 1902)
Bopyrus squillarum Latreille, 1802
Bougainvillia flavida Hartlaub, 1887
Bougainvillia multicilia (Haeckel, 1879)
Bougainvillia muscus (Allman, 1863)
Bougainvillia principis (Steenstrup, 1850)
Antho paucispina Sarà & Siribelli, 1962
Antho (Acarnia) arctica (Koltun, 1959)
Antho (Acarnia) brattegardi van Soest & Stone, 1986
Antho (Acarnia) coriacea (Bowerbank, 1874)
Antho (Acarnia) elegans (Ridley & Dendy, 1887)
Antho (Acarnia) erecta (Ferrer-Hernandez, 1923)
Antho (Acarnia) novizelanica (Ridley & Duncan, 1881)
Antho (Antho) arcitenens (Topsent, 1892)
Antho (Antho) dichotoma (Linnaeus, 1767)
Antho (Antho) granditoxa Picton & Goodwin, 2007
Antho (Antho) inconstans (Topsent, 1925)
Antho (Antho) paradoxa (Babiç, 1922)
Antho (Antho) paucispina Sarà & Siribelli, 1962
Antho (Plocamia) erecta (Ferrer-Hernandez, 1923)
Antho (Plocamia) novizelanica (Ridley & Duncan, 1881)
Antinoella badia
Antinoella finmarchica (Malmgren, 1867)
Antinoella sarsi (Kinberg in Malmgren, 1866)
Antonbruunia viridis Hartman & Boss, 1965
Bathydorus servatus Topsent, 1927
Bathyeliasona abyssicola (Fauvel, 1913)
Bathyeliasona kirkegaardi (Uschakov, 1971)
Bathyphysa conifera (Studer, 1878)
Bathysalenia goesiana (Lovén, 1874)
Bathyvermilia eliasoni (Zibrowius, 1970)
Batzella inops (Topsent, 1891)
Capitella capitata (Fabricius, 1780)
Capitella hermaphrodita Boletzky & Dohle, 1967
Capitella minima Langerhans, 1881
Capitellethus dispar (Ehlers, 1907)
Capitellides giardi Mesnil, 1897
Capitomastus minima (Langerhans, 1881)
Capitomastus minimus (Langerhans, 1881)
Athelgue intermediaire Hesse, 1876
Athelgue lorifera Hesse, 1876
Atherospio disticha Mackie & Duff, 1986
Atherospio guillei (Laubier & Ramos, 1974)
Athorybia rosacea (Forsskål, 1775)
Atlanta quoyana Souleyet, 1852
Atlanta rosea Souleyet, 1852
Callyspongia subcornea Griessinger, 1971
Calocalanus tenuis Farran, 1926
Calthropella geodioides (Carter, 1876)
Calthropella inopinata Pulitzer-Finali, 1983
Calthropella pathologica (Schmidt, 1868)
Calthropella recondita Pulitzer-Finali, 1972
Calthropella simplex Sollas, 1888
Calthropella stelligera (Schmidt, 1868)
Calthropella (Calthropella) durissima Topsent, 1892
Calthropella (Calthropella) geodioides (Carter, 1876)
Calthropella (Calthropella) inopinata Pulitzer-Finali, 1983
Calthropella (Calthropella) pathologica (Schmidt, 1868)
Calthropella (Calthropella) simplex Sollas, 1888
Calthropella (Corticellopsis) recondita Pulitzer-Finali, 1983
Calthropella (Corticellopsis) stelligera (Schmidt, 1868)
Calveria fenestrata Thomson, 1872
Calveria hystrix Thomson, 1872
Calveriosoma fenestratum (Thomson, 1872)
Calveriosoma hystrix (Thomson, 1872)
Calycaster monoecus Perrier, 1891
Calymne relicta Thomson, 1877
Calyx nicaeensis (Risso, 1826)
Calyx nicaensis (Risso, 1826)
Calyx tufa (Ridley & Dendy, 1886)
Caminella loricata Lendenfeld, 1894
Caminus vulcani Schmidt, 1862
Axingella perlucida (Topsent, 1896)
Axinyssa aurantiaca (Schmidt, 1864)
Axinyssa digitata (Cabioch, 1968)
Axinyssa papillosa (Sarà & Siribelli, 1960)
Axionice flexuosa (Grube, 1860)
Axionice maculata (Dalyell, 1853)
Axiothella catenata (Malmgren, 1865)
Axiothella constricta (Claparède, 1869)
Baeria johnstoni (Carter, 1871)
Baeria nivea (Grant, 1826)
Baffinia hesslei (Annenkova, 1924)
Balanophyllia (Balanophyllia) thalassae Zibrowius, 1980
Baldia johnstoni Garwood & Bamber, 1988
Bargmannia amoena Pugh, 1999
Bargmannia elongata Totton, 1954
Bargmannia lata Mapstone, 1998
Bassia bassensis (Quoy & Gaimard, 1833)
Bathybiaster vexillifer (W. Thomson, 1873)
Carobia lanceoligera Czerniavsky, 1882
Caryophyllia (Caryophyllia) abyssorum Duncan, 1873
Caryophyllia (Caryophyllia) alberti Zibrowius, 1980
Caryophyllia (Caryophyllia) calveri Duncan, 1873
Caryophyllia (Caryophyllia) diomedeae Marenzeller, 1904
Caryophyllia (Caryophyllia) sarsiae Zibrowius, 1974
Castalia multipapillata Théel, 1879
Caulaster pedunculatus Perrier, 1882
Caulaster sladeni Perrier, 1885
Caulleriella alata (Southern, 1914)
Caulleriella bioculata (Keferstein, 1862)
Caulleriella caputesocis
Caulleriella killariensis (Southern, 1914)
Caulleriella parva Gillandt, 1979
Caulleriella serrata
Biemna peachii (Bowerbank, 1866)
Biemna peracuta Topsent, 1927
Biemna tenuisigma Pulitzer-Finali, 1978
Bipalponephtys neotena (Noyes, 1980)
Bispira crassicornis (Sars, 1851)
Bispira fabricii (Krøyer, 1856)
Bispira mariae Lo Bianco, 1893
Bispira melanostigma (Schmarda, 1861)
Bispira volutacornis (Montagu, 1804)
Boccardia polybranchia (Haswell, 1885)
Boccardia proboscidea Hartman, 1940
Boccardia semibranchiata Guérin, 1990
Boccardiella ligerica (Ferronnière, 1898)
Ceratocephale andaman Hylleberg & Natewathana, 1988
Ceratocephale loveni Malmgren, 1867
Ceratocephale pacifica (Hartman, 1960)
Ceratocymba dentata (Bigelow, 1918)
Ceratocymba sagittata (Quoy & Gaimard, 1827)
Ceratonereis anoculata Amoureux, 1982
Ceratonereis brunnea Langerhans, 1884
Ceratonereis costae (Grube, 1840)
Ceratonereis fallax (Quatrefages, 1866)
Ceratonereis hircinicola (Eisig, 1870)
Ceratonereis mirabilis Kinberg, 1865
Ceratonereis vittata Langerhans, 1884
Ceratonereis (Composetia) anoculata (Amoureux, 1982)
Ceratonereis (Composetia) costae (Grube, 1840)
Ceratonereis (Composetia) hircinicola (Eisig, 1870)
Ceratonereis (Composetia) vittata Langerhans, 1884
Cerbaris alborani (Boury-Esnault, Pansini & Uriz, 1994)
Cerbaris implicatus (Pulitzer-Finali, 1983)
Cerbaris torquatus Topsent, 1898
Cerianthus lloydi Gosse, 1859
Asteracanthion africanus Müller & Troschel, 1842
Asteracanthion albulus Stimpson, 1853
Asteracanthion groenlandica Steenstrup, 1857
Asteracanthion lincki Müller & Troschel, 1842
Asteracanthion mülleri M. Sars, 1846
Asteracanthion palaeocrystallus Duncan & Sladen, 1877
Asteracanthion polaris Müller & Troschel, 1842
Asteracanthion problema Steenstrup, 1855
Bucephalus minimus (Stossich, 1887)
Bugula dentata (Lamouroux, 1816)
Bugula fastigiata Kluge, 1929
Bugula serrata (Lamarck, 1816)
Buprorus loveni Thorell, 1859
Buprorus nordgaardi Sars G.O., 1921
Bushiella (Bushiella) evoluta (Bush, 1905)
Bushiella (Bushiella) verruca (Fabricius in Mörch, 1863)
Bushiella (Jugaria) kofiadii Rzhavsky, 1988
Bylgides acutisetis Loshamn, 1981
Bylgides annenkovae Pettibone, 1993
Bylgides elegans (Théel, 1879)
Bylgides groenlandicus (Malmgren, 1867)
Bylgides promamme (Malmgren, 1867)
Bylgides sarsi (Kinberg in Malmgren, 1866)
Caberea ligata Jullien, 1882
Cacochalina irregularis Czerniavsky, 1880
Cacospongia carduelis Schmidt, 1864
Cacospongia cavernosa Schmidt, 1862
Cacospongia procumbens Poléjaeff, 1884
Cacospongia proficens Pulitzer-Finali & Pronzato, 1981
Cacospongia scalaris Schmidt, 1862
Cheiraster (Barbadosaster) echinulatus (Perrier, 1875)
Cheiraster (Cheiraster) sepitus (Verrill, 1885)
Chelonaplysilla arenosa (Topsent, 1925)
Brania pusilla (Dujardin, 1851)
Brania swedmarki Gidholm, 1962
Brania tenuicirrata (Claparède, 1864)
Breitfussia schulzei (Breitfuss, 1896)
Brementia balneolensis Chatton & Brément, 1915
Brevicirrosyllis gorringensis (Hartmann-Schröder, 1977)
Brisaster fragilis (Düben & Koren, 1844)
Brisinga coronata G.O. Sars, 1872
Brisinga edwardsi Perrier, 1882
Brisinga elegans Perrier, 1885
Brisinga elegans Verrill, 1884
Brisinga endecacnemos Asbjørnsen, 1856
Brisinga hirsuta Perrier, 1894
Brisinga mediterranea Perrier, 1885
Brisinga robusta Perrier, 1885
Brisinga semicoronata Perrier, 1885
Brisingella coronata (Sars G.O., 1872)
Brisingella mediterranea (Perrier, 1885)
Brissopsis atlantica Mortensen, 1907
Brissopsis lyrifera (Forbes, 1841)
Brissopsis parma Val., 18??
Brissus fragilis Düben & Koren, 1844
Brissus lyrifer Forbes, 1841
Brissus pulvinatus Philippi, 1845
Bubaris carcisis Vacelet, 1969
Bubaris simplicima (Bowerbank, 1874)
Bubaris sosia Topsent, 1904
Bubaris subtyla Pulitzer-Finali, 1983
Bubaris vermiculata (Bowerbank, 1866)
Bubaropsis alborani Boury-Esnault, Pansini & Uriz, 1994
Chloeia venusta Quatrefages, 1866
Chloeia viridis Schmarda, 1861
Chloenopsis atlantica (McIntosh, 1885)
Chondraster grandis (Verrill, 1878)
Bouillonactinia hooperi (Sigerfoos, 1899)
Bouillonia cornucopia (Bonnevie, 1898)
Brachyscelus macrocephalus Stephensen, 1925
Brada granulosa Hansen, 1882
Brada incrustata Støp-Bowitz, 1948
Brada inhabilis (Rathke, 1843)
Brada rugosa (Hansen, 1882)
Brada villosa (Rathke, 1843)
Branchiocerianthus italicus Stechow, 1921
Chaetaster hermanni Müller & Troschel, 1842
Chaetaster longipes Sladen, 1889
Chaetaster nodosus Perrier, 1875
Chaetoparia nilssoni Malmgren, 1867
Chaetopterus norvegicus M. Sars, 1835
Chaetopterus sarsii Boeck in Sars, 1860
Chaetopterus variopedatus (Renier, 1804)
Chaetosyllis oerstedi Malmgren, 1867
Chaetozone benthaliana McIntosh, 1885
Chaetozone caputesocis (Saint-Joseph, 1894)
Chaetozone carpenteri McIntosh, 1911
Chaetozone christiei Chambers, 2000
Chaetozone gibber Woodham & Chambers, 1994
Chaetozone jubata Chambers & Woodham, 2003
Chaetozone macrophthalma Langerhans, 1881
Chaetozone setosa Malmgren, 1867
Chaetozone vivipara (Christie, 1984)
Chaetozone zetlandica McIntosh, 1911
Chalina arbuscula Verrill, 1873
Chalina gracilenta Bowerbank, 1866
Chalina groenlandica Fristedt, 1887
Chalina spatula Lundbeck, 1902
Chalina vega Fristedt, 1887
Chalina zostericola Topsent, 1892
Chalinopsilla tuba Lendenfeld, 1889
Axinella barleei (Bowerbank, 1866)
Axinella blanca Koltun, 1959
Axinella brondstedi Bergquist, 1970
Axinella calyciformis (Lamarck, 1814)
Axinella cannabina (Esper, 1794)
Axinella cinnamomea (Nardo, 1833)
Axinella dissimilis (Bowerbank, 1866)
Axinella egregia sensu Topsent, 1892
Axinella estacioi Carballo & Garcia-Gomez, 1995
Axinella flustra (Topsent, 1892)
Axinella guiteli Topsent, 1896
Axinella hirondellei (Topsent, 1890)
Axinella hispida (Montagu, 1814)
Axinella hispida Koltun, 1959
Axinella infundibuliformis (Linnaeus, 1759)
Axinella macrostyla Babic, 1922
Axinella mahonensis Ferrer-Hernandez, 1916
Caenopedina cubensis A. Agassiz, 1869
Calamorhynchus pellucidus Streets, 1878
Calamyzas amphictenicola Arwidsson, 1932
Caligus apodus (Brian, 1924)
Calizonella lepidota
Calliaxina punica (de Saint Laurent & Manning, 1982)
Callipallene cinto Müller & Krapp, 2009
Callipallene minuta Müller & Krapp, 2009
Cinachyra australiensis sensu Burton, 1936
Cinachyra cavernosa (Lamarck, 1815 sensu Tsurnamal, 1969)
Cinachyrella cavernosa (sensu Tsurnamal, 1969)
Ciocalapata almae Carballo, Uriz & Garcia-Gomez, 1996
Ciocalypta hyalina (Pulitzer-Finali, 1978)
Circeis armoricana Saint-Joseph, 1894
Circeis spirillum (Linnaeus, 1758)
Cirratulus abyssorum Hansen, 1878
Cirratulus borealis Grube, 1851
Cirratulus caudatus Levinsen, 1893
Cirratulus chrysoderma Claparède, 1869
Cirratulus cirratus (O. F. Müller, 1776)
Cirratulus filiformis Keferstein, 1862
Cirratulus glandularis (Langerhans, 1884)
Cirratulus incertus McIntosh, 1916
Cirriformia chrysoderma (Claparède, 1869)
Cirriformia filigera (Delle Chiaje, 1828)
Cirriformia semicincta (Ehlers, 1905)
Cirriformia tentaculata (Montagu, 1808)
Cirrineris incertus Fauvel, 1936
Cirrophorus branchiatus Ehlers, 1908
Cirrophorus furcatus (Hartman, 1957)
Cirrophorus lyriformis (Annenkova, 1934)
Cistenides granulata (Linnaeus, 1767)
Cistenides hyperborea Malmgren, 1866
Cladocarpus bonnevieae Jäderholm, 1909
Cladocarpus cornutus Verrill, 1879
Cladocarpus ramuliferus (Allman, 1874)
Cladocora caespitosa (Linnaeus, 1767)
Cladocroce fibrosa (Topsent, 1890)
Cladocroce parenchyma (Lundbeck, 1902)
Cladocroce spathiformis Topsent, 1904
Cladocroce spatula (Lundbeck, 1902)
Cladocroce ventilabrum (Fristedt, 1887)
Cladorhiza arctica Koltun, 1959
Cladorhiza bathycrinoides Koltun, 1955
Cladorhiza corticocancellata Carter, 1876
Cladorhiza gelida Lundbeck, 1905
Cladorhiza grimaldii Topsent, 1909
Cladorhiza nobilis Fristedt, 1887
Cladorhiza nordenskioeldi Fristedt, 1887
Cladorhiza oxeata Lundbeck, 1905
Cladorhiza tenuisigma Lundbeck, 1905
Clathria abyssorum (Carter, 1876)
Clathria anancora (Topsent, 1904)
Clathria anchorata (Carter, 1874)
Clathria angularis (Sarà & Siribelli, 1960)
Clathria armata (Bowerbank, 1862)
Clathria ascendens (Cabioch, 1968)
Clathria assimilis Topsent, 1925
Clathria atrasanguinea (Bowerbank, 1862)
Clathria barleei (Bowerbank, 1866)
Clathria basifixa (Topsent, 1913)
Clathria bitoxa (Burton, 1930)
Clathria campecheae Hooper, 1996
Clathria cleistochela Topsent, 1925
Clathria compressa (Bowerbank, 1875)
Clathria coralloides (Scopoli, 1772)
Clathria corallorhizoides Fristedt, 1887
Clathria ctenichela (Alander, 1942)
Clathria dianae (Schmidt, 1875)
Clathria ditoxa (Stephens, 1916)
Clathria duplex Sarà, 1958
Clathria elliptichela (Alander, 1942)
Clathria fallax (Bowerbank, 1866)
Clathria frogeti (Vacelet, 1969)
Clathria gradalis Topsent, 1925
Clathria haplotoxa (Topsent, 1928)
Clathria heterotoxa (Hentschel, 1929)
Clathria hjorti (Arnesen, 1920)
Clathria jolicoeuri (Topsent, 1892)
Clathria laciniosa (Bowerbank in Norman, 1869)
Clathria laevis (Bowerbank, 1866)
Clathria levii (Sarà & Siribelli, 1960)
Clathria macrochela (Lévi, 1960)
Clathria normani (Burton, 1930)
Campanularia crenata Allman, 1876
Campanularia speciosus Clark, 1877
Campanularia verticillata (Linnaeus, 1758)
Cancricepon elegans Giard & Bonnier, 1887
Cancricepon pilula Giard & Bonnier, 1887
Canda ligata (Jullien, 1882)
Candelabrum cocksi (Cocks, 1854)
Candelabrum cocksii (Cocks, 1854)
Candelabrum minutum (Bonnevie, 1898)
Candelabrum mitra (Bonnevie, 1898)
Candelabrum verrucosum (Bonnevie, 1898)
Candona neglecta G.O. Sars, 1887
Cantabrina erecta Ferrer-Hernandez, 1914
Clathria (Clathria) hjorti (Arnesen, 1920)
Clathria (Clathria) intermedia (Burton, 1930)
Clathria (Clathria) marissuperi Pulitzer-Finali, 1983
Clathria (Clathria) microchela (Stephens, 1916)
Clathria (Clathria) plurityla Pulitzer-Finali, 1983
Clathria (Clathria) prolifera (Ellis & Solander, 1786)
Clathria (Clathria) toxistricta Topsent, 1925
Clathria (Clathria) toxistyla (Sarà, 1959)
Clathria (Clathria) toxivaria (Sarà, 1959)
Clathria (Cornulotrocha) cheliradians (Topsent, 1927)
Clathria (Microciona) angularis (Sarà & Siribelli, 1960)
Clathria (Microciona) armata (Bowerbank, 1862)
Clathria (Microciona) ascendens (Cabioch, 1968)
Clathria (Microciona) assimilis Topsent, 1925
Clathria (Microciona) bitoxa (Burton, 1930)
Clathria (Microciona) brondstedi Hooper, 1996
Clathria (Microciona) campecheae Hooper, 1996
Clathria (Microciona) claudei Hooper, 1996
Clathria (Microciona) cleistochela (Topsent, 1925)
Clathria (Microciona) ctenichela (Alander, 1942)
Clathria (Microciona) dianae (Schmidt, 1875)
Clathria (Microciona) ditoxa (Stephens, 1916)
Clathria (Microciona) duplex Sarà, 1958
Clathria (Microciona) elliptichela (Alander, 1942)
Clathria (Microciona) fallax (Bowerbank, 1866)
Clathria (Microciona) gradalis Topsent, 1925
Clathria (Microciona) haplotoxa (Topsent, 1928)
Clathria (Microciona) heterotoxa (Hentschel, 1929)
Clathria (Microciona) laevis (Bowerbank, 1866)
Clathria (Microciona) levii (Sarà & Siribelli, 1960)
Clathria (Microciona) longispiculum (Carter, 1876)
Clathria (Microciona) macrochela (Lévi, 1960)
Clathria (Microciona) normani (Burton, 1930)
Clathria (Microciona) osismica (Cabioch, 1968)
Clathria (Microciona) poecilosclera (Sarà & Siribelli, 1960)
Clathria (Microciona) primitiva (Koltun, 1955)
Clathria (Microciona) strepsitoxa (Hope, 1889)
Clathria (Microciona) tenuissima (Stephens, 1916)
Clathria (Microciona) toximajor Topsent, 1925
Clathria (Microciona) toxirecta (Sarà & Siribelli, 1960)
Clathria (Microciona) toxitenuis Topsent, 1925
Clathria (Microciona) toxivaria (Sarà, 1959)
Clathria (Microciona) tunisiae Hooper, 1996
Clathria (Paresperia) anchorata (Carter, 1874)
Clathria (Thalysias) hechteli Hooper, 1996
Clathria (Thalysias) jolicoeuri (Topsent, 1892)
Clathria (Thalysias) tricurvatifera (Carter, 1876)
Clathrina ascandroides Borojevic, 1971
Clathrina blanca (Miklucho-Maclay, 1868)
Clathrina canariensis (Miklucho-Maclay, 1868)
Caprella scaura Templeton, 1836
Cliona pontica Czerniavsky, 1878
Cliona schmidti (Ridley, 1881)
Cliona stationis (Nassonow, 1883)
Cliona thoosina Topsent, 1888
Cliona topsenti (Lendenfeld, 1898)
Cliona tremitensis Sarà, 1961
Cliona typica (Nardo, 1833)
Cliona vastifica Hancock, 1849
Cliona viridis (Schmidt, 1862)
Cliothosa hancocki (Topsent, 1888)
Cliothosa ramosa (Lendenfeld, 1898)
Clymene lophoseta Orlandi, 1898
Clymenella cincta (Saint-Joseph, 1894)
Clymenella torquata (Leidy, 1855)
Clymenura borealis (Arwidsson, 1906)
Clymenura clypeata (Saint-Joseph, 1894)
Clymenura johnstoni (McIntosh, 1915)
Clymenura lankesteri (McIntosh, 1885)
Clymenura leiopygos (Grube, 1860)
Clymenura polaris (Théel, 1879)
Clymenura tenuis (Day, 1957)
Clymenura tricirrata (Arwidsson, 1906)
Clymenura (Cephalata) lankesteri (McIntosh, 1885)
Clypeoniscus hanseni Giard & Bonnier, 1895
Clytia brunescens (Bigelow, 1904)
Clytia discoida (Mayer, 1900)
Clytia gracilis (Sars, 1850)
Clytia hemisphaerica (Linnaeus, 1767)
Clytia maccradyi (Brooks, 1888)
Clytia macrogonia Bouillon, 1984
Clytia mccradyi (Brooks, 1888)
Clytia noliformis (McCrady, 1859) sensu Calder, 1991
Clytia viridicans (Leuckart, 1956)
Codonium proliferum (Forbes, 1848)
Chelonaplysilla erecta (Row, 1911)
Chelonaplysilla incrustans (Carter, 1876)
Chelonaplysilla noevus (Carter, 1876)
Chelonaplysilla psammophila (Topsent, 1928)
Chelophyes contorta (Lens & van Riemsdijk, 1908)
Chirimia biceps (M. Sars, 1861)
Chitinopoma groenlandica (Mörch, 1863)
Chitinopoma serrula (Stimpson, 1854)
Cradoscrupocellaria bertholletii (Audouin, 1826)
Cradoscrupocellaria macrorhyncha (Gautier, 1962)
Cradoscrupocellaria reptans (Linnaeus, 1758)
Crambe crambe (Schmidt, 1862)
Craniella azorica (Topsent, 1913)
Craniella disigma Topsent, 1904
Craniella longipilis (Topsent, 1904)
Craniella polyura (Schmidt, 1870)
Craniella repens Sarà, 1958
Craniella zetlandica (Carter, 1872)
Craspedacusta sowerbii Lankester, 1880
Crella akraleitae (Brøndsted, 1932)
Crella alba (Vacelet, 1969)
Crella albula (Bowerbank, 1866)
Crella atra (Topsent, 1890)
Crella carnosa (Topsent, 1904)
Crella digitifera (Lévi, 1959)
Crella dispar (Topsent, 1927)
Crella donsi Burton, 1931
Crella fallax (Topsent, 1892)
Crella gerzensteini (Swartschevsky, 1906)
Crella gracilis (Alander, 1942)
Crella guernei (Topsent, 1890)
Crella hanseni (Topsent, 1890)
Crella hospitalis (Schmidt, 1870)
Crella jaegerskioeldi Alander, 1937
Crella linguifera (Topsent, 1890)
Crella mammillata (Arnesen, 1903)
Crella mollior Topsent, 1925
Crella nodulosa Sarà, 1959
Crella papillosa (Schmidt, 1870)
Crella pedunculata (Topsent, 1890)
Crella pertusa (Topsent, 1890)
Crella plana Picton & Goodwin, 2007
Crella polymastia (Thiele, 1903)
Crella pulvinar (Schmidt, 1868)
Crella pyrula (Carter, 1876)
Crella richardi (Topsent, 1890)
Crella ridleyi (Topsent, 1890)
Crella schottlaenderi (Arndt, 1913)
Crella schottlanderi (Arndt, 1913)
Crella sigmata Topsent, 1925
Crella topsenti (Babiç, 1922)
Crella (Crella) elegans (Schmidt, 1862)
Crella (Crella) mollior Topsent, 1925
Crella (Crella) papillosa (Schmidt, 1870)
Crella (Grayella) polymastia (Thiele, 1903)
Crella (Pytheas) akraleitae (Brøndsted, 1932)
Crella (Pytheas) alba (Vacelet, 1969)
Crella (Pytheas) atra (Topsent, 1890)
Crella (Pytheas) digitifera (Lévi, 1959)
Crella (Pytheas) jaegerskioeldi Alander, 1937
Crella (Pytheas) plana Picton & Goodwin, 2007
Crella (Pytheas) schottlaenderi (Arndt, 1913)
Crella (Pytheas) sigmata Topsent, 1925
Crella (Yvesia) dispar (Topsent, 1927)
Crella (Yvesia) fallax (Topsent, 1890)
Crella (Yvesia) gelida (Lundbeck, 1910)
Crella (Yvesia) gracilis (Alander, 1942)
Crella (Yvesia) guernei (Topsent, 1890)
Corallistes bowerbankii (Johnson, 1863)
Corbicula fluminea (O. F. Müller, 1774)
Cordagalma cordiformis Totton, 1932
Cordagalma ordinata (Haeckel, 1888)
Cordylophora inkermanica Marfenin, 1983
Cordylophora pusilla Motz-Kossowska, 1905
Cornulotrocha cheliradians Topsent, 1927
Cornulum cheliradians (Topsent, 1927)
Coronaster antonii Perrier, 1894
Coronaster volsellatus (Sladen, 1889)
Corticium abyssi Carter, 1873
Corticium bowerbanki Sarà, 1960
Corticium parasiticum Carter, 1876
Corticium reductum Pulitzer-Finali, 1983
Corticium stelligerum Schmidt, 1868
Corticium topsenti Pouliquen, 1972
Corybas lobatus (Montagu, 1814)
Corycaeus flaccus Giesbrecht, 1891
Corycaeus furcifer Claus, 1863
Corycaeus giesbrechti Dahl F., 1894
Corycaeus latus Dana, 1849
Corycaeus limbatus Brady, 1883
Corycaeus ovalis Claus, 1863
Corycaeus typicus (Krøyer, 1849)
Corymorpha abyssalis Broch, 1910
Corymorpha annulata (Kramp, 1928)
Corymorpha annulicornis M. Sars, 1859
Corymorpha appellöfi Bonnevie, 1901
Corymorpha bigelowi (Maas, 1905)
Corymorpha forbesii (Mayer, 1894)
Corymorpha nutans M. Sars, 1835
Corymorpha petalina (Margulis, 1989)
Corymorpha sarsii Steenstrup, 1855
Coryne brevicornis Bonnevie, 1898
Coryne filiformis (Rees, 1936)
Clathrina cerebrum (Haeckel, 1872)
Clathrina clathrus (Schmidt, 1864)
Clathrina contorta (Bowerbank, 1866)
Clathrina corallicola Rapp, 2006
Clathrina coriacea (Montagu, 1814)
Clathrina darwini (Haeckel, 1870)
Clathrina jorunnae Rapp, 2006
Clathrina lacunosa (Johnston, 1842)
Clathrina minoricensis (Lackschewitsch, 1896)
Clathrina multiformis (Breitfuss, 1898)
Clathrina nanseni (Breitfuss, 1896)
Clathrina olynthus Borojevic & Boury-Esnault, 1987
Clathrina primordialis (Haeckel, 1872)
Clathrina sulphurea Gray, 1867
Clausophyes galeata Lens & van Riemsdijk, 1908
Clausophyes massiliana Patriti, 1969
Clausophyes ovata (Keferstein & Ehlers, 1860)
Clava leptostyla L. Agassiz, 1862
Clava multicornis (Forsskål, 1775)
Clava squamata (Müller, 1776)
Clavactinia serrata (Kramp, 1943)
Clavodesia biradiculata Harmelin & d'Hondt, 1992
Clavodesia clavula (Hayward, 1978)
Clavodorum adriaticum Katzmann, 1973
Clavodorum fauchaldi Desbruyères, 1980
Cliona abyssorum Carter, 1874
Cliona albicans Volz, 1939
Cliona alderi Hancock, 1849
Cliona angulata Hancock, 1849
Cliona caledoniae van Soest & Beglinger, 2009
Cliona celata Grant, 1826
Cliona copiosa Sarà, 1959
Cliona levispira Topsent, 1898
Demonax brachychona (Claparède, 1870)
Demonax cambrensis Knight-Jones & Walker, 1985
Demonax langerhansi Knight-Jones, 1983
Demonax tommasi Giangrande, 1994
Demonax torulis Knight-Jones & Walker, 1985
Dendoricella flabelliformis (Hansen, 1885)
Dendoryx certa Topsent, 1892
Dendoryx dentata Topsent, 1904
Dendoryx iotrochotina Topsent, 1892
Dendoryx luciensis Topsent, 1888
Dendoryx pectinata Topsent, 1890
Dendoryx reses Topsent, 1892
Dendoryx thompsoni (Bowerbank, 1866)
Dendrectilla tremitensis Pulitzer-Finali, 1983
Dendroxea adumbrata Corriero, Scalera-Liaci & Pronzato, 1996
Dendroxea lenis (Topsent, 1892)
Dendroxea pseudodidiscoides Corriero, Scalera-Liaci & Pronzato, 1996
Dercitancorina lesinensis (Lendenfeld, 1894)
Dercitus bucklandi (Bowerbank, 1858)
Dercitus niger Carter, 1871
Dercitus plicatus (Schmidt, 1868)
Dercitus (Dercitus) bucklandi (Bowerbank, 1858)
Dercitus (Stoeba) dissimilis (Sarà, 1959)
Dercitus (Stoeba) lesinensis (Lendenfeld, 1894)
Dercitus (Stoeba) plicatus (Schmidt, 1868)
Desdemona ornata Banse, 1957
Deshayesorchestia deshayesii (Audouin, 1826)
Desmacella campechiana (Topsent, 1889)
Desmacella corrugata (Bowerbank, 1866)
Desmacella grimaldi (Topsent, 1890)
Desmacella grimaldii (Topsent, 1890)
Desmacella hamifera Lundbeck, 1902
Desmacella informis (Stephens, 1916)
Desmacella infundibuliformis (Vosmaer, 1885)
Crella (Yvesia) hanseni (Topsent, 1890)
Crella (Yvesia) linguifera (Topsent, 1890)
Crella (Yvesia) mammillata (Arnesen, 1903)
Crella (Yvesia) nodulosa Sarà, 1959
Crella (Yvesia) pertusa (Topsent, 1890)
Crella (Yvesia) richardi (Topsent, 1890)
Crella (Yvesia) ridleyi (Topsent, 1890)
Crella (Yvesia) topsenti (Babiç, 1922)
Crellastrina alecto (Topsent, 1898)
Crellomima derma Hentschel, 1929
Crellomima imparidens Rezvoj, 1925
Crellomima incrustans Hentschel, 1929
Crenaster marionis Perrier, 1885
Crenaster mollis Perrier, 1885
Crenaster semispinosus Perrier, 1894
Cribella caudani Koehler, 1895
Cribrella abyssalis Perrier, 1894
Cribrella biscayensis Koehler, 1895
Cribrella hamigera Schmidt, 1862
Cribrella oculata Forbes, 1841
Cribrella papillosa Schmidt, 1870
Cribrella pectinata Verrill, 1894
Cribrella sanguinolenta (O.F. Müller, 1776)
Cribrochalina variabilis Vosmaer, 1882
Dictyocylindrus anchorata Carter, 1874
Dictyocylindrus fascicularis Bowerbank, 1866
Dictyocylindrus hispida (Montagu, 1814)
Dictyocylindrus rectangula Bowerbank, 1874
Dictyocylindrus setosus Bowerbank, 1873
Dictyocylindrus subdola (Bowerbank, 1866)
Dictyonella alonsoi Carballo, Uriz & Garcia-Gomez, 1996
Dictyonella incisa (Schmidt, 1880)
Dictyonella madeirensis (Topsent, 1928)
Dictyonella obtusa (Schmidt, 1862)
Chondrocladia alaskensis Lambe, 1895
Chondrocladia pulchra Lambe, 1895
Chondrocladia (Chondrocladia) burtoni Tendal, 1973
Chondrocladia (Chondrocladia) virgata Thomson, 1873
Chone acustica (Claparède, 1869)
Chone arenicola Langerhans, 1881
Chone collaris Langerhans, 1881
Chone duneri Malmgren, 1867
Chone fauveli McIntosh, 1916
Chone filicaudata Southern, 1914
Chone infundibuliformis Krøyer, 1856
Chone ingeloreae (Plate, 1995)
Chone longiseta Giangrande, 1992
Chone longocirrata M. Sars in G.O. Sars, 1872
Chone paucibranchiata (Krøyer, 1856)
Chrysopetalum caecum Langerhans, 1880
Chrysopetalum debile (Grube, 1855)
Chunaster scapanephorus Ludwig, 1907
Chuniphyes moserae Totton, 1954
Chuniphyes multidentata Lens & van Riemsdijk, 1908
Cidaris abyssicola (A. Agassiz, 1869)
Cidaris cidaris (Linnaeus, 1758)
Cidaris (Diadema) antillarum Philippi, 1845
Cidaris (Diadema) longispina Philippi, 1845
Cuspidella quadridentatum Hincks, 1874
Cyamon spinispinosum (Topsent, 1904)
Cyclostremiscus dariae Liuzzi & Stolfa-Zucchi, 1979
Cydonium intutum Topsent, 1892
Cydonium normani Sollas, 1888
Dragmatella aberrans (Topsent, 1890)
Dragmatyle lictor Topsent, 1904
Drieschia pelagica Michaelsen, 1892
Drilonereis brattstroemi Fauchald, 1972
Drilonereis filum (Claparède, 1868)
Coryne graeffei Jickeli, 1883
Coryne muscoides (Linnaeus, 1761)
Coryne producta (Wright, 1858)
Coryne pusilla Gaertner, 1774
Coryne vanbenedeni Hincks, 1868
Corynocephalus albomaculatus Levinsen, 1884
Coscinasterias tenuispina (Lamarck, 1816)
Coscinasterias (Stolasterias) neglecta Perrier, 1891
Coscinoderma confragosum Poléjaeff, 1884
Coscinoderma sporadense Voultsiadou-Koukoura, van Soest & Koukouras, 1991
Cossura coasta Kitamori, 1960
Cossura delta Reish, 1958
Cossura longocirrata Webser & Benedict, 1887
Cossura pygodactylata Jones, 1956
Cossura soyeri Laubier, 1964
Diplophryxus alveolatus Bourdon, 1981
Diplopteraster multipes (M. Sars, 1866)
Dipolydora armata (Langerhans, 1880)
Dipolydora caulleryi (Mesnil, 1897)
Dipolydora giardi (Mesnil, 1896)
Dipolydora langerhansi (Mesnil, 1896)
Dipolydora quadrilobata (Jacobi, 1883)
Dipolydora rogeri (Martin, 1996)
Dipolydora socialis (Schmarda, 1861)
Dipurena dolichogaster Haeckel, 1864
Dipurena ophiogaster Haeckel, 1879
Dipurena simulans Bouillon, 1965
Discorhabdella tuberosocapitatum (Topsent, 1890)
Dispio uncinata Hartman, 1951
Ditela nitens Schmidt, 1862
Diurodrilus benazzii Gerlach, 1952
Diurodrilus dohrni Gerlach, 1953
Diurodrilus minimus Remane, 1925
Diurodrilus subterraneus Remane, 1934
Clathria oroides Schmidt, 1864
Clathria osismica (Cabioch, 1968)
Clathria oxeifera Ferrer-Hernandez, 1921
Clathria palmatichela (Topsent, 1928)
Clathria plurityla Pulitzer-Finali, 1983
Clathria poecilosclera (Sarà & Siribelli, 1960)
Clathria primitiva (Koltun, 1955)
Clathria robusta Koltun, 1959
Clathria seriata (sensu Johnston, 1842)
Clathria spinarcus (Carter & Hope, 1889)
Clathria strepsitoxa (Hope, 1889)
Clathria toximajor Topsent, 1925
Clathria toxirecta (Sarà & Siribelli, 1960)
Clathria toxistricta Topsent, 1925
Clathria toxistyla (Sarà, 1959)
Clathria toxitenuis Topsent, 1925
Clathria toxivaria (Sarà, 1959)
Clathria tricurvatifera (Carter, 1876)
Clathria (Clathria) acanthotoxa (Stephens, 1916)
Clathria (Clathria) anchorata (Carter, 1874)
Clathria (Clathria) barleei (Bowerbank, 1866)
Clathria (Clathria) borealis Hooper, 1996
Clathria (Clathria) coralloides (Scopoli, 1772)
Clathria (Clathria) depressa Sarà & Melone, 1966
Clathria (Clathria) foliacea Topsent, 1889
Clathria (Clathria) frondiculata (Schmidt, 1864)
Cypridina (Vargula) norvegica Baird, 1860
Cytaeis pusilla Gegenbaur, 1856
Cytaeis schneideri (Motz-Kossowska, 1905)
Echinodictyum lacazei Topsent, 1892
Echinogammarus apfelbecki (S. Karaman, 1931)
Echinosigra paradoxa (Mortensen, 1905)
Echinosigra phiale (Thomson, 1873)
Echinostylinos glomeris (Topsent, 1904)
Echinostylinos reticulatus Topsent, 1927
Echinostylinos schmidti (Arnesen, 1903)
Echinus acutus Lamarck, 1816
Echinus affinis Mortensen, 1903
Echinus alexandri Danielssen & Koren, 1883
Echinus aurantiacus Blainville, 1825
Echinus cordatus Pennant, 1777
Echinus depressus G.O. Sars, 1871
Echinus dröbachiensis O.F. Müller, 1776
Echinus elegans Düben & Koren, 1844
Echinus flemingii Forbes, 1841
Echinus globiformis Lamarck, 1816
Echinus granularis Say, 1827 non Lamarck, 1816
Echinus melo Lamarck, 1816
Echinus microstoma Thomson, 1872
Echinus microtuberculatus Blainville, 1825
Echinus miliaris P.L.S. Müller, 1771
Echinus neglectus Lamarck, 1816
Echinus norvegicus Düben & Koren, 1844
Echinus pseudomelo Blainville, 1825
Echinus quinqueangulatus Blainville, 1825
Echinus quinqueangulosus
Echinus rarispinus G.O. Sars, 1871
Echinus sardicus Delle Chiaje, 1841
Echinus saxatilis Linnaeus, 1758
Echinus Schwartzii Nilsson, 1817
Echinus sphaera O.F. Müller, 1776
Echinus subangulosus de Blainville, 1826
Echinus tenuispinus Norman, 1868
Echinus violaceus Blainville, 1825
Echinus wallisi A. Agassiz, 1880
Ecionemia compressa Bowerbank, 1866
Ecionemia ponderosa Bowerbank, 1866
Chalinula fertilis Keller, 1880
Chalinula folia Schmidt, 1870
Chalinula loosanoffi (Hartman, 1958)
Chalinula nigra Boury-Esnault & Lopes, 1985
Chalinula renieroides Schmidt, 1868
Characella aspera Sollas, 1886
Characella saxicola Topsent, 1892
Characella sollasi Topsent, 1890
Chaunorhynchus andaman (Hylleberg & Nateewathana, 1988)
Chaunorhynchus loveni (Malmgren, 1867)
Chaunorhynchus pacificus (Hartman, 1960)
Crithida thalassina Gosse, 1855
Crossaster papposus (Linnaeus, 1767)
Crossaster squamatus (Döderlein, 1900)
Crypthelia affinis Moseley, 1879
Crypthelia medioatlantica Zibrowius & Cairns, 1992
Crypthelia tenuiseptata Cairns, 1986
Crypthelia vascomarquesi Zibrowius & Cairns, 1992
Cryptocopoides arcticus (Hansen, 1913)
Crystallophyes amygdalina Moser, 1925
Ctenodiscus corniculatus Gray, 1840
Ctenodiscus pygmaeus Müller & Troschel, 1842
Ctenodrilus parvulus Scharff, 1887
Ctenodrilus serratus (Schmidt, 1857)
Culcita borealis Süssbach & Breckner, 1911
Doloria (Doloria) sarsi Kornicker, 1987
Dorigona jacqueti Perrier, 1894
Dorigona prehensilis Perrier, 1885
Dorocidaris abyssicola A. Agassiz, 1869
Dorvillea albomaculata Åkesson & Rice, 1992
Dorvillea angolana (Augener, 1918)
Dorvillea kastjani Tsetlin, 1980
Dorvillea roemeri (Augener, 1912)
Dorvillea romeri (Augener, 1912)
Duseideia fragilis (Montagu, 1814)
Dynamena pumila (Linnaeus, 1758)
Dysidea dendyi (Ferrer Hernandez, 1923)
Dysidea elegans (Lendenfeld, 1889)
Dysidea elegans (Nardo, 1847)
Dysidea fragilis (Montagu, 1814)
Dysidea papillosa (Johnston, 1842)
Dysidea tupha (Martens, 1824)
Dysponetus caecus (Langerhans, 1880)
Dysponetus gracilis Hartman, 1965
Dysponetus paleophorus Hartmann-Schröder, 1974
Dysponetus pygmaeus Levinsen, 1879
Dytaster agassizi Perrier, 1894
Dytaster biserialis Sladen, 1889
Dytaster exilis Sladen, 1889
Dytaster grandis (Verrill, 1884)
Dytaster insignis (Perrier, 1884)
Dytaster intermedius Perrier, 1891
Dytaster madreporifer Sladen, 1889
Dytaster mollis (Perrier, 1885)
Dytaster parvulus Koehler, 1907
Dytaster rigidus Perrier, 1894
Dytaster semispinosus (Perrier, 1894)
Earleria antoniae (Gili, Bouillon, Pagès, Palanquea, Puig & Heussner, 1998)
Earleria araiae (Gili, Bouillon, Pagès, Palanquea & Puig, 1999)
Ebnerella kuekenthali Breitfuss, 1896
Ebnerella lanceolata Breitfuss, 1898
Ebnerella nitida Arnesen, 1900
Ebnerella schulzei Breitfuss, 1896
Echinaster eschrichti J. Müller & Troschel, 1842
Echinaster oculatus Düben & Koren, 1846
Echinaster sarsi Müller & Troschel, 1844
Echinaster scrobiculatus Danielssen & Koren, 1883
Echinaster sepositus (Retzius, 1783)
Coelocalypta hyalina Pulitzer-Finali, 1978
Coelopleurus floridana A. Agassiz, 1872
Coelopleurus floridanus A. Agassiz, 1872
Coelosphaera macrosigma (Topsent, 1892)
Coelosphaera phlyctenodes (Carter, 1876)
Coelosphaera (Coelosphaera) macrosigma (Topsent, 1890)
Coelosphaera (Coelosphaera) phlyctenodes (Carter, 1876)
Coenocyathus anthophyllites Milne Edwards & Haime, 1848
Collospongelia dendyi Ferrer-Hernandez, 1923
Dactylia syphonoides (Lamarck, 1814)
Dactylocalyx patella Schulze, 1887
Dactylocalyx potatorum Schmidt, 1880
Dactylocalyx pumiceus Stutchbury, 1841
Daisyella bathyalis Rosso & Taylor, 2002
Dalhousiella carpenteri McIntosh, 1901
Damiria prouhoi Topsent, 1892
Danalia larvaeformis (Giard, 1874)
Darwinella aurea sensu Lendenfeld, 1889
Dasmosmilia lymani (Pourtalès, 1871)
Dasybranchus caducus (Grube, 1846)
Dasybranchus carneus Grube, 1870
Dasybranchus gajolae Eisig, 1887
Deflexilodes acutipes (Ledoyer, 1983)
Deflexilodes gibbosus (Chevreux, 1888)
Deflexilodes griseus (Della Valle, 1893)
Deflexilodes subnudus (Norman, 1889)
Elicodasia mirabilis Laubier & Ramos, 1973
Enalcyonium parvum (Zulueta, 1908)
Enalcyonium setigerum (Zulueta, 1908)
Enallopsammia rostrata (Pourtalès, 1878)
Enapteris euchaeta Chun, 1888
Endectyon demonstrans (Topsent, 1890)
Endectyon teissieri Cabioch, 1968
Doconesthes sessilis Topsent, 1928
Dodecaceria caulleryi Dehorne, 1933
Dodecaceria concharum Örsted, 1843
Dodecaceria diceria Hartman, 1951
Dodecaceria fimbriata Verrill, 1879
Doliolina intermedia (Neumann, 1906)
Doliolina intermedium Neumann
Doliolina krohni Herdmann, 1888
Doliolina muelleri (Krohn, 1852)
Doliolina (Doliolina) krohni Herdman, 1888
Doliolina (Doliolina) muelleri (Krohn, 1852)
Doliolina (Doliolinetta) intermedia (Neumann, 1906)
Dolioloides rarum (Grobben, 1882)
Doliolum gegenbauri Uljanin, 1884
Doliolum muelleri Krohn, 1852
Doliolum nationalis Borgert, 1893
Doliopsis rubescens Vogt, 1854
Eranno bifrons Kinberg, 1865
Erenna richardi Bedot, 1904
Ergyne cervicornis Risso, 1816
Erinaceusyllis cryptica (Ben-Eliahu, 1977)
Erseia oligochaeta Nygren, Sundkvist, Mikac & Pleijel, 2010
Erylus aspidodiscus Topsent, 1928
Erylus euastrum (Schmidt, 1868)
Erylus expletus Topsent, 1927
Erylus nummulifer Topsent, 1890
Erylus stellifer Topsent, 1892
Esperella albicans Topsent, 1892
Esperella fascibula Topsent, 1904
Esperella hamata Topsent, 1892
Esperella mollis Topsent, 1892
Esperia arctica Fristedt, 1887
Esperia borassus Carter, 1876
Esperia bowerbanki Schmidt, 1862
Esperia contarenii (Lieberkühn, 1859)
Esperia dubia Czerniavsky, 1880
Esperia foraminosa Schmidt, 1862
Esperia helios Fristedt, 1887
Esperia hyalina Schmidt, 1873
Esperia intermedia Schmidt, 1874
Esperia irregularis Czerniavsky, 1880
Esperia lorenzii Schmidt, 1862
Esperia loveni (Fristedt, 1887)
Esperia massa Schmidt, 1862
Esperia muscoides Czerniavsky, 1880
Esperia pustula Fristedt, 1887
Esperia sophia Fristedt, 1887
Esperia syrinx Schmidt, 1862
Esperia tuberosa Schmidt, 1868
Esperia tunicata Schmidt, 1862
Esperia velutata Schmidt, 1862
Esperia villosa Carter, 1874
Esperiopsis artemisinae Brøndsted, 1932
Esperiopsis columnata Topsent, 1890
Esperiopsis decora Topsent, 1904
Esperiopsis digitata (Miklucho-Maclay, 1870)
Esperiopsis foliata (Bowerbank, 1874)
Esperiopsis forcipula Lundbeck, 1905
Esperiopsis glaber Brøndsted, 1924
Esperiopsis glomeris Topsent, 1904
Esperiopsis incognita Stephens, 1916
Esperiopsis involuta (Bowerbank, 1882)
Esperiopsis lobata (Montagu, 1814)
Esperiopsis macrosigma Stephens, 1916
Esperiopsis pedicellata Lundbeck, 1905
Esperiopsis polymorpha Topsent, 1890
Esperiopsis praedita Topsent, 1890
Esperiopsis radiata (Topsent, 1927)
Esperiopsis rigida Lambe, 1893
Esperiopsis schmidti Arnesen, 1903
Caulleriella viridis (Langherans, 1880)
Caulleriella zetlandica (McIntosh, 1911)
Caulophacus (Caulophacus) arcticus (Hansen, 1885)
Celtodoryx ciocalyptoides (Burton, 1935)
Celtodoryx girardae Perez, Perrin, Carteron, Vacelet & Boury-Esnault, 2006
Centrostephanus longispinus (Philippi, 1845)
Ceramaster granularis (Retzius, 1783)
Ceramaster grenadensis (Perrier, 1881)
Colpaster edwardsi (Perrier, 1882)
Colpaster scutigerula Sladen, 1889
Cometella pyrula Carter, 1876
Coppatias inconditus Topsent, 1892
Desmacidon anceps Schmidt, 1874
Desmacidon columella Bowerbank, 1874
Desmacidon crux Schmidt, 1875
Desmacidon emphysema Schmidt, 1875
Desmacidon fruticosum (Montagu, 1814)
Desmacidon funicatus Schmidt, 1870
Desmacidon peltatus Topsent, 1904
Desmacidon perarmatus (Bowerbank, 1866)
Desmacidon titubans Schmidt, 1870
Desmacodes suberea Schmidt, 1870
Desmophyes annectens Haeckel, 1888
Desmophyes villafrancae (Carré, 1969)
Desmosoma tetarta (Hessler, 1970)
Diactinolopha moncharmonti Sarà, 1960
Diadema antillarum Philippi, 1845
Diadema setosum (Leske, 1778)
Dialychone acustica Claparède, 1870
Esperiopsis villosa (Carter, 1874)
Eteone arctica Malmgren, 1867
Eteone barbata Malmgren, 1865
Eteone flava (Fabricius, 1780)
Eteone foliosa Quatrefages, 1866
Dictyonella pelligera (Schmidt, 1864)
Dictyonella plicata (Schmidt, 1880)
Didiscus pseudodidiscoides (Corriero, Scalera-Liaci & Pronzato, 1996)
Didiscus stylifer Tsurnamal, 1969
Didiscus styliferus Tsurnamal, 1969
Dimophyes arctica (Chun, 1897)
Dinophilus gigas Weldon, 1886
Dinophilus gyrociliatus O. Schmidt, 1857
Dinophilus taeniatus Harmer, 1889
Dinophilus vorticoides Schmidt, 1848
Diopatra madeirensis Langerhans, 1880
Diopatra neapolitana Delle Chiaje, 1841
Dioplosyllis cirrosa Gidholm, 1962
Dioplosyllis octodentata Perkins, 1981
Diphasia alata (Hincks, 1855)
Diphasia pinaster sensu Hincks, 1868
Diphyes arctica Chun, 1897
Diphyes dispar Chamisso & Eysenhardt, 1821
Diphyes ovata Keferstein & Ehlers, 1860
Diphyes subtilis Chun, 1886
Diphyes truncata Sars, 1846
Diplocirrus glaucus (Malmgren, 1867)
Diplocirrus hirsutus (Hansen, 1878)
Diplocirrus longisetosus (Marenzeller, 1890)
Diplocirrus stopbowitzi Darbyshire & Mackie, 2009
Eudoxia macra Totton, 1954
Eudoxia tenuis Patriti, 1965
Eudoxoides mitra (Huxley, 1859)
Eudoxoides spiralis (Bigelow, 1911)
Eugotoea petalina Margulis, 1989
Eulalia anoculata Fauchald, 1972
Eulalia aurea Gravier, 1896
Eulalia bilineata (Johnston, 1840)
Eulalia brunnea (Hartmann-Schröder, 1963)
Echinaster (Echinaster) sepositus (Retzius, 1783)
Echinocardium cordatum (Pennant, 1777)
Echinocardium fenauxi Pequignat, 1963
Echinocardium flavescens (O.F. Müller, 1776)
Echinocardium gibbosus (L. Agassiz & Desor, 1847)
Echinocardium gibbosus Barrett, 1857 non L. Agassiz & Desor, 1847
Echinocardium intermedium Mortensen, 1907
Echinocardium laevigaster A. Agassiz, 1869
Echinocardium mediterraneum (Forbes, 1844)
Echinocardium mortenseni Thiéry, 1909
Echinocardium pennatifidum Koehler, 1898 non Norman, 1868
Echinocardium pennatifidum Norman, 1868
Echinocardium sebae Gray, 1825
Echinoclathria beringensis (Hentschel, 1929)
Echinoclathria hjorti Arnesen, 1920
Echinoclathria schmitti de Laubenfels, 1942
Echinoclathria translata (Pulitzer-Finali, 1978)
Echinocyamus grandiporus Mortensen, 1907
Echinocyamus macrostomus Mortensen, 1907
Eutelichthys leptochirus Tortonese, 1959
Euthalenessa oculata (Peters, 1854)
Euthelepus setubalensis McIntosh, 1885
Eutonina indicans (Romanes, 1876)
Euzonus flabelliferus (Ziegelmeier, 1955)
Euzonus flabelligerus [Autt.]
Evoplosoma scorpio Downey, 1981
Exogone cirrata (Kölliker in Koch, 1846)
Exogone claparedii (Langerhans, 1879)
Exogone dispar (Webster, 1879)
Exogone edwardsii (Kölliker in Koch, 1846)
Exogone fauveli Cognetti, 1961
Exogone furcifera Eliason, 1962
Exogone gemmifera (Pagenstecher, 1862)
Dorvillea rubrovittata (Grube, 1855)
Dorypleres incrustans (Topsent, 1890)
Euphrosine armadillo Sars, 1851
Euphrosine borealis Örstedt, 1843
Euphrosine cirrata Sars, 1862
Euphrosine cirrataepropinqua Amoureux, 1982
Euphrosine foliosa Audouin & Milne-Edwards, 1833
Euphrosine myrtosa Savigny in Lamarck, 1818
Euphrosyne armadillo Sars, 1851
Euphrosyne cirrata Sars, 1862
Euphrosyne foliosa Audouin & Milne Edwards, 1833
Euphrosyne myrtosa Savigny in Lamarck, 1818
Euphysa aurata Forbes, 1848
Euphysa flammea (Hartlaub, 1902)
Euphysa obvoluta (Kramp, 1933)
Euphysora bigelowi Maas, 1905
Eupista dibranchiata Fauvel, 1909
Eupistella dibranchiata (Fauvel, 1909)
Euplectella brevis Bowerbank, 1861
Euplectella mammillaris (Mueller, 1806)
Euplectella robusta Bowerbank, 1861
Euplectella suberea Thomson, 1877
Eupolymnia nebulosa (Montagu, 1818)
Eupolymnia nesidensis (Delle Chiaje, 1828)
Eupolyodontes gulo (Grube, 1855)
Eupronoe maculata Claus, 1879
Eupronoe minuta Claus, 1879
Euratella salmacidis (Claparède, 1869)
Euritmia hamulisetosa Sarda-Borroy, 1987
Eurycope cornuta Sars, 1864
Eurycope iphthima Wilson, 1981
Eurycope ratmanovi Gurjanova, 1946
Eurypon acanthotoxa Stephens, 1916
Eurypon cinctum Sarà, 1960
Eteone fucata M. Sars in G.O. Sars, 1872
Eteone lactea Claparède, 1868
Eteone longa (Fabricius, 1780)
Eteone picta Quatrefages, 1866
Eteone siphodonta (Delle Chiaje, 1830)
Eteone spetsbergensis Malmgren, 1865
Eteone suecica Bergström, 1914
Euarche tubifex Ehlers, 1887
Euchelipluma pristina Topsent, 1909
Euchone analis (Kröyer, 1856)
Euchone arenae
Euchone capensis Day, 1961
Euchone elegans Verrill, 1873
Euchone incolor Hartman, 1965
Euchone papillosa (Sars, 1851)
Euchone rosea Langerhans, 1884
Euchone rubella Ehlers, 1871
Euchone rubrocincta (Sars, 1862)
Euchone southerni Banse, 1970
Euclymene collaris (Claparède, 1869)
Euclymene droebachiensis (Sars, 1872)
Euclymene lindrothi Eliason, 1962
Euclymene lombricoides (Quatrefages, 1866)
Euclymene oerstedi (Claparède, 1863)
Euclymene palermitana (Grube, 1840)
Eucodonium brownei Hartlaub, 1907
Eucranta villosa Malmgren, 1866
Eudendrium annulatum Norman, 1864
Eudendrium calceolatum Motz-Kossowska, 1905
Eudendrium capillare Alder, 1856
Eudendrium capillaroides Schuchert, 2008
Eudendrium fragile Motz-Kossowska, 1905
Eudendrium glomeratum Picard, 1952
Eudendrium insigne Hincks, 1861
Eudendrium islandicum Schuchert, 2000
Eulalia clavigera (Audouin & Milne Edwards, 1833)
Eulalia expusilla Pleijel, 1987
Eulalia flavescens Bobretzky, 1868
Eulalia fucescens [auct. misspelling]
Eulalia fuscescens Saint-Joseph, 1888
Eulalia hanssoni Pleijel, 1987
Eulalia lapsus Pleijel, 1991
Eulalia microoculata Pleijel, 1987
Eulalia minuta (Grube, 1860)
Eulalia mustela Pleijel, 1987
Eulalia ornata Saint-Joseph, 1888
Eulalia pusilla Ørstedt, 1843
Eulalia quadrilineata Saint-Joseph, 1888
Eulalia splendens Saint-Joseph, 1888
Eulalia tjalfiensis Ditlevsen, 1917
Eulalia trilineata de Saint-Joseph, 1888
Eulalia tripunctata McIntosh, 1874
Eulalia venusta de Saint Joseph, 1888
Eulalia viridis (Linnaeus, 1767)
Eulalia (Sige) venustissima Banse, 1959
Eumastia appendiculata (Schmidt, 1875)
Eumastia sitiens Schmidt, 1870
Eumenia crassa Örsted, 1843
Eumida arctica (Annenkova, 1946)
Eumida bahusiensis Bergstrom, 1914
Eumida longicirrata Hartmann-Schröder, 1975
Eumida ockelmanni Eibye-Jacobsen, 1987
Eumida parva (Saint-Joseph, 1888)
Eumida punctifera (Grube, 1860)
Eumida sanguinea (Örsted, 1843)
Eumida (Eumida) longicirrata Hartmann-Schröder, 1975
Eunapius carteri (Bowerbank, 1863)
Eunereis longissima Johnston, 1840
Eunice antennata (Savigny in Lamarck, 1818)
Eclysippe vanelli (Fauvel, 1936)
Ectopleura crocea (Agassiz, 1862)
Ectopleura dumortierii (Van Beneden, 1844)
Ectyodoryx balanoides Koltun, 1959
Ectyodoryx foliata (Fristedt, 1887)
Ectyodoryx indistincta (Fristedt, 1887)
Ectyodoryx loyningi (Burton, 1934)
Ectyodoryx olgae Hentschel, 1929
Ectyodoryx oligacantha Hentschel, 1929
Ectyodoryx stephensi (Burton, 1930)
Egmundella amirantensis Millard & Bouillon, 1973
Ehlersia cornuta (Rathke, 1843)
Ehlersia ferruginea Langerhans, 1881
Ehlersia nepiotoca Caullery & Mesnil, 1916
Ehlersia rosea Langerhans, 1879
Ehlersia (Syllis) rosea Langerhans, 1879
Ehlersia (Syllis) simplex Langerhans, 1879
Ehlersiella hirsuta Roule, 1896
Elasmopus brasiliensis (Dana, 1855)
Elatopathes abietina (Pourtalès, 1874)
Eleutheria claparedei Hartlaub, 1889
Fimbriosthenelais longipinnis (Grube, 1870)
Fimbriosthenelais zetlandica (McIntosh, 1876)
Flabelligella biscayensis Kolmer, 1985
Flabelligella mediterranea Kolmer, 1985
Flabelligera affinis M. Sars, 1829
Flabelligera infundibularis H.P. Johnson, 1901
Flabellum (Ulocyathus) alabastrum Moseley in Thompson, 1873
Flexopecten glaber (Linnaeus, 1758)
Flexopecten hyalinus (Poli, 1795)
Florianella bipolaris Rieger & Sterrer, 1975
Foersteria antoniae Gili, Bouillon, Pagès, Palanques, Puig & Heussner, 1998
Foersteria araiae Gili, Bouillon, Pagès, Palanquea & Puig, 1999
Exogone hebes (Webster & Benedict, 1884)
Exogone langerhansi (Czerniavsky, 1881)
Exogone maderensis (Czerniavsky, 1881)
Exogone marenzelleri Mc Intosh, 1908
Exogone martinsi Pagenstecher, 1862
Exogone naidina Örsted, 1845
Exogone oerstedii (Kölliker in Koch, 1846)
Exogone parahomoseta Hartmann-Schröder, 1974
Exogone pusilla Dujardin, 1851
Exogone verugera (Claparède, 1868)
Exogone (Exogone) breviantennata Hartmann-Schröder, 1959
Exogone (Exogone) insignis (Langerhans, 1879)
Exogone (Exogone) lopezi San Martín, Ceberio & Aguirrezabalaga, 1996
Exogone (Exogone) lourei Berkeley & Berkeley, 1938
Exogone (Exogone) marisae Pascual, Núñez & San Martín, 1996
Exogone (Exogone) mompasensis Martínez, Adarraga & San Martín, 2002
Exogone (Exogone) sorbei San Martín, Ceberio & Aguirrezabalaga, 1996
Exogone (Parexogone) campoyi San Martín, Ceberio & Aguirrezabalaga, 1996
Exogone (Parexogone) caribensis San Martín, 1991
Exogone (Parexogone) gambiae Lanera, Sordino & San Martín, 1994
Exogone (Parexogone) hebes (Webster & Benedict, 1884)
Exogone (Parexogone) meridionalis Cognetti, 1955
Exogone (Parexogone) wolfi San Martín, 1991
Exogone (Sylline) aquadulcensis Pascual, Núñez & San Martín, 1996
Fabienna oligonema (Kramp, 1955)
Fabricia sabella (Ehrenberg, 1836)
Fabricia stellaris (Müller, 1774)
Fabriciola baltica Friedrich, 1939
Fabriciola tonerella Banse, 1956
Farrea foliascens Topsent, 1906
Farrea occa Bowerbank, 1862
Forcepia assimilis (Lundbeck, 1910)
Forcepia brunnea (Topsent, 1904)
Forcepia bulbosa (Carter, 1876)
Forcepia dentifera (Topsent, 1927)
Forcepia exilis (Topsent, 1892)
Forcepia forcipis (Bowerbank, 1866)
Forcepia forcipula (Lundbeck, 1905)
Forcepia imperfecta Topsent, 1904
Forcepia luciensis (Topsent, 1888)
Forcepia megachela (Maldonado, 1992)
Forcepia thielei Lundbeck, 1905
Forcepia topsenti Lundbeck, 1905
Forcepia versatilis Topsent, 1890
Forcepia (Forcepia) forcipis (Bowerbank, 1866)
Forcepia (Forcepia) forcipula (Lundbeck, 1905)
Forcepia (Forcepia) fragilis Stephens, 1917
Forcepia (Forcepia) groenlandica Fristedt, 1887
Forcepia (Forcepia) imperfecta Topsent, 1904
Forcepia (Forcepia) pustula (Fristedt, 1887)
Forcepia (Forcepia) thielei Lundbeck, 1905
Forcepia (Forcepia) topsenti Lundbeck, 1905
Forcepia (Forcepia) versatilis Topsent, 1890
Forcepia (Leptolabis) assimilis (Lundbeck, 1910)
Forcepia (Leptolabis) brunnea (Topsent, 1904)
Forcepia (Leptolabis) convergens (Topsent, 1928)
Forcepia (Leptolabis) forcipula (Topsent, 1904)
Forcepia (Leptolabis) megachela (Maldonado, 1992)
Forcepia (Leptolabis) pustula (Fristedt, 1887)
Forskalia asymmetrica Pugh, 2003
Forskalia contorta (Milne-Edwards, 1841)
Forskalia cuneata Chun, 1888
Forskalia edwardsii Kölliker, 1853
Forskalia formosa Keferstein & Ehlers, 1860
Desmacella inornata (Bowerbank, 1866)
Desmacella meliorata Wiedenmayer, 1977
Desmacella peachi sensu Ferrer-Hernandez, 1914
Desmacella peachii (Bowerbank, 1866)
Desmacella porosa Fristedt, 1887
Desmacella pumicea Fristedt, 1885
Desmacella pumilio Schmidt, 1870
Desmacella rosea Fristedt, 1887
Desmacella suberea (Schmidt, 1870)
Desmacella variantia (Bowerbank, 1858)
Desmacella velutata (Renier, 1807)
Desmacella vulgaris Topsent, 1892
Desmacidon abyssi Topsent, 1904
Desmacidon adriaticum Sarà, 1969
Eophrixus adriaticus (Nierstrasz & Brender à Brandis, 1931)
Eophrixus enchophyllus Caroli, 1930
Ephesiella abyssorum (Hansen, 1878)
Ephesiella ramosae Desbruyères, 1980
Ephydatia fluviatilis (Linnaeus, 1759)
Ephydatia muelleri (Lieberkühn, 1856)
Epidiopatra hupferiana Augener, 1918
Epigamia alexandri (Malmgren, 1867)
Epigamia labordai (San Martín & López, 2002)
Epigamia macrophtalma (Marenzeller, 1874)
Epigamia usaensis (Imajima, 1966)
Epipenaeon ingens Nobili, 1906
Epiphrixus adriaticus Nierstrasz & Brender à Brandis, 1932
Epipolasis spissa (Topsent, 1892)
Gammarus komareki Schäferna, 1922
Gammarus lacustris G.O. Sars, 1864
Gattiola finmarchica Malmgren, 1867
Gattyana amondseni (Malmgren, 1867)
Gattyana cirrhosa (Pallas, 1766)
Gattyana cirrosa (Pallas, 1766)
Esperiopsis schmidtii Arnesen, 1903
Esperiopsis strongylatus (Alander, 1942)
Esperiopsis strongylophora Vacelet, 1969
Esperiopsis typichela Lundbeck, 1905
Gilia reticulata (Totton, 1954)
Gleba excisa Otto, 1823
Gleba hippopus Forsskål, 1776
Glossocephalus milneedwardsi Bovallius, 1887
Glycera alba (O.F. Müller, 1776)
Glycera capitata Örsted, 1843
Glycera celtica O'Connor, 1987
Glycera convoluta Keferstein, 1862
Glycera dayi O'Connor, 1987
Glycera fallax Quatrefages, 1850
Glycera gigantea Quatrefages, 1866
Glycera lapidum Quatrefages, 1866
Glycera mimica Hartman, 1965
Glycera minuta (Bobretzky, 1870)
Glycera oxycephala Ehlers, 1887
Glycera rouxii Audouin & Milne Edwards, 1833
Glycera siphonostoma (Delle Chiaje, 1827)
Glycera tesselata Grube, 1840
Glycera tridactyla Schmarda, 1861
Glycera unicornis Savigny in Lamarck, 1818
Glycerella atlantica Wesenberg-Lund, 1950
Glycerella magellanica (McIntosh, 1885)
Glycinde bonhourei Gravier, 1904
Glycinde nordmanni (Malmgren, 1866)
Glyphanostomum abyssale Day, 1967
Glyphanostomum pallescens (Théel, 1879)
Glyphohesione klatti Friedrich, 1950
Gnathaster mediterraneus von Marenzeller, 1893
Gomphostegia loricata Topsent, 1896
Goniada emerita Audouin & Milne-Edwards, 1833
Gelliodes bifacialis Topsent, 1904
Gelliodes cavicornis Topsent, 1892
Gelliodes fayalensis Topsent, 1892
Gelliodes plexa Lundbeck, 1902
Gellius binarius Topsent, 1927
Gellius couchii (Bowerbank, 1874)
Gellius lacazei Topsent, 1893
Gellius macrosigma Topsent, 1890
Gellius marismedi Pulitzer-Finali, 1978
Gellius microsigma Babic, 1922
Gellius microxifer Topsent, 1925
Gellius ravus Stephens, 1912
Gellius rhaphidiophorus Brøndsted, 1933
Gellius tenuisigma Sarà & Siribelli, 1960
Gellius uncinatus Topsent, 1892
Geminosyllis granulosa Lattig, San Martín & Martin, 2007
Genetyllis lutea Malmgren, 1865
Genetyllis rubiginosa (de Saint-Joseph, 1888)
Geodia canaliculata Schmidt, 1868
Geodia conchilega Schmidt, 1862
Geodia cydonium (Jameson, 1811)
Geodia eosaster (Sollas, 1888)
Geodia hentscheli Cárdenas, Rapp, Schander & Tendal, 2010
Geodia intuta (Topsent, 1892)
Geodia macandrewii Bowerbank, 1858
Geodia mesotriaena (Hentschel, 1929)
Geodia mesotriaena Lendenfeld, 1910
Geodia normani (Sollas, 1888)
Geodia phlegraei (Sollas, 1880)
Geodia pyriformis (Vosmaer, 1885)
Geodia ramosa (Topsent, 1928)
Geodia simplicissima Burton, 1931
Geodia spherastrella Topsent, 1904
Geodia stellosa (Czerniavsky, 1880)
Eurypon clavatum (Bowerbank, 1866)
Eurypon clavigerum (Bowerbank, 1866)
Eurypon coronula (Bowerbank, 1874)
Eurypon ditoxa Stephens, 1916
Eurypon incipiens Topsent, 1927
Eurypon lictor (Topsent, 1904)
Eurypon microchela Stephens, 1916
Eurypon mixtum (Topsent, 1928)
Eurypon mucronale (Topsent, 1928)
Eurypon mucronatum (Topsent, 1904)
Eurypon pilosella (Topsent, 1904)
Eurypon radiata (Bowerbank, 1866)
Eurypon scabiosum (Topsent, 1927)
Eurypon spitzbergense (Fristedt, 1887)
Eurypon spitzbergensis (Fristedt, 1887)
Eurypon tenuissimum Stephens, 1916
Eurypon topsenti (Burton, 1954)
Eurypon vesciculare Sarà & Siribelli, 1960
Eurypon (Acantheurypon) incipiens (Topsent, 1927)
Eurypon (Acantheurypon) mixtum (Topsent, 1928)
Eurypon (Acantheurypon) mucronale (Topsent, 1928)
Eurypon (Acantheurypon) spinispinosum (Topsent, 1904)
Eurysyllis lenta Quatrefages, 1866
Eurysyllis tuberculata Ehlers, 1864
Eurythoe complanata (Pallas, 1766)
Eurythoe syriaca Kinberg, 1857
Eusyllis assimilis Marenzeller, 1875
Eusyllis blomstrandi Malmgren, 1867
Eusyllis intermedia Saint-Joseph, 1887
Eusyllis kupfferi Langerhans, 1879
Eusyllis lamelligera Marion & Bobretzky, 1875
Eusyllis monilicornis Saint Joseph, 1887
Eusyllis tubifex (Gosse, 1885)
Halichondria abyssi Carter, 1874
Eudendrium merulum Watson, 1985
Eudendrium racemosum (Cavolini, 1785)
Eudendrium rameum (Pallas, 1766)
Eudendrium ramosum (Linnaeus, 1758)
Eudendrium simplex Pieper, 1884
Eudendrium teissieri Cabioch, 1970
Eudendrium vaginatum Allman, 1863
Eudendrium vervoorti Marques & Migotto, 1998
Eudolium crosseanum (di Monterosato, 1869)
Goniaster abbensis Gray, 1843
Goniaster africanus Verrill, 1871
Goniaster americanus Verrill, 1871
Goniaster cuspidatus Gray, 1840
Goniaster hispidus M. Sars, 1872
Goniaster nidarosiensis Storm, 1881
Goniaster sebae Gray, 1840
Goniaster templetoni Thomson in Forbes, 1839
Goniaster tessellatus (Lamarck, 1816)
Goniodiscus acutus Heller, 1863
Goniodiscus placenta Müller & Troschel, 1842
Goniodiscus placentaeformis Heller, 1863
Goniopecten edwardsi Perrier, 1882
Goniopecten inermis Perrier, 1885
Goniopecten subtilis Perrier, 1881
Gorbunovia malmgreni (Hansen, 1878)
Gorgoniapolynoe caeciliae (Fauvel, 1913)
Gracilechinus acutus (Lamarck, 1816)
Gracilechinus affinis (Mortensen, 1903)
Gracilechinus alexandri (Danielssen & Koren, 1883)
Gracilechinus elegans (Düben & Koren, 1844)
Gracilimesus angustus (Hansen, 1916)
Grantessa glacialis (Haeckel, 1870)
Grantessa kuekenthali (Breitfuss, 1896)
Grantessa lanceolata (Breitfuss, 1898)
Fasciospongia aspergillum (Schmidt, 1868)
Fauvelia martinensis Gravier, 1900
Fauvelicirratulus dollfusi (Fauvel, 1928)
Fauveliopsis adriatica Katzmann & Laubier, 1974
Fauveliopsis brattegardi Fauchald, 1972
Fauveliopsis brevis Hartman, 1967
Fauveliopsis cabiochi Amoureux, 1982
Fauveliopsis fauchaldi Katzmann & Laubier, 1974
Fauveliopsis jameoaquensis Nuñez in Nuñez, Ocaña & Brito, 1997
Fauveliopsis olgae Hartmann-Schröder, 1983
Fauveliopsis scabra Hartman & Fauchald, 1971
Ficopomatus enigmaticus (Fauvel, 1923)
Fieldingia lagettoides Kent, 1870
Filibranchus roseus Malm, 1874
Filograna implexa Berkeley, 1835
Filogranula gracilis Langerhans, 1884
Haliclona palmata (Ellis & Solander, 1786)
Haliclona palmonensis Carballo & Garcia-Gomez, 1995
Haliclona papillifera (Swartschewsky, 1906)
Haliclona parasitica (Montagu, 1814)
Haliclona parenchyma (Lundbeck, 1902)
Haliclona pocilliformis (Griessinger, 1971)
Haliclona poecillastroides (Vacelet, 1969)
Haliclona pons (Schmidt, 1870)
Haliclona protochalina (Czerniavsky, 1880)
Haliclona pulcherrima (Fristedt, 1885)
Haliclona pulchra (Swartschewsky, 1906)
Haliclona pyrrhi (Hanitsch, 1895)
Haliclona rava (Stephens, 1912)
Haliclona rectangularis (Ridley & Dendy, 1886)
Haliclona rosea (Bowerbank, 1866)
Haliclona rossica (Hentschel, 1929)
Haliclona sarai (Pulitzer-Finali, 1969)
Halichondria aculeata Johnston, 1842
Halichondria agglomerans Cabioch, 1968
Halichondria albescens sensu Johnston, 1842
Halichondria albula Bowerbank, 1866
Halichondria angulata Bowerbank, 1866
Halichondria anhelans (Vio in Olivi, 1792)
Halichondria arenosa Hentschel, 1929
Halichondria aspera sensu Swartschevsky, 1905
Halichondria aurantiaca (Schmidt, 1864)
Halichondria axinelloides Swartschewsky, 1906
Halichondria bowerbanki Burton, 1930
Halichondria brunnea (Schmidt, 1868)
Halichondria candida Bowerbank, 1866
Halichondria carnosus Johnston, 1842
Halichondria colossea Lundbeck, 1902
Halichondria contorta (Sarà, 1961)
Halichondria convolvens Sarà, 1960
Halichondria coralloides Bowerbank, 1882
Halichondria cornuloides Burton, 1954
Halichondria difficilis Lundbeck, 1902
Halichondria diversispiculata Burton, 1930
Halichondria dubia (Czerniavsky, 1880)
Halichondria falcula Bowerbank, 1874
Halichondria fibrosa (Fristedt, 1887)
Halichondria foraminosa (Czerniavsky, 1880)
Halichondria forcipis Bowerbank, 1866
Halichondria genitrix (Schmidt, 1870)
Halichondria glabra Bowerbank, 1866
Halichondria grisea (Fristedt, 1887)
Halichondria heterorrhaphis Breitfuss, 1912
Halichondria hirsuta Fleming, 1828
Halichondria hystrix Johnston, 1842
Halichondria incrustans Johnston, 1842
Eunice aphroditois (Pallas, 1788)
Eunice cariboea Grube, 1856
Eunice dubitata Fauchald, 1974
Eunice dubitatus Fauchald, 1974
Eunice floridana (Pourtalès, 1867)
Eunice harassii Audouin & Milne Edwards, 1834
Eunice norvegica (Linnaeus, 1767)
Eunice oerstedii Stimpson, 1853
Eunice pennata (Müller, 1776)
Eunice purpurea Grube, 1866
Eunice roussaei Quatrefages, 1866
Eunice rubrocincta Ehlers, 1868
Eunice schizobranchia Claparède, 1870
Eunice torquata Quatrefages, 1866
Eunice vittata (Delle Chiaje, 1828)
Eunoe anoculata Hartmann-Schröder, 1975
Eunoe laetmogonensis Kirkegaard & Billett, 1980
Eunoe nodosa (M. Sars, 1861)
Eunoe oerstedi Malmgren, 1866
Eunoe senta (Moore, 1902)
Eunoe tuerkayi Barnich & Fiege, 2003
Eupanthalis kinbergi McIntosh, 1876
Gyptis brevipalpa (Hartmann-Schröder, 1959)
Gyptis capensis (Day, 1963)
Gyptis helgolandica Hilbig & Dittmer, 1979
Gyptis mackiei Pleijel, 1993
Gyptis mediterranea Pleijel, 1993
Gyptis propinqua Marion & Bobretzky, 1875
Gyptis rosea Marion, 1875
Habrocidaris scutata (A. Agassiz, 1880)
Hacelia attenuata Gray, 1840
Haematocleptes terebellidis Wirén, 1886
Halammohydra vermiformis Swedmark & Teissier, 1957
Halcampoides purpurea (Studer, 1879)
Haleciella microtheca Hadzi, 1914
Haliclona schmidti (Czerniavsky, 1880)
Haliclona semitubulosa (sensu Lieberkühn, 1859)
Haliclona simplex (Czerniavsky, 1880)
Haliclona simulans (Johnston, 1842)
Haliclona smithae de Weerdt, 2000
Haliclona solowetzkaja (Hentschel, 1929)
Haliclona spatula (Lundbeck, 1902)
Haliclona spitzbergensis (Hentschel, 1916)
Haliclona steueri Burton, 1936
Haliclona stirpescens (Topsent, 1925)
Haliclona tenera (Marenzeller, 1878)
Haliclona tenuiderma (Lundbeck, 1902)
Haliclona transitans (Czerniavsky, 1880)
Haliclona tromsoica (Hentschel, 1929)
Haliclona tubulifera (Swartschewsky, 1905)
Haliclona urceolus (Rathe & Vahl, 1806)
Haliclona utriculus (Topsent, 1904)
Haliclona valliculata (Griessinger, 1971)
Haliclona varia (Sarà, 1958)
Haliclona varia Lundbeck, 1909
Haliclona vega (Fristedt, 1887)
Haliclona ventilabrum (Fristedt, 1887)
Haliclona viridis (Keller, 1889)
Haliclona voeringi (Lundbeck, 1902)
Haliclona (Gellius) angulata (Bowerbank, 1866)
Haliclona (Gellius) arcoferus Vosmaer, 1885
Haliclona (Gellius) arctica Hentschel, 1916
Haliclona (Gellius) binaria (Topsent, 1927)
Haliclona (Gellius) bioxeata Boury-Esnault, Pansini & Uriz, 1994
Haliclona (Gellius) calyx (Ridley & Dendy, 1886)
Haliclona (Gellius) cucurbitiformis (Kirkpatrick, 1907)
Haliclona (Gellius) dubia (Babic, 1922)
Haliclona (Gellius) esperi (Arnesen, 1903)
Forskalia leuckarti Bedot, 1893
Forskalia tholoides Haeckel, 1888
Freyastera benthophila (Sladen, 1889)
Freyastera sexradiata (Perrier, 1885)
Freyastera tuberculata (Sladen, 1889)
Freyella aspera Verrill, 1895
Freyella benthophila Sladen, 1889
Freyella bracteata Sladen, 1889
Freyella elegans (Verrill, 1884)
Freyella laubieri Cherbonnier & Sibuet, 1973
Freyella recta Koehler, 1907
Freyella sexradiata Perrier, 1885
Freyella spinosa Perrier, 1885
Freyella tuberculata Sladen, 1889
Frillagalma vityazi Daniel, 1966
Fromia narcissae Perrier, 1885
Fungiacyathus (Bathyactis) marenzelleri (Vaughan, 1906)
Harmothoe abyssicola Bidenkap, 1894
Harmothoe andreapolis (McIntosh, 1874)
Harmothoe antilopes McIntosh, 1876
Harmothoe areolata (Grube, 1860)
Harmothoe aspera (Hansen, 1878)
Harmothoe bellani Barnich & Fiege, 2000
Harmothoe borealis (Théel, 1879)
Harmothoe castanea (Mc Intosh, 1876)
Harmothoe clavigera M. Sars, 1863
Harmothoe coeliaca de Saint-Joseph, 1888
Harmothoe crosetensis (McIntosh, 1885)
Harmothoe echinopustulata Fauvel, 1913
Harmothoe elisabethae (McIntosh, 1900)
Harmothoe evei Kirkegaard, 1980
Harmothoe extenuata (Grube, 1840)
Harmothoe fragilis Moore, 1910
Harmothoe fraserthomsoni McIntosh, 1897
Halichondria inornata Bowerbank, 1866
Halichondria johnstonia Bowerbank in Johnston, 1842
Halichondria labiata Hentschel, 1929
Halichondria lactea (Bowerbank, 1866)
Halichondria lambei Brøndsted, 1933
Halichondria leuconoides Topsent, 1890
Halichondria longispicula (Czerniavsky, 1880)
Halichondria luxurians Lieberkühn, 1859
Halichondria maculans Johnston, 1842
Halichondria membrana (Bowerbank, 1866)
Halichondria mutula Bowerbank, 1874
Halichondria nigricans Bowerbank, 1866
Halichondria nodosa (Fristedt, 1887)
Halichondria normani Burton, 1930
Halichondria oblonga (Hansen, 1885)
Halichondria osculum Lundbeck, 1902
Halichondria pachastrelloides Topsent, 1892
Halichondria paciscens (Schmidt, 1875)
Halichondria panicea (Pallas, 1766)
Halichondria phlyctenodes Carter, 1876
Halichondria plumosa (Montagu, 1814)
Halichondria renieroides (Fristedt, 1887)
Halichondria rosacea Lieberkühn, 1859
Halichondria scandens Bowerbank, 1866
Halichondria sevosa Johnston, 1842
Halichondria simulans Johnston, 1842
Halichondria sitiens (Schmidt, 1870)
Halichondria suberea (Montagu, 1814)
Halichondria suberia (Montagu, 1814)
Halichondria suberica (Montagu, 1814)
Halichondria tenera (Marenzeller, 1878)
Halichondria tenuiderma Lundbeck, 1902
Halichondria tenuispiculata Brøndsted, 1916
Grantessa murmanensis (Breitfuss, 1898)
Grantessa nitida (Arnesen, 1900)
Grantia clathrus Schmidt, 1864
Grantia ensata Bowerbank, 1858
Grantia lacunosa Johnston, 1842
Grantia pulverulenta (Grant, 1826)
Grantia singularis (Breitfuss, 1898)
Grapsicepon edwardsi Giard & Bonnier, 1888
Grayella polymastia Thiele, 1903
Grubea arminii Langerhans, 1881
Grubea balani Hartmann-Schröder, 1960
Grubea clavata (Claparède, 1863)
Grubea dolichopoda Webster, 1879
Grubea limbata Claparède, 1868
Grubea protandrica du Plessis, 1908
Grubea pusilla (Dujardin, 1851)
Grubea tenuicirrata (Claparède, 1864)
Grubea (Protogrubea) atokalis Czerniavsky, 1881
Grubeosyllis celiae Parapar & San Martín, 1992
Grubeulepis augeneri Pettibone, 1969
Grubeulepis katzmanni Pettibone, 1986
Grubianella klugei (Pergament & Khlebovich, 1964)
Guancha arnesenae Rapp, 2006
Guancha camura Rapp, 2006
Guancha lacunosa (Johnston, 1842)
Guancha pellucida Rapp, 2006
Guitarra fimbriata Carter, 1874
Guitarra laplani Boury-Esnault, Pansini & Uriz, 1993
Guitarra solorzanoi Cristobo, 1998
Guitarra voluta Topsent, 1904
Gyge branchialis Cornalia & Panceri, 1861
Gymnogonos crassicornis Bonnevie, 1898
Gymnogonos obvolutus (Kramp, 1933)
Gymnorete alicei (Topsent, 1901)
Haliclona (Gellius) fibulata (Schmidt, 1862)
Haliclona (Gellius) flagellifera (Ridley & Dendy, 1886)
Haliclona (Gellius) foraminosa (Topsent, 1904)
Haliclona (Gellius) hartlaubi Hentschel, 1929
Haliclona (Gellius) irregularis (Kieschnick, 1896)
Haliclona (Gellius) lacazei (Topsent, 1893)
Haliclona (Gellius) laevis (Ridley & Dendy, 1886)
Haliclona (Gellius) laurentina (Lambe, 1900)
Haliclona (Gellius) laxa (Topsent, 1892)
Haliclona (Gellius) marismedi (Pulitzer-Finali, 1978)
Haliclona (Gellius) microsigma (Babic, 1922)
Haliclona (Gellius) microtoxa (Lundbeck, 1902)
Haliclona (Gellius) microxifera (Topsent, 1925)
Haliclona (Gellius) primitiva (Lundbeck, 1902)
Haliclona (Gellius) proxima (Lundbeck, 1902)
Haliclona (Gellius) pyrrhi Hanitsch, 1895
Haliclona (Gellius) rava (Stephens, 1912)
Haliclona (Gellius) reptans (Whitelegge, 1906)
Haliclona (Gellius) rhaphidiophora (Brøndsted, 1933)
Haliclona (Gellius) spissa (Topsent, 1892)
Haliclona (Gellius) spongiosa Topsent, 1904
Haliclona (Gellius) stylifera Lendenfeld, 1897
Haliclona (Gellius) tenuisigma (Sarà & Siribelli, 1960)
Haliclona (Gellius) tricurvatifera (Carter, 1876)
Haliclona (Gellius) uncinata (Topsent, 1892)
Haliclona (Halichoclona) fistulosa (Bowerbank, 1866)
Haliclona (Halichoclona) fulva (Topsent, 1893)
Haliclona (Halichoclona) magna (Vacelet, 1969)
Haliclona (Halichoclona) parietalis (Topsent, 1893)
Haliclona (Halichoclona) perlucida (Griessinger, 1971)
Haliclona (Haliclona) cinerea (Grant, 1826)
Endectyon (Endectyon) lacazei (Topsent, 1892)
Endectyon (Endectyon) pilosus (Vacelet, 1961)
Endeis charybdaea (Dohrn, 1881)
Endeis difficilis Müller & Krapp, 2009
Enipo elisabethae McIntosh, 1900
Enipo kinbergi Malmgren, 1866
Enipo torelli (Malmgren, 1866)
Enneagonum hyalinum Quoy & Gaimard, 1827
Gaetanus tenuispinus (Sars G.O., 1900)
Galathowenia fragilis (Nilsen & Holthe, 1985)
Galathowenia oculata (Zachs, 1923)
Galetta australis (Quoy & Gaimard, 1833)
Galetta meteori Leloup, 1934
Halistemma striata Totton, 1965
Halitholus pauper Hartlaub, 1914
Halla parthenopeia (Delle Chiaje, 1828)
Halosydna gelatinosa (Sars, 1835)
Hamacantha carteri Topsent, 1904
Hamacantha clavisaepta (Topsent, 1896)
Hamacantha falcula (Bowerbank, 1874)
Hamacantha implicans Lundbeck, 1902
Hamacantha integra Topsent, 1904
Hamacantha johnsoni (Bowerbank, 1864)
Hamacantha lundbecki Topsent, 1904
Hamacantha megancistra Pulitzer-Finali, 1978
Hamacantha papillata Vosmaer, 1885
Hamacantha schmidtii (Carter, 1882)
Hamacantha (Hamacantha) azorica Topsent, 1904
Hamacantha (Hamacantha) carteri Topsent, 1904
Hamacantha (Hamacantha) johnsoni (Bowerbank, 1864)
Hamacantha (Hamacantha) lundbecki Topsent, 1904
Hamacantha (Hamacantha) megancistra Pulitzer-Finali, 1978
Hamacantha (Hamacantha) papillata Vosmaer, 1885
Harmothoe furcosetosa (Loshamn, 1981)
Harmothoe gilchristi Day, 1960
Harmothoe goreensis Augener, 1918
Harmothoe haliaeti McIntosh, 1876
Harmothoe hyalonemae Martin, Rossel & Uriz, 1992
Harmothoe imbricata (Linnaeus, 1767)
Harmothoe impar (Johnston, 1839)
Harmothoe ingolfiana Ditlevsen, 1917
Harmothoe johnstoni (McIntosh, 1876)
Harmothoe joubini Fauvel, 1913
Harmothoe lagiscoides Willey, 1902
Harmothoe ljungmani (Malmgren, 1867)
Harmothoe longisetis (Grube, 1863)
Harmothoe lunulata (Delle Chiaje, 1830)
Harmothoe marphysae McIntosh, 1876
Harmothoe maxillospinosa de Saint-Joseph, 1888
Harmothoe mcintoshi Tebble & Chambers, 1982
Harmothoe micraspis Eliason, 1962
Harmothoe minuta (Potts, 1910)
Harmothoe notochaetosa Lopez & Martin, 1996
Harmothoe oculinarum (Storm, 1879)
Harmothoe pagenstecheri Michaelsen, 1896
Harmothoe pokoui Intes & Le Loeuff, 1975
Harmothoe rarispina (M. Sars, 1861)
Harmothoe reticulata (Claparède, 1870)
Harmothoe serrata Day, 1963
Harmothoe spinifera (Ehlers, 1864)
Harmothoe talismani Roule, 1898
Harmothoe tenuisetis (McIntosh, 1885)
Harmothoe villosa (Malmgren, 1866)
Harmothoe violacea (Storm, 1879)
Harmothoe viridis Loshamn, 1981
Harmothoe zetlandica (McIntosh, 1876)
Harmothoe (Antinoella) sarsi (Kinberg in Malmgren, 1866)
Haliclona (Haliclona) laevis (Griessinger, 1971)
Haliclona (Haliclona) oculata (Linnaeus, 1759)
Haliclona (Haliclona) reptans (Griessinger, 1971)
Haliclona (Haliclona) simulans (Johnston, 1842)
Haliclona (Haliclona) urceola (Rathke & Vahl, 1806)
Haliclona (Haliclona) urceolus (Rathke & Vahl, 1806)
Haliclona (Haliclona) varia (Sarà, 1958)
Haliclona (Haliclona) venata (Sarà, 1960)
Haliclona (Reniera) aquaeductus (Schmidt, 1862)
Haliclona (Reniera) bowerbanki (Bowerbank, 1882)
Haliclona (Reniera) cinerea (Grant, 1826)
Haliclona (Reniera) citrina (Topsent, 1892)
Haliclona (Reniera) cratera (Schmidt, 1862)
Haliclona (Reniera) griessingeri van Lent & De Weerdt, 1987
Haliclona (Reniera) mediterranea Griessinger, 1971
Haliclona (Rhizoniera) grossa (Schmidt, 1864)
Haliclona (Rhizoniera) indistincta (Bowerbank, 1866)
Haliclona (Rhizoniera) pedunculata (Boury-Esnault, Pansini & Uriz, 1994)
Haliclona (Rhizoniera) rhizophora (Vacelet, 1969)
Haliclona (Rhizoniera) sarai (Pulitzer-Finali, 1969)
Haliclona (Rhizoniera) tromsoica (Hentschel, 1929)
Haliclona (Soestella) arenata Griessinger, 1971
Haliclona (Soestella) implexa (Schmidt, 1868)
Haliclona (Soestella) mamillata (Griessinger, 1971)
Haliclona (Soestella) mucosa (Griessinger, 1971)
Haliclona (Soestella) smithae de Weerdt, 2000
Haliclona (Soestella) valliculata (Griessinger, 1971)
Halicnemia arbuscula Topsent, 1928
Halicnemia azorica Topsent, 1904
Halicnemia geniculata Sarà, 1958
Goniada galaica Rioja, 1923
Goniada maculata Örsted, 1843
Goniada norvegica Örsted, 1845
Goniada pallida Arwidsson, 1898
Goniada vorax (Kinberg, 1866)
Goniadella bobretzkii (Annenkova, 1929)
Goniadella gracilis (Verrill, 1873)
Hemigellius arcofer (Vosmaer, 1885)
Hemigellius calyx (Ridley & Dendy, 1886)
Hemigellius hartlaubi (Hentschel, 1929)
Hemigellius porosus (Fristedt, 1887)
Hemigellius stylifer (Lendenfeld, 1897)
Hemimycale columella (Bowerbank, 1874)
Hemimycale rhodus (Hentschel, 1929)
Hemioniscus balani Buchholtz, 1866
Hemipodus septentrionalis Roule, 1896
Hemityphis tenuimanus Claus, 1879
Henricia abyssicola Farran, 1913
Henricia caudani (Koehler, 1895)
Henricia crossispika Heding, in Jägerskiöld, 1971
Henricia cylindrella (Sladen, 1883)
Henricia eschrichti (Müller & Troschel, 1842)
Henricia fisheri A.M. Clark, 1962
Henricia hedingi Madsen, 1987
Henricia knipowitschi Djakonov, 1950
Henricia lisa A.H. Clark, 1949
Henricia oculata (Pennant, 1777)
Henricia perforata (O.F. Müller, 1776)
Henricia perforata Rasmussen, 1965
Henricia pertusa (O.F. Müller, 1776)
Henricia sanguinolenta (O.F. Müller, 1776)
Henricia sanguinolenta Heding, 1935
Henricia sanguinolenta Nobre, 1930
Henricia sanguinolenta Rasmussen, 1965
Halichondria thompsoni Bowerbank, 1866
Halichondria topsenti de Laubenfels, 1936
Halichondria variantia Bowerbank, 1858
Halichondria velamentosa (Hansen, 1885)
Halichondria ventilabrum (Linnaeus, 1767)
Halichondria virgultosa Johnston, 1842
Halichondria (Eumastia) sitiens (Schmidt, 1870)
Halichondria (Halichondria) agglomerans Cabioch, 1968
Halichondria (Halichondria) almae (Carballo, Uriz & Garcia-Gomez, 1996)
Halichondria (Halichondria) arenosa Hentschel, 1929
Halichondria (Halichondria) aspera Lieberkühn, 1859
Halichondria (Halichondria) axinelloides Swartschewsky, 1906
Halichondria (Halichondria) bowerbanki Burton, 1930
Halichondria (Halichondria) brunnea (Schmidt, 1868)
Halichondria (Halichondria) colossea Lundbeck, 1902
Halichondria (Halichondria) contorta (Sarà, 1961)
Halichondria (Halichondria) convolvens Sarà, 1960
Halichondria (Halichondria) cornuloides Burton, 1954
Halichondria (Halichondria) diversispiculata Burton, 1930
Halichondria (Halichondria) dubia (Czerniavsky, 1880)
Halichondria (Halichondria) foraminosa (Czerniavsky, 1880)
Halichondria (Halichondria) genitrix (Schmidt, 1870)
Halichondria (Halichondria) heterorrhaphis Breitfuss, 1912
Halichondria (Halichondria) labiata Hentschel, 1929
Halichondria (Halichondria) lambei Brøndsted, 1933
Halichondria (Halichondria) leuconoides Topsent, 1890
Halichondria (Halichondria) longispicula (Czerniavsky, 1880)
Halichondria (Halichondria) normani Burton, 1930
Halichondria (Halichondria) oblonga (Hansen, 1885)
Halichondria (Halichondria) osculum Lundbeck, 1902
Geodia tuber Lendenfeld, 1903
Geodia tuberosa (Topsent, 1892)
Geryonia proboscidalis (Forsskål, 1775)
Gesaia elegans (Fauvel, 1911)
Heteropolynoe nordgaardi Bidenkap, 1907
Heteropyramis crystallina (Moser, 1925)
Heterospio longissima Ehlers, 1874
Heterospio mediterranea Laubier, Picard & Ramos, 1973
Heterospio reducta Laubier, Picard & Ramos, 1973
Heteroxya corticata Topsent, 1898
Hexactinella tubulosa (Schulze, 1886)
Hexadella dedritifera Topsent, 1913
Hexadella racovitzai Topsent, 1896
Hexaster obscurus Perrier, 1891
Higginsia mediterranea Pulitzer-Finali, 1978
Higginsia pumila (Keller, 1889)
Higginsia pyriformis Brøndsted, 1916
Higginsia strigilata (Lamarck, 1814)
Higginsia thielei Topsent, 1898
Hippasteria cornuta Gray, 1840
Hippasteria europaea Gray, 1840
Hippasteria insignis Dons, 1938
Hippasteria phrygiana (Parelius, 1768)
Hippasteria plana Gray, 1840
Hippasteria (Nehippasteria) insignis Dons, 1938
Hipponoa gaudichaudi [Auct. genus misspelling]
Hippopodius hippopus (Forsskål, 1776)
Hircinia chevreuxi Topsent, 1894
Hircinia collectrix (Poléjaeff, 1884)
Hircinia condensa Topsent, 1894
Hircinia digitata Topsent, 1894
Hircinia oros Schmidt, 1864
Hircinia stipitata Topsent, 1894
Hircinia variabilis Schmidt, 1862
Halecium beanii (Johnston, 1838)
Halecium minimum Schneider, 1898
Halecium reflexum Stechow, 1919
Holoxea furtiva Topsent, 1892
Holtenia carpenteri Thomson, 1869
Homaxinella subdola (Bowerbank, 1866)
Homoderma sycandra Lendenfeld, 1895
Homoeodictya foliata (Bowerbank, 1874)
Hoplangia durotrix Gosse, 1860
Hoplaster spinosus Perrier, in Milne-Edwards, 1882
Hyalinoecia bilineata Baird, 1870
Hyalinoecia brementi Fauvel, 1916
Hyalinoecia edwardsi Roule, 1898
Hyalinoecia fauveli Rioja, 1918
Hyalinoecia robusta Southward, 1977
Hyalinoecia tubicola (O.F. Müller, 1776)
Hyalonema arcticus Hansen, 1885
Hyalonema lusitanicum Bocage, 1864
Hyalonema thomsoni Marshall, 1875
Hyalonema thomsonis Marshall, 1875
Hyalonema (Cyliconema) infundibulum Topsent, 1896
Hyalonema (Leptonema) lusitanicum Bocage, 1864
Hyalopomatopsis marenzelleri (Langerhans, 1884)
Hyalopomatus claparedii Marenzeller, 1878
Hyalopomatus marenzelleri Langerhans, 1884
Hyalopomatus variorugosus Ben-Eliahu & Fiege, 1996
Hybocodon prolifer Agassiz, 1860
Hydractinia aculeata (Wagner, 1833)
Hydractinia arctica (Jäderholm, 1902)
Hydractinia areolata Alder, 1862
Hydractinia calderi Bouillon, Medel & Peña Cantero, 1997
Hydractinia carnea (M. Sars, 1846)
Hydractinia claviformis (Bouillon, 1965)
Hydractinia exigua (Haeckel, 1880)
Halichondria (Halichondria) panicea (Pallas, 1766)
Halichondria (Halichondria) pontica (Czerniavsky, 1880)
Halichondria (Halichondria) renieroides (Fristedt, 1887)
Halichondria (Halichondria) tenera (Marenzeller, 1878)
Halichondria (Halichondria) tenuispiculata Brøndsted, 1916
Halichondria (Halichondria) velamentosa (Hansen, 1885)
Haliclona accomodata (Schmidt, 1868)
Haliclona alba (Schmidt, 1862)
Haliclona albapontica (Czerniavsky, 1880)
Haliclona angulata (Bowerbank, 1866)
Haliclona aperta (Sarà, 1960)
Haliclona aquaeductus (Schmidt, 1862)
Haliclona arctica (Fristedt, 1887)
Haliclona arctica (Hentschel, 1916)
Haliclona arenata Griessinger, 1971
Haliclona calamus (Lundbeck, 1902)
Haliclona calyx (Ridley & Dendy, 1886)
Haliclona clavata (Levinsen, 1887)
Haliclona columbae (Walker, 1808)
Haliclona cratera (Schmidt, 1862)
Haliclona cribrata (Pulitzer-Finali, 1983)
Haliclona cribrosa (Czerniavsky, 1880)
Haliclona cylindrigera (Czerniavsky, 1880)
Haliclona digitata (Schmidt, 1862)
Haliclona elegans (Lendenfeld, 1887)
Haliclona fibulata (Schmidt, 1862)
Haliclona fistulosa (Bowerbank, 1866)
Haliclona flavescens (Topsent, 1893)
Haliclona folium (Schmidt, 1870)
Haliclona foraminosa (Czerniavsky, 1880)
Haliclona gracilis (Miklucho-Maclay, 1870)
Haliclona griessingeri Van Lent & De Weerdt, 1987
Haliclona grimmi (Czerniavsky, 1880)
Hymantho normani Burton, 1930
Hymedesmia baculifera (Topsent, 1901)
Hymedesmia brondstedi Burton, 1930
Hymedesmia coriacea (Fristedt, 1885)
Hymedesmia crux (Schmidt, 1875)
Hymedesmia depressa Topsent, 1928
Hymedesmia digitata Lundbeck, 1910
Hymedesmia donsi Alander, 1937
Hymedesmia ebria Alander, 1937
Hymedesmia gracilisigma Topsent, 1928
Hymedesmia hallezi Topsent, 1894
Hymedesmia hallmanni Topsent, 1928
Hymedesmia helgae Stephens, 1921
Hymedesmia inflata Vacelet, 1969
Hymedesmia koehleri (Topsent, 1896)
Hymedesmia laevistylus Lundbeck, 1910
Hymedesmia lenta Descatoire, 1966
Hymedesmia lieberkuehni Burton, 1930
Hymedesmia longistylus Lundbeck, 1910
Hymedesmia mertoni Hentschel, 1912
Hymedesmia mutabilis Topsent, 1904
Hymedesmia oxneri Topsent, 1928
Hymedesmia pachychela Topsent, 1928
Hymedesmia paupertas (Bowerbank, 1866)
Hymedesmia peachi Bowerbank, 1882
Hymedesmia pilata Bowerbank, 1882
Hymedesmia primitiva Lundbeck, 1910
Hymedesmia procumbens Lundbeck, 1910
Hymedesmia similis Lundbeck, 1910
Hymedesmia spinosa Stephens, 1916
Hymedesmia stellata Bowerbank, 1866
Hymedesmia tristellata Topsent, 1892
Hymedesmia truncata Lundbeck, 1910
Hymedesmia unistellata Topsent, 1892
Hymedesmia zetlandica Bowerbank, 1864
Hydractinia hooperi (Sigerfoos, 1899)
Hydractinia humilis Bonnevie, 1898
Hydractinia inermis (Allman, 1872)
Hydractinia ingolfi Kramp, 1932
Hydractinia ornata Bonnevie, 1899
Hydractinia pruvoti Motz-Kossowska, 1905
Hydractinia sarsii (Steenstrup, 1850)
Hydractinia serrata Kramp, 1943
Hydranthea aloysii (Zoja, 1893)
Hydrasterias sexradiata (Perrier, in Milne-Edwards, 1882)
Hydroides elegans (Haswell, 1883)
Hydroides ezoensis Okuda, 1934
Hydroides homoceros Pixell, 1913
Hydroides minax (Grube, 1878)
Hydroides nigra Zibrowius, 1971
Hydroides norvegica Gunnerus, 1768
Hydroides norvegicus Gunnerus, 1768
Hydroides pseudouncinata Zibrowius, 1968
Hydroides steinitzi Ben-Eliahu, 1972
Hydroides stoichadon Zibrowius, 1971
Hygrosoma petersii (A. Agassiz, 1880)
Hygrosoma uranus (Thomson, 1877)
Hymantho bitoxa Burton, 1930
Hymeniacidon luxurians (Lieberkühn, 1859)
Hymeniacidon macilenta Bowerbank, 1866
Hymeniacidon membrana Bowerbank, 1866
Hymeniacidon mixta (Sarà, 1958)
Hymeniacidon pallescens Topsent, 1892
Hymeniacidon paupertas Bowerbank, 1866
Hymeniacidon perarmatus Bowerbank, 1866
Hymeniacidon perleve (Montagu, 1814)
Hymeniacidon perlevis (Montagu, 1814)
Hymeniacidon placentula Bowerbank, 1874
Hymeniacidon plumigera Bowerbank, 1874
Hymedesmia (Hymedesmia) basispinosa Lundbeck, 1910
Hymedesmia (Hymedesmia) bocki Alander, 1942
Hymedesmia (Hymedesmia) bowerbanki Lundbeck, 1910
Hymedesmia (Hymedesmia) bractea Lundbeck, 1910
Hymedesmia (Hymedesmia) castanea Sarà, 1964
Hymedesmia (Hymedesmia) chlorosa Alander, 1942
Hymedesmia (Hymedesmia) clavigera Lundbeck, 1910
Hymedesmia (Hymedesmia) cohesibacilla Goodwin & Picton, 2009
Hymedesmia (Hymedesmia) consanguinea Lundbeck, 1910
Hymedesmia (Hymedesmia) cordichela Alander, 1942
Hymedesmia (Hymedesmia) cratera Goodwin & Picton, 2009
Hymedesmia (Hymedesmia) crux (Schmidt, 1875)
Hymedesmia (Hymedesmia) curvichela Lundbeck, 1910
Hymedesmia (Hymedesmia) depressa Topsent, 1928
Hymedesmia (Hymedesmia) digitata Lundbeck, 1910
Hymedesmia (Hymedesmia) donsi Alander, 1937
Hymedesmia (Hymedesmia) dubia Lundbeck, 1910
Hymedesmia (Hymedesmia) ebria Alander, 1937
Hymedesmia (Hymedesmia) filifera (Schmidt, 1875)
Hymedesmia (Hymedesmia) gisleni Alander, 1942
Hymedesmia (Hymedesmia) gracilisigma Topsent, 1928
Hymedesmia (Hymedesmia) grandis Lundbeck, 1910
Hymedesmia (Hymedesmia) gunhildae Alander, 1942
Hymedesmia (Hymedesmia) gustafsoni Alander, 1942
Hymedesmia (Hymedesmia) hallmanni Topsent, 1928
Hymedesmia (Hymedesmia) helgae Stephens, 1921
Hymedesmia (Hymedesmia) inflata Vacelet, 1969
Hymedesmia (Hymedesmia) irregularis Lundbeck, 1910
Hymedesmia (Hymedesmia) jecusculum (Bowerbank, 1866)
Hymedesmia (Hymedesmia) jugalis Topsent, 1928
Harmothoe (Austrolaenilla) mollis (M. Sars in G.O. Sars, 1872)
Hastatus fragilis Fristedt, 1885
Hastatus mamillaris Fristedt, 1885
Hauchiella tribullata (McIntosh, 1869)
Hedgpethia eleommata Child, 1998
Hediste diversicolor (O.F. Müller, 1776)
Heliopathes heterorhodzos (Cooper, 1909)
Helophloeina stylivarians Topsent, 1929
Hemectyon atlanticus (Lévi & Vacelet, 1958)
Hemiarthrus abdominalis (Krøyer, 1840)
Hemiaster expergitus Lovén, 1874
Hemiaster gibbosus A. Agassiz, 1879
Hemiaster mentzii A. Agassiz, 1883
Hemiaster zonatus A. Agassiz, 1879
Isocirrus planiceps (M. Sars in G.O. Sars, 1872)
Isodictya barleei Bowerbank, 1866
Isodictya coriacea Bowerbank, 1874
Isodictya dissimilis Bowerbank, 1866
Isodictya ferula Bowerbank, 1866
Isodictya fimbriata Bowerbank, 1866
Isodictya fistulosa Bowerbank, 1866
Isodictya foliata Bowerbank in Norman, 1869
Isodictya funalis Bowerbank in Jeffreys & Norman, 1875
Isodictya histodermella de Laubenfels, 1942
Isodictya indistincta Bowerbank, 1866
Isodictya laciniosa Bowerbank in Norman, 1869
Isodictya lobata (Montagu, 1814)
Isodictya pallida Bowerbank, 1866
Isodictya palmata (Ellis & Solander, 1786)
Isodictya parasitica (Montagu, 1814)
Isodictya pocillum Bowerbank, 1866
Isodictya rigida (Lambe, 1893)
Isodictya robusta Bowerbank, 1866
Hamacantha (Hamacantha) schmidtii (Carter, 1882)
Hamacantha (Vomerula) azorica Topsent, 1904
Hamacantha (Vomerula) carteri Topsent, 1904
Hamacantha (Vomerula) falcula (Bowerbank, 1874)
Hamacantha (Vomerula) integra Topsent, 1904
Hamacantha (Vomerula) megancistra Pulitzer-Finali, 1978
Hamacantha (Vomerula) papillata Vosmaer, 1885
Hamigera stipitata Arnesen, 1903
Haplomesus biscayensis Chardy, 1975
Haplomesus tropicalis Menzies, 1962
Haploscoloplos bifurcatus Hartman, 1957
Haploscoloplos kerguelensis (McIntosh, 1885)
Haplosyllis chamaeleon Laubier, 1960
Haplosyllis depressa Augener, 1913
Haplosyllis granulosa (Lattig, San Martín & Martin, 2007)
Haplosyllis oligochaeta
Haplosyllis spongicola (Grube, 1855)
Haplosyllis spongiphila (Verrill, 1885)
Haplosyllis villogorgicola Martin, Núñez, Riera & Gil, 2000
Ilyaster mirabilis Danielssen & Koren, 1882
Ilyphagus ilyvestis Hartman, 1960
Imajimaea draculai (San Martín & López, 2002)
Inermonephtys foretmontardoi Ravara, Cunha & Pleijel, 2010
Inermonephtys inermis (Ehlers, 1887)
Inermosyllis balearica (San Martín, 1982)
Inflatella pellicula Schmidt, 1875
Inflatella rhodus (Hentschel, 1929)
Inflatella viridis (Topsent, 1890)
Ione thoracica (Montagu, 1808)
Ione vicina Bonnier, 1900
Iophon chelifer Ridley & Dendy, 1886
Iophon dogieli Koltun, 1955
Iophon dubium (Hansen, 1885)
Hymeniacidon plumosa (Montagu, 1814)
Hymeniacidon rugosa (Schmidt, 1868)
Hymeniacidon sanguinea (Grant, 1826)
Hymeniacidon simplex (Bowerbank, 1866)
Hymeniacidon simplicima (Bowerbank, 1874)
Hymeniacidon suberea (Montagu, 1814)
Hymeniacidon varians Bowerbank, 1882
Hymeniacidon variantia (Bowerbank, 1858)
Hymeniacidon virgulata Bowerbank, 1882
Hymenodiscus coronata (Sars G.O., 1872)
Hymeraphia breeni Picton & Goodwin, 2007
Hymeraphia coronula Bowerbank, 1874
Hymeraphia elongata Picton & Goodwin, 2007
Hymeraphia geniculata Topsent, 1892
Hymeraphia minima Topsent, 1892
Hymeraphia mucronata Topsent, 1904
Hymeraphia spinispinosa Topsent, 1904
Hymeraphia spitzbergensis Fristedt, 1887
Hymeraphia tuberosocapitata Topsent, 1892
Hymeraphia tuberosocapitatum Topsent, 1892
Hymeraphia vermiculata Bowerbank, 1866
Hymeraphia verticillata Bowerbank, 1866
Hymeraphia viridis Topsent, 1889
Hymerhabdia contracta Sarà & Siribelli, 1960
Hymerhabdia intermedia Sarà & Siribelli, 1960
Hymerhabdia oxytrunca Topsent, 1904
Hymerhabdia papillosa Sarà & Siribelli, 1960
Hymerhabdia typica Topsent, 1892
Hymetrochota rotula Topsent, 1904
Hymetrochota topsenti (Burton, 1930)
Hymoxenia inflata Alander, 1937
Hypania antiqua (Ostrooumouff, 1896)
Hypania invalida (Grube, 1860)
Hypaniola kowalewskii (Grimm in Annenkova, 1927)
Hymedesmia (Hymedesmia) lacera Lundbeck, 1910
Hymedesmia (Hymedesmia) laevistylus Lundbeck, 1910
Hymedesmia (Hymedesmia) lamina Lundbeck, 1910
Hymedesmia (Hymedesmia) latrunculioides Lundbeck, 1910
Hymedesmia (Hymedesmia) lenta Descatoire, 1966
Hymedesmia (Hymedesmia) levis Lundbeck, 1910
Hymedesmia (Hymedesmia) lobichela Topsent, 1928
Hymedesmia (Hymedesmia) longistylus Lundbeck, 1910
Hymedesmia (Hymedesmia) macrosigma Lundbeck, 1910
Hymedesmia (Hymedesmia) mamillaris (Fristedt, 1885)
Hymedesmia (Hymedesmia) matthesi Arndt, 1941
Hymedesmia (Hymedesmia) mertoni Hentschel, 1912
Hymedesmia (Hymedesmia) microchela Alander, 1942
Hymedesmia (Hymedesmia) minuta Alander, 1935
Hymedesmia (Hymedesmia) mollis Lundbeck, 1910
Hymedesmia (Hymedesmia) mucronata (Topsent, 1904)
Hymedesmia (Hymedesmia) mutabilis Topsent, 1904
Hymedesmia (Hymedesmia) norvegica Thiele, 1903
Hymedesmia (Hymedesmia) omissa Topsent, 1938
Hymedesmia (Hymedesmia) oxneri Topsent, 1928
Hymedesmia (Hymedesmia) pachychela Topsent, 1928
Hymedesmia (Hymedesmia) palmatichela Topsent, 1928
Hymedesmia (Hymedesmia) peachi Bowerbank, 1882
Hymedesmia (Hymedesmia) pennata Brøndsted, 1932
Hymedesmia (Hymedesmia) pilata Bowerbank, 1882
Hymedesmia (Hymedesmia) planisigma Topsent, 1928
Hymedesmia (Hymedesmia) plicata Topsent, 1928
Hymedesmia (Hymedesmia) poicilacantha Alander, 1942
Hymedesmia (Hymedesmia) procumbens Lundbeck, 1910
Hymedesmia (Hymedesmia) proteidea (Schmidt, 1868)
Henricia skorikovi Djakonov, 1950
Henricia solida Djakonov, 1950
Henricia spongiosa (O. Fabricius, 1780)
Herceus orientalis Koltun, 1959
Hermodice carunculata (Pallas, 1766)
Hermonia hystrix (Savigny in Lamarck, 1818)
Hertwigia falcifera Schmidt, 1880
Hesione splendida Savigny in Lamarck, 1818
Hesione steenstrupii Quatrefages, 1866
Hesionides arenaria Friedrich, 1937
Hesionides gohari Hartmann-Schröder, 1960
Hesionides maxima Westheide, 1967
Hesionura augeneri (Friedrich, 1937)
Hesionura coineaui (Laubier, 1962)
Hesionura elongata (Southern, 1914)
Hesionura serrata (Hartmann-Schröder, 1960)
Hesiospina aurantiaca (M. Sars, 1862)
Hesiospina similis (Hessle, 1925)
Hesiosyllis enigmatica Wesenberg Lund, 1950
Heteroclymene robusta Arwidsson, 1906
Heteromastus filiformis (Claparède, 1864)
Heteromeyenia baileyi (Bowerbank, 1863)
Heteronema erecta Keller, 1889
Heteropale bellis Johnson, 1897
Heteropathes heterorhodzos (Cooper, 1909)
Heteropia ramosa (Carter, 1886)
Lacydonia laureci Laubier, 1975
Lacydonia miranda Marion & Bobretzky, 1875
Laeospira corallinae (de Silva & Knight-Jones, 1962)
Laeospira moerchi (Levinsen, 1883)
Laetmonice filicornis Kinberg, 1856
Laetmonice producta Grube, 1876
Lafoea fruticosa (Sars, 1851)
Lafoea grandis Hincks, 1874
Iophon dubius (Hansen, 1885)
Iophon frigidum Lundbeck, 1909
Iophon frigidus Lundbeck, 1909
Iophon hyndmani (Bowerbank, 1858)
Iophon ingalli (Bowerbank, 1866)
Iophon nigricans (Bowerbank, 1858)
Iophon pommeraniae Thiele, 1903
Iophon scandens (Bowerbank, 1866)
Iophon spinulentum (Bowerbank, 1866)
Iophon variopocillatum Alander, 1942
Iophon variopocillatus Alander, 1942
Iophonopsis nigricans (Bowerbank, 1866)
Iophonopsis pattersoni (Bowerbank, 1858)
Iotroata abyssi (Carter, 1874)
Iotroata acanthostylifera (Stephens, 1916)
Iotroata magna (Lambe, 1900)
Iotroata oxeata (Lundbeck, 1905)
Iotroata polydentata (Lundbeck, 1905)
Iotroata rotula (Topsent, 1904)
Iotroata rotulancora (Lundbeck, 1905)
Iotroata spinosa (Lundbeck, 1905)
Iotroata topsenti (Burton, 1930)
Iotroata varidens (Lundbeck, 1905)
Iotrochota abyssi (Carter, 1874)
Iotrochota acanthostylifera Stephens, 1916
Iotrochota affinis Lundbeck, 1905
Iotrochota magna Lambe, 1900
Iotrochota oxeata Lundbeck, 1905
Iotrochota polydentata Lundbeck, 1905
Iotrochota rotulancora Lundbeck, 1905
Iotrochota spinosa Lundbeck, 1905
Iotrochota varidens Lundbeck, 1905
Iphitime cuenoti Fauvel, 1914
Iphitime hartmanae Kirkegaard, 1977
Iphitime paguri Fage & Legendre, 1934
Hymedesmia (Hymedesmia) proxima Lundbeck, 1910
Hymedesmia (Hymedesmia) pustula (Fristedt, 1887)
Hymedesmia (Hymedesmia) rathlinia Goodwin & Picton, 2009
Hymedesmia (Hymedesmia) rissoi Topsent, 1936
Hymedesmia (Hymedesmia) rugosa Lundbeck, 1910
Hymedesmia (Hymedesmia) senegalensis Lévi, 1956
Hymedesmia (Hymedesmia) similis Lundbeck, 1910
Hymedesmia (Hymedesmia) sirventi (Topsent, 1927)
Hymedesmia (Hymedesmia) spinosa Stephens, 1916
Hymedesmia (Hymedesmia) stellifera Goodwin & Picton, 2009
Hymedesmia (Hymedesmia) storea Lundbeck, 1910
Hymedesmia (Hymedesmia) tenuisclera (Lundbeck, 1910)
Hymedesmia (Hymedesmia) tenuisigma Lundbeck, 1910
Hymedesmia (Hymedesmia) truncata Lundbeck, 1910
Hymedesmia (Hymedesmia) umbellifera (Topsent, 1904)
Hymedesmia (Hymedesmia) umbelliformis Goodwin & Picton, 2009
Hymedesmia (Hymedesmia) veneta (Schmidt, 1862)
Hymedesmia (Hymedesmia) versicolor (Topsent, 1893)
Hymedesmia (Hymedesmia) vidua (Schmidt, 1875)
Hymedesmia (Hymedesmia) vomerula Topsent, 1928
Hymedesmia (Hymedesmia) zetlandica Bowerbank, 1864
Hymedesmia (Stylopus) acerata (Topsent, 1904)
Hymedesmia (Stylopus) crami Goodwin & Picton, 2009
Hymedesmia (Stylopus) dermata Lundbeck, 1910
Hymedesmia (Stylopus) obtusata (Topsent, 1904)
Hymedesmia (Stylopus) odhneri (Alander, 1942)
Hymedesmia (Stylopus) primitiva Lundbeck, 1910
Hymedesmia (Stylopus) stephensi Burton, 1930
Hymedesmia (Stylopus) stylifera (Alander, 1942)
Hymenancora biscutella (Topsent, 1904)
Haliclona groenlandica (Fristedt, 1887)
Haliclona grossa (Schmidt, 1864)
Haliclona hirsuta (Swartschewsky, 1906)
Haliclona hyalina (Schmidt, 1873)
Haliclona implexa (Schmidt, 1868)
Haliclona indistincta (Bowerbank, 1866)
Haliclona inflata (Schmidt, 1868)
Haliclona irregularis (Czerniavsky, 1880)
Haliclona loosanoffi Hartman, 1958
Haliclona mamillata (Griessinger, 1971)
Haliclona mediterranea Griessinger, 1971
Haliclona membranacea (Schmidt, 1868)
Haliclona merejkowskii (Swartschewsky, 1906)
Haliclona mollicula (Lundbeck, 1902)
Haliclona mollis (Lambe, 1893)
Haliclona mollis (Schmidt, 1870)
Haliclona nigricans (Czerniavsky, 1880)
Haliclona oculata (Linnaeus, 1759)
Haliclona omissa (Griessinger, 1971)
Lasiaster villosus Sladen, 1889
Latrunculia biannulata Topsent, 1892
Latrunculia insignis Topsent, 1890
Latrunculia rugosa (Vacelet, 1969)
Latrunculia tarentina Pulitzer-Finali, 1983
Latrunculia tricincta Hentschel, 1929
Laubieriellus salzi (Laubier, 1970)
Laubieriopsis brevis (Hartman, 1967)
Laubieriopsis cabiochi (Amoureux, 1982)
Leaena abranchiata (M. Sars, 1865)
Leaena ebranchiata (M. Sars, 1865)
Leanira hystricis Ehlers, 1874
Leiocapitella glabra Hartman, 1947
Leiochone johnstoni McIntosh, 1915
Leiochone leiopygos (Grube, 1860)
Isodictya rosea Bowerbank, 1866
Isodictya spinispiculum Carter, 1876
Isodictya tenera Marenzeller, 1878
Isolda pulchella Müller in Grube, 1858
Isolda whydahaensis Augener, 1918
Isops canaliculata (Schmidt, 1868)
Isops intuta (Topsent, 1892)
Isops loricata (Lendenfeld, 1894)
Isops maculosa Vosmaer, 1894
Isops pachydermata Sollas, 1886
Isops pallida Vosmaer, 1882
Isops phlegraei Sollas, 1880
Iulopis loveni Bovallius, 1887
Janita spinosa (Langerhans, 1884)
Janua pagenstecheri (Quatrefages, 1866)
Janua (Dexiospira) marioni (Caullery & Mesnil, 1897)
Janua (Dexiospira) pusilloides (Bush, 1905)
Janulum filholi (Topsent, 1890)
Janulum spinispiculum (Carter, 1876)
Jasmineira candela (Grube, 1863)
Jasmineira caudata Langerhans, 1880
Jasmineira elegans Saint-Joseph, 1894
Jasmineira oculata Langerhans, 1884
Jasmineira schaudinni Augener, 1912
Jaspis dendyi (Sollas, 1888)
Jaspis eudermis Lévi & Vacelet, 1958
Jaspis inconditus (Topsent, 1892)
Jaspis johnstonii (Schmidt, 1862)
Johnstonia clymenoides Quatrefages, 1866
Josephella marenzelleri Caullery & Mesnil, 1896
Joyeuxia tubulosa Topsent, 1904
Joyeuxia viridis Topsent, 1890
Leuconia ananas (Montagu, 1814)
Leuconia balearica (Lackschewitz, 1886)
Hircinia verrucosa Ferrer-Hernandez, 1914
Hircinia vestibulata Szymanski, 1904
Histocidaris purpurata (Thomson, 1872)
Histodermella ingolfi Lundbeck, 1910
Histriobdella homari Beneden, 1858
Holanthus expergitus (Lovén, 1874)
Lepidasthenia elegans (Grube, 1840)
Lepidasthenia maculata Potts, 1910
Lepidonotus brevicornis Quatrefages, 1865
Lepidonotus carinulatus (Grube, 1870)
Lepidonotus clava (Montagu, 1808)
Lepidonotus squamatus (Linnaeus, 1758)
Lepidonotus tenuisetosus (Gravier, 1902)
Leponiscus anatifae Giard, 1887
Leptasterias arctica (Murdoch, 1885)
Leptasterias canuti Heding, 1936
Leptasterias clavispina Heding, 1936
Leptasterias danica (Levinsen, 1887)
Leptasterias degerboelli Heding, 1935
Leptasterias floccosa (Levinsen, 1887)
Leptasterias groenlandica (Steenstrup, 1857)
Leptasterias hexactis (Stimpson, 1862)
Leptasterias hyperborea (Danielssen & Koren, 1882)
Leptasterias islandica Levinsen, 1877
Leptasterias muelleri (M. Sars, 1846)
Leptasterias polaris (Müller & Troschel, 1842)
Leptasterias (Endogenasterias) groenlandica (Steenstrup, 1857)
Leptasterias (Hexasterias) polaris (Müller & Troschel, 1842)
Leptasterias (Leptasterias) danica (Levinsen, 1887)
Leptasterias (Leptasterias) hyperborea (Danielssen & Koren, 1882)
Leptasterias (Leptasterias) islandica (Levinsen, 1887)
Leptasterias (Leptasterias) muelleri (M. Sars, 1846)
Ircinia chevreuxi (Topsent, 1894)
Ircinia collectrix (Poléjaeff, 1884)
Ircinia condensa (Topsent, 1894)
Ircinia digitata (Topsent, 1894)
Ircinia foetida (Schmidt, 1862)
Ircinia lingua (Schmidt, 1868)
Ircinia muscarum (Schmidt, 1864)
Ircinia oros (Schmidt, 1864)
Ircinia paucifilamentosa Vacelet, 1961
Ircinia procumbens (Polejaeff, 1884)
Ircinia retidermata Pulitzer-Finali & Pronzato, 1981
Ircinia spinosula (Schmidt, 1862)
Ircinia stipitata (Topsent, 1894)
Ircinia strobilina (Lamarck, 1816)
Ircinia verrucosa (Ferrer-Hernandez, 1914)
Ircinia vestibulata (Szymanski, 1904)
Irmula spissipes Ehlers, 1913
Ischnomesus bispinosus (Sars, 1868)
Leptognathia voringii
Leptolabis assimilis Lundbeck, 1910
Leptolabis convergens Topsent, 1928
Leptolabis forcipula Topsent, 1904
Leptolabis luciensis (Topsent, 1888)
Leptolabis megachela Maldonado, 1992
Leptonereis glauca (Claparède, 1870)
Leptosia acerata Topsent, 1904
Leptosia biscutella Topsent, 1904
Leptosia exilis Topsent, 1892
Leptosia obtusata Topsent, 1904
Leptosia pecqueryi (Topsent, 1890)
Leptosia rhaphigena Topsent, 1904
Leptosia schmidti Topsent, 1898
Leptosia triungulata Topsent, 1928
Leptychaster arcticus (M. Sars, 1851)
Lestrigonus latissimus (Bovallius, 1889)
Lagis koreni Malmgren, 1866
Lagisca aequispina Langerhans, 1884
Lagisca elisabethae McIntosh, 1900
Lagisca extenuata (Grube, 1840)
Lagisca hubrechti (McIntosh, 1900)
Lagisca peracuta McIntosh, 1885
Lagisca talismani (Roule, 1898)
Laminospongia subtilis Pulitzer-Finali, 1983
Lamippina aciculifera (Zulueta, 1908)
Lanassa nordenskioldi Malmgren, 1866
Lanassa praecox (Saint-Joseph, 1899)
Lanassa venusta (Malm, 1874)
Langerhansia beneliahui Campoy & Alquézar, 1982
Langerhansia binocula Czerniavsky, 1881
Langerhansia caeca Katzmann, 1973
Langerhansia cornuta (Rathke, 1843)
Langerhansia heterochaeta (Moore, 1909)
Langerhansia rosea (Langerhans, 1879)
Lanice conchilega (Pallas, 1766)
Lanuginella pupa Schmidt, 1870
Laomedea exigua M. Sars, 1857
Laonice appelloefi Söderström, 1920
Laonice bahusiensis Söderström, 1920
Laonice cirrata (M. Sars, 1851)
Laonice sarsi Söderström, 1920
Laonome kroeyeri [auctt.]
Laonome kroyeri Malmgren, 1866
Laonome salmacidis Claparède, 1869
Laphania boecki Malmgren, 1866
Loxosomella kefersteinii (Claparède, 1867)
Lucicutia simulans Sars G.O., 1920
Lugia pterophora (Ehlers, 1864)
Luidia africana Sladen, 1889
Luidia atlantidea Madsen, 1950
Luidia ciliaris (Philippi, 1837)
Hypereteone foliosa (Quatrefages, 1865)
Hyperietta luzoni (Stebbing, 1888)
Hyperionyx macrodactylus (Stephensen, 1924)
Hyphalaster antonii Perrier, 1885
Hyphalaster fortis Koehler, 1907
Hyphalaster gracilis Koehler, 1907
Hyphalaster inermis Sladen, 1883
Hyphalaster parfaiti Perrier, 1885
Hypleurochilus bananensis (Poll, 1959)
Hypsicomus phaeotaenia (Schmarda, 1861)
Hypsicomus stichophthalmos (Grube, 1863)
Hypsiechinus coronatus Mortensen, 1903
Hyrtios collectrix (Schulze, 1880)
Hyrtios communis (Carter, 1885)
Hyrtios elegans (Lendenfeld, 1888)
Iasis cylindrica (Cuvier, 1804)
Iasis zonaria (Pallas, 1774)
Icasterias panopla (Stuxberg, 1878)
Ichthyotomus sanguinarius Eisig, 1906
Linckia laevigata (Linnaeus, 1758)
Linopherus canariensis Langerhans, 1881
Linopherus hemuli (Fauchald, 1972)
Linopherus paucibranchiata (Fauvel, 1932)
Lipkea ruspoliana Vogt, 1886
Lipobranchius jeffreysii (McIntosh, 1869)
Liriopsis pygmaea (Rathke, 1843)
Lissodendoryx amaknakensis (Lambe, 1895)
Lissodendoryx basispinosa Sarà, 1958
Lissodendoryx caduca (Schmidt, 1868)
Lissodendoryx certa (Topsent, 1892)
Lissodendoryx complicata (Hansen, 1885)
Lissodendoryx corallorhizoides (Fristedt, 1887)
Lissodendoryx fertilior Topsent, 1904
Lissodendoryx firma (Lambe, 1895)
Halicnemia loennbergi Alander, 1942
Halicnemia loricata Sarà, 1958
Halicnemia verticillata (Bowerbank, 1866)
Halicometes elongata Boury-Esnault, Pansini & Uriz, 1994
Haliris lamothei (Dautzenberg & H. Fischer, 1897)
Halisarca dujardinii Johnston, 1842
Halisarca guttula Schmidt, 1864
Halisarca metschnikovi Lévi, 1953
Halistella pierantonii Sarà, 1958
Halistemma amphytridis (Lesueur & Petit, 1807)
Halistemma foliacea (Quoy & Gaimard, 1833)
Halistemma rubrum (Vogt, 1852)
Kefersteinia cirrata (Keferstein, 1862)
Kephyes ovata (Keferstein & Ehlers, 1860)
Kesun gravieri (McIntosh, 1908)
Kirchenpaueria similis (Hincks, 1861)
Koellikerina fasciculata (Péron & Lesueur, 1810)
Korethraster hispidus Wyville Thomson, 1873
Korethraster setosus Perrier, in Milne-Edwards, 1882
Krithe bartonensis (Jones, 1857)
Krohnia lepidota (Krohn, 1845)
Labratrema minimum (Stossich, 1887)
Labrorostratus jonicus Tenerelli, 1961
Labrorostratus parasiticus Saint-Joseph, 1888
Lithoplocamia spinispiculum (Carter, 1876)
Lithumena lobatus Renier, 1828
Litocorsa stremma Pearson, 1970
Loimia arborea Moore, 1903
Loimia medusa (Savigny in Lamarck, 1818)
Lonchotaster tartareus Sladen, 1889
Lopadorhynchus nationalis Reibisch, 1895
Lopadorhynchus uncinatus Fauvel, 1915
Lopadorrhynchus appendiculatus Southern, 1909
Lestrigonus macrophthalmus (Vosseler, 1901)
Leucaltis clathria Haeckel, 1872
Leucaltis impressa Hanitsch, 1890
Leucandra ananas (Montagu, 1814)
Leucandra aspera (Schmidt, 1862)
Leucandra balearica Lackschewitz, 1886
Leucandra barbata (Duchassaing & Michelotti, 1864)
Leucandra bolivari Ferrer-Hernandez, 1916
Leucandra caminus Haeckel, 1872
Leucandra nausicaae (Schuffner, 1877)
Leucandra polejaevi (Breitfuss, 1896)
Leucandra rodriguezi (Lackschewitz, 1886)
Leucetta nausicaae (Schuffner, 1877)
Leucia nivea (M. Sars, 1863)
Leucia violacea (Storm, 1879)
Leucilla echina (Haeckel, 1870)
Leucilla echinus (Haeckel, 1870)
Leuckartiara abyssi (G.O. Sars, 1874)
Leuckartiara breviconis (Murbach & Shearer, 1902)
Lysilla loveni Malmgren, 1866
Lysilla nivea Langerhans, 1884
Lysippe fragilis (Wollebaek, 1912)
Lysippe labiata Malmgren, 1866
Lysippe sexcirrata (Sars, 1856)
Lysippides fragilis (Wollebaeck, 1912)
Lytaster inaequalis Perrier, 1894
Macellicephala affinis Fauvel, 1914
Macellicephala incerta Fauvel, 1914
Macellicephala kirkegaardi Uschakov, 1971
Macellicephala laubieri Reyss, 1971
Macellicephala longipalpa Uschakov, 1957
Macellicephala mirabilis (McIntosh, 1885)
Macellicephala paucidentata Eliason, 1962
Macellicephala violacea (Levinsen, 1887)
Leuconia barbata (Duchassaing & Michelotti, 1864)
Leuconia bolivari (Ferrer-Hernandez, 1916)
Leuconia caespitosa (Haeckel, 1872)
Leuconia caminus (Haeckel, 1872)
Leuconia johnstonii Carter, 1871
Leuconia polejaevi (Breitfuss, 1896)
Leuconia rodriguezi (Lackschewitz, 1886)
Leucophloeus ibericus Ferrer-Hernandez, 1923
Leucophloeus mixtus Sarà, 1958
Leucopsacus scoliodocus Ijima, 1903
Leucosolenia canariensis (Miklucho-Maclay, 1868)
Leucosolenia complicata (Montagu, 1814)
Leucosolenia contorta Bowerbank, 1866
Leucosolenia coriacea (Montagu, 1814)
Leucosolenia cyathus (Haeckel, 1870)
Leucosolenia darwini Haeckel, 1870
Leucosolenia darwinii Haeckel, 1870
Leucosolenia echinoides Haeckel, 1870
Leucosolenia fabricii (Schmidt, 1869)
Leucosolenia hermesi (Breitfuss, 1897)
Leucosolenia lacunosa (Johnston, 1842)
Leucosolenia lieberkuehni (Schmidt, 1862)
Leucosolenia minoricensis Lackschewitz, 1886
Leucosolenia multiformis Breitfuss, 1898
Leucosolenia nanseni Breitfuss, 1896
Leucosolenia primordialis (Haeckel, 1870)
Leucosolenia somesi (Bowerbank, 1874)
Leuculmis echinus Haeckel, 1870
Levidorum pori (Ben-Eliahu, 1977)
Levinella thalassae Borojevic & Boury-Esnault, 1986
Levinsenia gracilis (Tauber, 1879)
Licornia jolloisii (Audouin, 1826)
Lightiella magdalenina Carcupino, Floris, Addis, Castelli & Curini-Galletti, 2006
Luidia fragilissima Forbes, 1839
Luidia sarsi Düben & Koren, 1845
Luidia sarsii Düben & Koren, in Düben, 1845
Luidiaster dubius H.L. Clark, 1941
Lumbriclymene cylindricauda Sars, 1872
Lumbriclymene cylindricaudata [auctt. misspelling]
Lumbriclymene minor Arwidsson, 1906
Lumbricus litoralis Johnston, 1827
Lumbrinerides acuta (Verrill, 1875)
Lumbrinerides amoureuxi Miura, 1981
Lumbrinerides laubieri Miura, 1980
Lumbrinerides neogesae Miura, 1981
Lumbrineriopsis paradoxa (Saint-Joseph, 1888)
Lumbrineriopsis tsushimaensis Imajima & Higuchi, 1975
Lumbrineris agastos (Fauchald, 1974)
Lumbrineris albidentata Ehleers, 1908
Lumbrineris aniara (Fauchald, 1974)
Lumbrineris bifrons (Kinberg, 1865)
Lumbrineris cingulata Ehlers, 1897
Lumbrineris cluthensis Clark, 1953
Lumbrineris coccinea (Renier, 1804)
Lumbrineris emandibulata Pillai, 1961
Lumbrineris flabellicola Fage, 1936
Lumbrineris fragilis (O.F. Müller, 1776)
Lumbrineris funchalensis (Kinberg, 1865)
Lumbrineris gracilis (Ehlers, 1868)
Lumbrineris hibernica McIntosh, 1903
Lumbrineris impatiens Claparède, 1868
Lumbrineris inflata Moore, 1911
Lumbrineris labrofimbriata Saint-Joseph, 1888
Lumbrineris latreilli Audouin & Milne Edwards, 1834
Lumbrineris longipodiata Cantone, 1990
Lumbrineris magnidentata Winsnes, 1981
Lopadorrhynchus brevis Grube, 1855
Lopadorrhynchus krohnii (Claparède, 1870)
Lopadorrhynchus uncinatus Fauvel, 1915
Lophaster furcifer (Düben & Koren, 1846)
Lophocalyx pseudovalida Menshenina, Tabachnick, Lopes & Hajdu, 2007
Lovenella producta (Sars G.O., 1874)
Loxomitra kefersteinii (Claparède, 1867)
Malacoceros fuliginosus (Claparède, 1870)
Malacoceros girardi Quatrefages, 1843
Malacoceros jirkovi Sirkorski, 1992
Malacoceros tetracerus (Schmarda, 1861)
Malacoceros vulgaris Quatrefages, 1843
Malacosaccus unguiculatus Schulze, 1886
Maldane arctica Detinova, 1985
Maldane glebifex Grube, 1860
Maldane malmgreni McIntosh, 1885
Maldane sarsi Malmgren, 1865
Maldanella harai (Izuka, 1902)
Malmgrenia andreapolis McIntosh, 1874
Malmgrenia arenicolae (Saint-Joseph, 1888)
Malmgrenia castanea Mc Intosh, 1876
Malmgreniella andreapolis (McIntosh, 1874)
Malmgreniella arenicolae (de Saint Joseph, 1888)
Malmgreniella castanea (McIntosh, 1876)
Malmgreniella darbouxi Pettibone, 1993
Malmgreniella lilianae Petttibone, 1993
Malmgreniella marphysae (McIntosh, 1876)
Malmgreniella polypapillata Barnich & Fiege, 2001
Manayunkia aestuarina (Bourne, 1883)
Manayunkia caspica Annenkova, 1928
Marenzelleria neglecta Sikorski & Bick, 2004
Marenzelleria wireni Augener, 1913
Maresearsia praeclara Totton, 1954
Leiochone tenuis Day, 1957
Leiochrides norvegicus Fauchald, 1972
Leiodermatium pfeifferae (Carter, 1873)
Leitoscoloplos mammosus Mackie, 1987
Lemintina cuvieri Risso, 1826
Lensia achilles Totton, 1941
Lensia campanella (Moser, 1917)
Lensia conoidea (Keferstein & Ehlers, 1860)
Lensia cossack Totton, 1941
Lensia exeter Totton, 1941
Lensia fowleri (Bigelow, 1911)
Lensia havock Totton, 1941
Lensia multicristata (Moser, 1925)
Lensia reticulata Totton, 1954
Lensia subtilis (Chun, 1886)
Lensia subtiloides (Lens & van Riemsdijk, 1908)
Lensia truncata (Sars, 1846)
Leocrates atlanticus (McIntosh, 1885)
Leocrates chinensis Kinberg, 1866
Leocrates claparedii (Costa in Claparède, 1868)
Leodice antennata Savigny in Lamarck, 1818
Leodora laevis (Quatrefages, 1866)
Leonnates decipiens Fauvel, 1929
Leonnates glauca (Claparède, 1870)
Leonnates indicus Kinberg, 1866
Leonnates persica Wesenberg-Lund, 1949
Leonnates pusillus Langerhans, 1880
Lepidasthenia argus Hodgson, 1900
Lepidasthenia brunnea Day, 1960
Marphysa bellii (Audouin & Milne-Edwards, 1833)
Marphysa fallax Marion & Bobretzky, 1875
Marphysa kinbergi McIntosh, 1910
Marphysa macintoshi Crossland, 1903
Marphysa mauritanica Gillet, 1990
Marphysa sanguinea (Montagu, 1815)
Lissodendoryx fragilis (Fristedt, 1885)
Lissodendoryx jenjonesae Picton & Goodwin, 2007
Lissodendoryx lobosa Lundbeck, 1905
Lissodendoryx lundbecki Topsent, 1913
Lissodendoryx polymorpha Topsent, 1892
Lissodendoryx simplex Topsent, 1904
Lissodendoryx sophia (Fristedt, 1887)
Lissodendoryx stipitata (Arnesen, 1903)
Lissodendoryx stipitata Lundbeck, 1905
Lissodendoryx vicina Lundbeck, 1905
Lissodendoryx (Ectyodoryx) derjugini (Breitfuss, 1912)
Lissodendoryx (Ectyodoryx) jenjonesae Picton & Goodwin, 2007
Lissodendoryx (Ectyodoryx) olgae (Hentschel, 1929)
Lissodendoryx (Ectyodoryx) stephensi (Burton, 1930)
Lissodendoryx (Lissodendoryx) amaknakensis (Lambe, 1895)
Lissodendoryx (Lissodendoryx) caduca (Schmidt, 1868)
Lissodendoryx (Lissodendoryx) certa (Topsent, 1892)
Lissodendoryx (Lissodendoryx) firma (Lambe, 1895)
Lissodendoryx (Lissodendoryx) simplex Topsent, 1904
Lissodendoryx (Lissodendoryx) sophia (Fristedt, 1887)
Lissodendoryx (Lissodendoryx) stipitata (Arnesen, 1903)
Lissodendoryx (Lissodendoryx) vicina Lundbeck, 1905
Lissodendoryx (Waldoschmittia) mediterranea (Sarà & Siribelli, 1960)
Lithoplocamia atlantica (Lévi & Vacelet, 1958)
Melinna albicincta (Mackie & Pleijel, 1995)
Melinna collare Detinova, 1986
Melinna cristata (M. Sars, 1851)
Melinna elisabethae McIntosh, 1918
Melinna islandica Saemundsson, 1918
Melinna monoceroides Fauvel, 1936
Melinna palmata Grube, 1870
Machairaster pictus Perrier, 1884
Macrochaeta caroli Westheide, 1981
Macrochaeta clavicornis (M. Sars, 1835)
Macrochaeta helgolandica Friedrich, 1936
Macrochaeta polyonyx Eliason, 1962
Madrepora oculata Linnaeus, 1758
Magdalenaster arcticus Koehler, 1907
Magelona alleni Wilson, 1958
Magelona cincta Ehlers, 1908
Magelona equilamellae Harmelin, 1964
Magelona filiformis Wilson, 1959
Magelona johnstoni Fiege, Licher & Mackie, 2000
Magelona minuta Eliason, 1962
Magelona mirabilis (Johnston, 1865)
Magelona papillicornis McIntosh, 1878 non F. Müller, 1858
Magelona rosea Moore, 1907
Magelona wilsoni Glémarec, 1966
Magnibursatus blennii (Paggi & Orecchia, 1975) Kostadinova, Bartoli, Gibson & Raga, 2004
Microciona duplex (Sarà, 1958)
Microciona elliptichela Alander, 1942
Microciona fallax Bowerbank, 1866
Microciona fictitia Bowerbank, 1866
Microciona fraudator Bowerbank, 1874
Microciona frogeti Vacelet, 1969
Microciona gradalis (Topsent, 1925)
Microciona haplotoxa (Topsent, 1928)
Microciona heterotoxa Hentschel, 1929
Microciona jecusculum (Bowerbank, 1866)
Microciona laevis Bowerbank, 1866
Microciona levii Sarà & Siribelli, 1960
Microciona macrochela Lévi, 1960
Microciona microchela Hechtel, 1965
Microciona osismica Cabioch, 1968
Microciona plumosa (Montagu, 1814)
Microciona poecilosclera Sarà & Siribelli, 1960
Microciona simplicima Bowerbank, 1874
Microciona simplicissima Norman, 1869
Microciona spinarcus Carter & Hope, 1889
Microciona spinulenta Bowerbank, 1866
Microciona strepsitoxa Hope, 1889
Microciona tenuissima (Stephens, 1916)
Microciona toximajor (Topsent, 1925)
Microciona toxirecta Sarà & Siribelli, 1960
Microciona toxistyla Sarà, 1959
Microciona toxitenuis (Topsent, 1925)
Microciona toxivaria Sarà, 1959
Microclymene acirrata Arwidsson, 1906
Microclymene tricirrata Arwidsson, 1906
Microcosmus squamiger Michaelsen, 1927
Micromaldane ornithochaeta Mesnil, 1897
Micronephthys maryae San Martín, 1982
Micronephthys minuta (Théel, 1879)
Micronephthys neotena (Noyes, 1980)
Micronephthys sphaerocirrata (Wesenberg-Lund, 1949)
Micronephthys stammeri (Augener, 1932)
Micronereis variegata Claparède, 1863
Microphthalmus aberrans (Webster & Benedict, 1887)
Microphthalmus bifurcatus Hartmann-Schröder, 1974
Microphthalmus ephippiophorus Clausen, 1986
Microphthalmus fragilis Bobretzky, 1870
Microphthalmus listensis Westheide, 1967
Microphthalmus pseudoaberrans Campoy & Vieitez, 1982
Microphthalmus sczelkowii Metschnikow, 1865
Microphthalmus similis Bobretzky, 1870
Microphthalmus southerni Westheide, 1966
Microrbinia linea Hartman, 1965
Microspio atlantica (Langerhans, 1881)
Lumbrineris mixochaeta Oug, 1998
Lumbrineris nonatoi Ramos, 1976
Lumbrineris pseudofragilis Amoureux, 1977
Lumbrineris scopa Fauchald, 1974
Lumbrineris tetraura (Schmarda, 1861)
Lycaea pachypoda (Claus, 1879)
Lycaea serrata Claus, 1879
Lycaeopsis themistoides Claus, 1879
Lycastis armillaris (O.F. Müller, 1776)
Lycastis brevicornis Audouin & Milne Edwards, 1833
Lychnagalma utricularia (Claus, 1879)
Lygdamis muratus (Allen, 1904)
Lysianassina longicornis (Lucas, 1846)
Lysibranchia paucibranchiata Cantone, 1983
Lysidice collaris Grube, 1870
Lysidice margaritacea Claparède, 1868
Lysidice ninetta Audouin & Milne-Edwards, 1833
Microstylifer rugosus Vacelet, 1969
Mikro giustii (Bogi & Nofroni, 1989)
Milnesium tardigradum Quatrefages, 1844
Mimachlamys varia (Linnaeus, 1758)
Mimaster tizardi Sladen, 1882
Minuspio cirrifera (Wirén, 1883)
Minuspio multibranchiata (Berkeley, 1927)
Mioawateria watsoni (Dautzenberg, 1889)
Miscellania dentata Martin, Alós & Sardá, 1990
Mitrophyes peltifera Haeckel, 1888
Mycale adhaerens (Lambe, 1893)
Mycale albicans (Topsent, 1892)
Mycale arctica (Fristedt, 1887)
Mycale bolivari Ferrer-Hernandez, 1914
Mycale borassus (Carter, 1876)
Mycale bowerbanki (Schmidt, 1862)
Mycale contareni (Lieberkühn, 1859)
Mycale contarenii (Lieberkühn, 1859)
Mycale dentata Sarà, 1958
Mycale dubia (Czerniavsky, 1880)
Mycale fascibula (Topsent, 1904)
Mycale foraminosa (Schmidt, 1862)
Mycale hamata (Topsent, 1892)
Mycale helios (Fristedt, 1887)
Mycale irregularis (Czerniavsky, 1880)
Mycale lanugo (Schmidt, 1875)
Mycale lindbergi Koltun, 1958
Mycale lingua (Bowerbank, 1866)
Mycale lobata (Montagu, 1814)
Mycale lobimana (Czerniavsky, 1880)
Mycale longistyla Koltun, 1958
Mycale loveni (Fristedt, 1887)
Mycale macilenta (Bowerbank, 1866)
Mycale marshallhalli (Kent, 1870)
Mycale massa (Schmidt, 1862)
Mycale micracanthoxea Buizer & van Soest, 1977
Mycale minima (Waller, 1880)
Mycale mollis (Topsent, 1892)
Mycale muscoides (Czerniavsky, 1880)
Mycale ovulum (Schmidt, 1870)
Mycale papillosa Koltun, 1959
Mycale sanguinea Tsurnamal, 1969
Mycale strelnikovi Rezvoi, 1924
Mycale subclavata (Bowerbank, 1866)
Mycale syrinx (Schmidt, 1862)
Mycale titubans (Schmidt, 1870)
Mycale toporoki Koltun, 1958
Mycale tuberosa (Schmidt, 1868)
Mycale tunicata (Schmidt, 1862)
Mycale tylota Koltun, 1958
Mycale varpachovskii (Swartschewsky, 1906)
Mycale velutata (Schmidt, 1862)
Lilyopsis medusa (Metschnikoff, 1870)
Lilyopsis rosea Chun, 1885
Limnocythere inopinata (Baird, 1843)
Metalia Costae Gasco, 1876
Metapallene dubitans (Hodgson, 1910)
Metapallene languida (Hoek, 1881)
Metavermilia arctica Kupriyanova, 1993
Metavermilia taenia Zibrowius, 1971
Metroperiella lacunata (Hayward & Hansen, 1999)
Metschnikowia intermedia Grimm, 1877
Metschnikowia tuberculata Grimm, 1877
Microciona ambigua Bowerbank, 1866
Microciona angularis Sarà & Siribelli, 1960
Microciona armata Bowerbank, 1862
Microciona ascendens Cabioch, 1968
Microciona assimilis (Topsent & Olivier, 1943)
Microciona atrasanguinea Bowerbank, 1862
Microciona ctenichela Alander, 1942
Microciona ditoxa (Stephens, 1916)
Microciona dives Topsent, 1891
Moerisia carine Bouillon, 1978
Moerisia inkermanica Paltschikowa-Ostroumowa, 1925
Moerisia lyonsi Boulenger, 1908
Moerisia maeotica (Ostroumoff, 1896)
Monanchora alaskensis (Lambe, 1895)
Monanchora pulchra (Lambe, 1895)
Monobrachium parasitum Mereschkowsky, 1877
Monocrepidium minutum (Cabioch, 1968)
Monocrepidium vermiculatum Topsent, 1898
Myrianida antondohrni (Çinar & Gambi, 2005)
Myrianida brachycephala (Marenzeller, 1874)
Myrianida cognettii (Çinar & Gambi, 2005)
Myrianida convoluta (Cognetti, 1953)
Myrianida dentalia (Imajima, 1966)
Margelopsis haeckelii Hartlaub, 1897
Marginaster capreensis (Gasco, 1876)
Marginaster fimbriatus Sladen, 1889
Marginaster pentagonus Perrier, in Milne-Edwards, 1882
Mariansabellaria norvegica (Strømgren, 1971)
Monotheca obliqua (Johnston, 1847)
Monotheca pulchella (Bale, 1882)
Monothula subtilis (Giesbrecht, 1893 ["1892"])
Monticellina heterochaeta Laubier, 1961
Monticellina tesselata (Hartman, 1960)
Mugga bathyalis Holthe, 1986
Mugga wahrbergi Eliason, 1955
Muggiaea atlantica Cunningham, 1892
Muggiaea bargmannae Totton, 1954
Muggiaea cantabrica Alcazar, 1982
Muraenicola mediterraneus (Bartoli, Oversteet & Gibson, 2003) Nolan & Cribb, 2010
Myxilla (Myxilla) fibrosa Levinsen, 1893
Myxilla (Myxilla) fimbriata (Bowerbank, 1866)
Myxilla (Myxilla) flexitornota Rezvoi, 1925
Myxilla (Myxilla) hastatispiculata Swartschevsky, 1905
Myxilla (Myxilla) inequitornota Burton, 1931
Myxilla (Myxilla) iophonoides Swartschevsky, 1906
Myxilla (Myxilla) iotrochotina (Topsent, 1892)
Myxilla (Myxilla) macrosigma Boury-Esnault, 1971
Myxilla (Myxilla) perspinosa Lundbeck, 1905
Myxilla (Myxilla) prouhoi (Topsent, 1892)
Myxilla (Myxilla) reses (Topsent, 1892)
Myxilla (Myxilla) rosacea (Lieberkühn, 1859)
Myxilla (Myxilla) septentrionalis Fristedt, 1887
Myxilla (Stelodoryx) flabellata (Koltun, 1959)
Myxilla (Stelodoryx) pluridentata (Lundbeck, 1905)
Myxilla (Stelodoryx) procera Topsent, 1904
Melinnopsis arctica (Annenkova, 1931)
Mellonympha velata (Thomson, 1873)
Melonanchora elliptica Carter, 1874
Melonanchora emphysema (Schmidt, 1875)
Melonchela clathriata Koltun, 1955
Melythasides laubieri Desbruyères, 1978
Menanetia minchini Topsent, 1896
Mercierella enigmatica Fauvel, 1923
Merlia deficiens Vacelet, 1980
Merlia normani Kirkpatrick, 1908
Mesochaetopterus minutus Potts, 1914
Mesochaetopterus sagittarius (Claparède, 1870)
Mesonerilla armoricana Swedmark, 1959
Mesonerilla biantennata Jouin, 1963
Mesonerilla diatomeophaga Núñez in Núñez, Ocaña & Brito, 1997
Mesonerilla fagei Swedmark, 1959
Mesonerilla intermedia Wilke, 1953
Mesonerilla roscovita Levi, 1953
Nereimyra britannica (Chamberlin, 1920)
Nereimyra longicornis (M. Sars, 1862)
Nereimyra multipapillata (Théel, 1879)
Nereimyra punctata (Müller, 1788)
Nereina angulata (Sars, 1865)
Nereiphylla castanea (Marenzeller, 1879)
Nereiphylla paretti Blainville, 1828
Nereiphylla pusilla (Claparède, 1870)
Nereiphylla rubiginosa (Saint-Joseph, 1888)
Nereis anomala (Gravier, 1901)
Nereis armillaris O.F. Müller, 1776
Nereis bifrons O.F. Müller, 1786
Nereis corniculata O.F. Müller, 1788
Nereis elitoralis Eliason, 1962
Nereis falcaria (Willey, 1905)
Nereis fallax Quatrefages, 1866
Marphysa saxicola Langerhans, 1881
Marphysa simplex (Langerhans, 1884)
Marphysa simplex Crossland, 1903
Marphysa teretiuscula (Schmarda, 1861)
Marrus antarcticus Totton, 1954
Marrus orthocanna (Kramp, 1942)
Marsipaster acicula Downey, 1970
Marthasterias foliacea Jullien, 1878
Marthasterias glacialis (Linnaeus, 1758)
Marycarmenia lysandrae Nuñez, 1998
Mastobranchus dollfusi Fauvel, 1936
Mastobranchus trinchesii Eisig, 1887
Maupasia caeca Viguier, 1886
Maupasia isochaeta (Reibisch, 1895)
Mediaster bairdi (Verrill, 1882)
Mediaster stellatus Perrier, 1891
Medicorophium annulatum (Chevreux, 1908)
Medicorophium minimum (Schiecke, 1978)
Medicorophium rotundirostre (Stephensen, 1915)
Medicorophium runcicorne (Della Valle, 1893)
Mediomastus capensis Day, 1961
Mediomastus cirripes Ben-Eliahu, 1976
Megalomma linaresi (Rioja, 1917)
Megalomma vesiculosum (Montagu, 1815)
Megalomma vigilans (Claparède, 1869)
Meganerilla clavata Magagnini, 1966
Meganerilla swedmarki Boaden, 1961
Melaenis loveni Malmgren, 1866
Neanthes agulhana (Day, 1963)
Neanthes bioculata (Hartmann-Schröder, 1975)
Neanthes caudata (Delle Chiaje, 1827)
Neanthes fucata (Savigny in Lamarck, 1818)
Neanthes heteroculata (Hartmann-Schröder, 1981)
Neanthes irrorata (Malmgren, 1867)
Mycale vosmaeri (Levinsen, 1887)
Mycale (Aegogropila) adhaerens (Lambe, 1893)
Mycale (Aegogropila) contarenii (Lieberkühn, 1859)
Mycale (Aegogropila) dubia (Czerniavsky, 1880)
Mycale (Aegogropila) irregularis (Czerniavsky, 1880)
Mycale (Aegogropila) rotalis (Bowerbank, 1874)
Mycale (Aegogropila) syrinx (Schmidt, 1862)
Mycale (Aegogropila) tunicata (Schmidt, 1862)
Mycale (Anomomycale) titubans (Schmidt, 1870)
Mycale (Carmia) bolivari Ferrer-Hernandez, 1914
Mycale (Carmia) fascibula (Topsent, 1904)
Mycale (Carmia) helios (Fristedt, 1887)
Mycale (Carmia) macilenta (Bowerbank, 1866)
Mycale (Carmia) micracanthoxea Buizer & van Soest, 1977
Mycale (Carmia) minima (Waller, 1880)
Mycale (Carmia) papillosa Koltun, 1959
Mycale (Carmia) sanguinea Tsurnamal, 1969
Mycale (Gomphostegia) loricata (Topsent, 1896)
Mycale (Mycale) arctica (Fristedt, 1887)
Mycale (Mycale) lingua (Bowerbank, 1866)
Mycale (Mycale) longistyla Koltun, 1958
Mycale (Mycale) loveni (Fristedt, 1887)
Mycale (Mycale) massa (Schmidt, 1862)
Mycale (Mycale) toporoki Koltun, 1958
Mycale (Mycale) tylota Koltun, 1958
Mycale (Oxymycale) intermedia (Schmidt, 1874)
Mycale (Paresperella) atlantica (Stephens, 1917)
Mycale (Paresperella) dentata Sarà, 1958
Mycale (Rhaphidotheca) arctica (Hentschel, 1929)
Mycale (Rhaphidotheca) loricata (Topsent, 1896)
Mycale (Rhaphidotheca) marshallhalli (Kent, 1870)
Mycalopsis radiata Topsent, 1927
Microspio mecznikowianus (Claparède, 1869)
Neogyptis mediterranea (Pleijel, 1993)
Neolagisca drachi (Reyss, 1961)
Neolampas rostellata A. Agassiz, 1869
Neoleanira tetragona (Örsted, 1845)
Neomicrorbis azoricus Zibrowius, 1972
Neomorphaster eustichus Sladen, 1889
Neomorphaster margaritaceus Perrier, in Milne-Edwards, 1882
Neomorphaster parfaiti Koehler, 1896
Neonymphon sp. Stock, 1978
Neopetitia amphophthalma (Siewing, 1956)
Neopetrosia problematica (de Laubenfels, 1930)
Neopolynoe paradoxa (Anon, 1888)
Neopseudocapitella brasiliensis Rullier & Amoureux, 1979
Neosabellides oceanica (Fauvel, 1909)
Neoschrammeniella bowerbankii (Johnson, 1863)
Neoturris abyssi (G.O. Sars, 1874)
Nepanthia tesselata Gray, 1840
Nephthys breogani Laborda & Vieitez, 1984
Nephtys assimilis Örsted, 1843
Nephtys caeca (Fabricius, 1780)
Nephtys ciliata (Müller, 1788)
Nephtys cirrosa (Ehlers, 1868)
Nephtys hombergii Savigny in Lamarck, 1818
Nephtys hystricis McIntosh, 1900
Nephtys incisa Malmgren, 1865
Nephtys kersivalensis McIntosh, 1908
Nephtys longosetosa Örsted, 1842
Nephtys paradoxa Malm, 1874
Nephtys pente Rainer, 1984
Nephtys pulchra Rainer, 1991
Nereimyra aphroditoides (O. Fabricius, 1780)
Nereimyra aurantiaca (M. Sars, 1862)
Notomastus aberans Day, 1957
Notomastus agassizii McIntosh, 1885
Notomastus exsertilis Saint-Joseph, 1906
Notomastus formianus Eisig, 1887
Notomastus latericeus Sars, 1851
Notomastus lineatus Claparède, 1869
Notomastus mossambicus (Thomassin, 1970)
Notomastus profundus (Eisig, 1887)
Notomastus (Clistomastus) lineatus (Claparède, 1869)
Notophyllum americanum Verrill, 1882
Notophyllum crypticum Nygren, Eklöf & Pleijel, 2010
Notophyllum foliosum (Sars, 1835)
Notoproctus oculatus Arwidsson, 1906
Notopygos megalops McIntosh, 1885
Novafabricia bilobata Martin & Giangrande, 1991
Novodinia homonyma Downey, 1986
Novodinia pandina (Sladen, 1889)
Novodinia semicoronata (Perrier, 1885)
Nymphaster albidus Sladen, 1889
Nymphaster arenatus (Perrier, 1881)
Nymphaster basilicus Sladen, 1889
Nymphaster protentus Sladen, 1889
Nymphon compactum Losina-Losinsky, 1961
Nymphon kurilocompactum Turpaeva, 2004
Obelia dichotoma (Linnaeus, 1758)
Oceanapia aerea (Topsent, 1904)
Oceanapia cancap de Weerdt & van Soest, 1986
Oceanapia constructa (Rützler, 1965)
Oceanapia coriacea (Topsent, 1904)
Oceanapia decipiens (Sarà, 1958)
Oceanapia elongata (Topsent, 1892)
Oceanapia isodictyiformis (Carter, 1882)
Oceanapia minor (Sarà, 1958)
Oceanapia nodulosa (Topsent, 1928)
Oceanapia oleracea (Schmidt, 1870)
Myrianida fasciata Milne Edwards, 1845
Myrianida hesperidium (Claparède, 1868)
Myrianida inermis (Saint Joseph, 1887)
Myrianida irregularis (Imajima & Hartman, 1964)
Myrianida langerhansi (Gidholm, 1967)
Myrianida longoprimicirrata (López, San Martín & Jiménez, 1997)
Myrianida maculata Claparède, 1868
Myrianida mediterranea (Cognetti, 1953)
Myrianida pinnigera (Montagu, 1808)
Myrianida prolifera (O.F. Müller, 1788)
Myrianida quindecimdentata (Langerhans, 1884)
Myrianida rubropunctata (Grube, 1860)
Myrianida tyrrhenica (Cognetti, 1953)
Myriochele danielsseni Hansen, 1878
Myriochele fragilis Nilsen & Holthe, 1985
Myriochele heeri Malmgren, 1867
Myriochele oculata Zachs, 1923
Myrmekioderma spelaeum (Pulitzer-Finali, 1983)
Mysta barbata Malmgren, 1865
Mysta picta (Quatrefages, 1866)
Mystides bidentata Langerhans, 1880
Mystides borealis Théel, 1879
Mystides caeca Langerhans, 1880
Mystides southerni (Banse, 1954)
Mystides (Pseudomystides) limbata
Myxaster perrieri Koehler, 1896
Myxaster sol Perrier, 1885
Myxicola aesthetica (Claparède, 1870)
Myxicola infundibulum (Montagu, 1808)
Myxicola sarsii Krøyer, 1856
Myxicola steenstrupi Krøyer, 1856
Myxilla acribaria de Laubenfels, 1942
Myxilla arcitenens Topsent, 1892
Myxilla barentsi Vosmaer, 1885
Nereis falsa Quatrefages, 1866
Nereis fasciata Bosc, 1802
Nereis fucata (Savigny in Lamarck, 1818)
Nereis funchalensis (Langerhans, 1880)
Nereis gilchristi Day, 1967
Nereis icosiensis Gravier & Dantan, 1928
Nereis incisa O. Fabricius, 1780
Nereis irrorata (Malmgren, 1867)
Nereis jacksoni Kinberg, 1866
Nereis lacustris Linnaeus, 1767
Nereis lamellosa Ehlers, 1864
Nereis longissima Johnston, 1840
Nereis moroccensis Amoureux, 1976
Nereis pelagica Linnaeus, 1758
Nereis perivisceralis Claparède, 1868
Nereis persica Fauvel, 1911
Nereis pinnigera Montagu, 1808
Nereis prismatica O.F. Müller, 1776
Nereis prolifera O.F. Müller, 1788
Nereis pulsatoria (Savigny, 1822)
Nereis rava Ehlers, 1864
Nereis splendida Grube, 1840
Nereis zonata Malmgren, 1867
Nereis (Eunereis) elitoralis (Eliason, 1962)
Nereis (Nereis) gilchristi Day, 1967
Nerilla antennata Schmidt, 1848
Nerilla mediterranea Schlieper, 1925
Nerilla stygicola Ax, 1957
Nerillidium gracile Remane, 1925
Nerillidium mediterraneum Remane, 1928
Nerillidium simplex Levi, 1953
Nerillidium troglochaetoides Remane, 1925
Nethea dissimilis Sarà, 1959
Nicolea venustula (Montagu, 1818)
Nicolea zostericola Örsted, 1844
Myzostoma alatum Graff, 1884
Myzostoma asteriae Marenzeller, 1895
Myzostoma bucchichii Wagner, 1887
Myzostoma carpenteri Graff, 1884
Myzostoma cirriferum Leuckart, 1836
Myzostoma giganteum Nansen, 1885
Myzostoma glabrum Leuckart in Graff, 1877
Myzostoma ingolfi Jägersten, 1940
Myzostoma parasiticum Leuckart, 1827
Myzostomum cirriferum Leuckart, 1836
Naiades cantrainii Delle Chiaje, 1828
Nainereis laevigata (Grube, 1855)
Nainereis quadricuspida (Fabricius, 1780)
Naineris laevigata (Grube, 1855)
Naineris quadraticeps Day, 1965
Naineris quadricuspida (Fabricius, 1780)
Namalycastis brevicornis (Audouin & Milne Edwards, 1833)
Namanereis littoralis (Grube, 1871)
Namanereis quadraticeps Blanchard in Gay, 1849
Nanomia bijuga (Delle Chiaje, 1844)
Nanomia cara Agassiz, 1865
Narcissia canariensis (d'Orbigny, 1839)
Narcissia teneriffae Gray, 1840
Narcissia trigonaria Sladen, 1889
Nardoa reticulum Schmidt, 1862
Odostomia nardoi Brusina, 1869
Oenone fulgida (Savigny in Lamarck, 1818)
Oligoceras collectrix Schulze, 1880
Oligognathus bonelliae Spengel, 1882
Oligognathus parasiticus Cerruti, 1909
Omphalopoma cristata Langerhans, 1884
Omphalopoma gracilis (Langerhans, 1884)
Omphalopomopsis fimbriata (Delle Chiaje, 1822)
Oncaea borealis Sars G.O., 1918
Neanthes kerguelensis (McIntosh, 1885)
Neanthes nubila (Savigny, 1822)
Neanthes rubicunda (Ehlers, 1868)
Neanthes succinea (Leuckart, 1847)
Neanthes virens (M. Sars, 1835)
Neanthes willeyi (Day, 1934)
Necallianassa acanthura (Caroli, 1946)
Necallianassa truncata (Giard & Bonnier, 1890)
Nectadamas diomedeae (Bigelow, 1911)
Nectadamas richardi Pugh, 1992
Nectochaeta caroli Fauvel, 1914
Nectochaeta grimaldii Marenzeller, 1892
Nectodroma reticulata Bigelow, 1911
Nectopyramis diomedeae Bigelow, 1911
Nectopyramis natans (Bigelow, 1911)
Nectopyramis spinosa Sears, 1952
Nectopyramis thetis Bigelow, 1911
Negombata corticata (Carter, 1879)
Nematocarpus ramuliferus (Allman, 1874)
Nematonereis hebes Verrill, 1900
Nematonereis unicornis (Grube, 1840)
Nematonereis unicornis Schmarda, 1861
Nematophorus clarkei Nutting, 1900
Nemopsis bachei L. Agassiz, 1849
Neoamphitrite affinis (Malmgren, 1866)
Neoamphitrite figulus (Dalyell, 1853)
Neoamphitrite grayi (Malmgren, 1866)
Neoamphitrite groenlandica (Malmgren, 1866)
Ophidiaster aurantius Gray, 1840
Ophidiaster canariensis Greeff, 1872
Ophidiaster lessonae Gasco, 1876
Ophidiaster ophidianus (Lamarck, 1816)
Ophidiaster reyssi Sibuet, 1977
Ophidiaster (Hacelia) attenuatus Gray, 1840
Myceliospongia araneosa Vacelet & Perez, 1998
Oncaea similis Sars G.O., 1918
Oncaea subtilis Giesbrecht, 1893
Onuphis conchylega Sars, 1835
Onuphis eremita Audouin & Milne Edwards, 1833
Onuphis falesia Castelli, 1982
Onuphis iberica (Hartmann-Schröder, 1975)
Onuphis opalina (Verrill, 1873)
Onuphis quadricuspis M. Sars, 1872
Onuphis rullieriana (Amoureux, 1977)
Ophelia amoureuxi Bellan & Costa, 1987
Ophelia bicornis Savigny in Lamarck, 1818
Ophelia borealis Quatrefages, 1866
Ophelia celtica Amoureux & Dauvin, 1981
Ophelia laubieri Bellan & Costa, 1987
Ophelia limacina (Rathke, 1843)
Ophelia neglecta Schneider, 1892
Ophelia radiata (Delle Chiaje, 1828)
Ophelia rathkei McIntosh, 1908
Ophelia roscoffensis Augener, 1910
Ophelina abranchiata Støp-Bowitz, 1948
Ophelina acuminata Örsted, 1843
Ophelina cylindricaudata (Hansen, 1879)
Ophelina helgolandiae Augener, 1912
Ophelina modesta Støp-Bowitz, 1958
Ophelina norvegica Støp-Bowitz, 1945
Ophelina opisthobranchia [auctt.]
Ophelina opisthobranchiata Wirén, 1901
Opisthodonta longocirrata (Saint-Joseph, 1886)
Opisthodonta morena Langerhans, 1879
Opisthodonta pterochaeta Southern, 1914
Opisthodonta serratisetosa (López, San Martín & Jiménez, 1997)
Opisthosyllis brunnea Langerhans, 1879
Opisthosyllis viridis Langerhans, 1879
Myxilla behringensis Lambe, 1895
Myxilla brunnea Hansen, 1885
Myxilla dentata (Topsent, 1904)
Myxilla diversiancorata Lundbeck, 1905
Myxilla fasciculata sensu Schmidt, 1862
Myxilla fibrosa Levinsen, 1893
Myxilla fimbriata (Bowerbank, 1866)
Myxilla flabelliformis Hansen, 1885
Myxilla funalis (Bowerbank in Jeffreys & Norman, 1875)
Myxilla hastatispiculata Swartschevsky, 1906
Myxilla incrustans (Johnston, 1842)
Myxilla inequitornota Burton, 1931
Myxilla involvens Schmidt, 1864
Myxilla iotrochotina (Topsent, 1892)
Myxilla macrosigma Boury-Esnault, 1971
Myxilla mariana Ridley & Dendy, 1886
Myxilla parasitica Lambe, 1893
Myxilla pecqueryi Topsent, 1890
Myxilla pedunculata Lundbeck, 1905
Myxilla perspinosa Lundbeck, 1905
Myxilla prouhoi (Topsent, 1892)
Myxilla pulvinar Schmidt, 1868
Myxilla rosacea (Lieberkühn, 1859)
Myxilla rubiginosa Schmidt, 1862
Myxilla septentrionalis Fristedt, 1887
Myxilla tridens Schmidt, 1864
Myxilla veneta Schmidt, 1862
Myxilla (Burtonanchora) pedunculata Lundbeck, 1905
Myxilla (Ectyomyxilla) mariana Ridley & Dendy, 1886
Myxilla (Ectyomyxilla) parasitica Lambe, 1893
Myxilla (Myxilla) acribaria de Laubenfels, 1942
Myxilla (Myxilla) barentsi Vosmaer, 1885
Myxilla (Myxilla) behringensis Lambe, 1895
Myxilla (Myxilla) dentata (Topsent, 1904)
Nicomache lumbricalis (Fabricius, 1780)
Nicomache maculata Arwidsson, 1911
Nicomache minor Arwidsson, 1906
Nicomache personata Johnson, 1901
Nicomache (Loxochona) quadrispinata Arwidsson, 1906
Nicomache (Loxochona) trispinata Arwidsson, 1906
Nicomache (Nicomache) minor Arwidsson, 1906
Ninoe nigripes Verrill, 1873
Noanelia hartmanae Desbruyères & Laubier, 1977
Nothria conchylega (Sars, 1835)
Nothria geophiliformis (Moore, 1903)
Nothria hispanica Amoureux, 1972
Nothria hyperborea (Hansen, 1878)
Nothria rullieriana Amoureux, 1977
Notocirrus scoticus McIntosh, 1869
Otopsis chardyi Katzmann, 1974
Ova canaliferus (Lamarck, 1816)
Owenia fusiformis Delle Chiaje, 1844
Oxeostilon annandalei Ferrer-Hernandez, 1923
Oxycephalus piscator Milne Edwards, 1830
Oxydromus pallidus Claparède, 1864
Pachastrella amygdaloides Carter, 1876
Pachastrella debilis Topsent, 1890
Pachastrella geodioides Carter, 1876
Pachastrella intexta Carter, 1876
Pachastrella lesinensis Lendenfeld, 1894
Pachastrella monilifera Schmidt, 1868
Pachastrissa geodioides (Carter, 1876)
Pachastrissa inopinata (Pulitzer-Finali, 1983)
Pachastrissa pathologica (Schmidt, 1868)
Pachychalina arctica (Miklucho-Maclay, 1870)
Pachychalina fracta Hentschel, 1929
Pachychalina gracilenta (Bowerbank, 1866)
Pachychalina gracilis (Miklucho-Maclay, 1870)
Oceanapia perforata (Sarà, 1960)
Oceanapia putridosa (Lamarck, 1815)
Oceanapia reticulata (Topsent, 1904)
Oceanapia robusta (Bowerbank, 1866)
Oceanapia tuber (Lundbeck, 1902)
Oceanapia vacua (Sarà, 1961)
Octobranchus floriceps Kingston & Mackie, 1980
Octobranchus lingulatus (Grube, 1863)
Octomagelona bizkaiensis Aguirrezabalaga, Ceberio & Fiege, 2001
Odessia maeotica (Ostroumoff, 1896)
Odinia elegans Perrier, 1885
Odinia pandina Sladen, 1889
Odontaster mediterraneus (Marenzeller, 1893)
Odontosyllis ctenostoma Claparède, 1868
Odontosyllis cucullata (Mc Intosh, 1908)
Odontosyllis dugesiana Claparède, 1864
Odontosyllis fulgurans (Audouin & Milne Edwards, 1833)
Odontosyllis gibba Claparède, 1863
Odontosyllis polyodonta Saint Joseph, 1887
Odontosyllis virescens Marenzeller, 1874
Palmipes lobiancoi Ludwig, 1897
Palmyreuphrosyne paradoxa Fauvel, 1913
Palola siciliensis (Grube, 1840)
Palolo siciliensis (Grube, 1840)
Palpiphitime lobifera (Oug, 1978)
Palposyllis prosostoma Hartmann-Schröder, 1977
Panousea africana Rullier & Amoureux, 1969
Panthalis oerstedi Kinberg, 1856
Papillina nigricans Schmidt, 1862
Paracapitella southwardi Kirkegaard, 1983
Paramphinome jeffreysii (McIntosh, 1868)
Paramphitrite tetrabranchia Holthe, 1976
Paramyxilla mediterranea Sarà & Siribelli, 1960
Ophiodromus agilis (Ehlers, 1864)
Ophiodromus flexuosus (Delle Chiaje, 1827)
Ophiodromus longocirratus Tenerelli, 1973
Ophiodromus pallidus (Claparède, 1864)
Ophiodromus pelagicus Rioja, 1923
Ophlitaspongia kildensis Howson & Chambers, 1999
Ophlitaspongia papilla sensu Ferrer-Hernandez, 1914
Ophlitaspongia translata Pulitzer-Finali, 1978
Ophryotrocha bacci Parenti, 1961
Ophryotrocha dubia Hartmann-Schröder, 1974
Ophryotrocha gerlachi Hartmann-Schröder, 1974
Ophryotrocha geryonicola (Esmark, 1878)
Ophryotrocha gracilis Huth, 1933
Ophryotrocha hartmanni Huth, 1933
Ophryotrocha irinae Tsetlin, 1980
Ophryotrocha labronica Bacci & La Greca, 1961
Ophryotrocha littoralis (Levinsen, 1879)
Ophryotrocha lobifera Oug, 1978
Ophryotrocha longidentata Josefson, 1975
Ophryotrocha maculata Åkesson, 1973
Ophryotrocha mediterranea Martin, Abello & Cartes, 1991
Ophryotrocha minuta Levi, 1954
Ophryotrocha puerilis Claparède & Metschnikow, 1869
Ophryotrocha robusta Paxton & Åkesson, 2010
Ophryotrocha scarlatoi Averincev, 1989
Ophryotrocha socialis Ockelmann & Akesson, 1990
Parasabella cambrensis (Knight-Jones & Walker, 1985)
Parasabella langerhansi (Knight-Jones, 1983)
Parasabella saxicola (Grube, 1861)
Parasabella tenuicollaris (Grube, 1861)
Parasabella tommasi (Giangrande, 1994)
Parasabella torulis (Knight-Jones & Walker, 1985)
Orbinia armandi (McIntosh, 1910)
Orbinia bioreti (Fauvel, 1919)
Orbinia cornidei (Rioja, 1934)
Orbinia cuvierii (Audouin & Milne Edwards, 1833)
Orbinia foetida (Claparède, 1868)
Orbinia latreilli [Auctt.]
Orbinia sertulata (Savigny, 1822)
Orbinia (Orbinia) sertulata (Savigny, 1822)
Orbinia (Phylo) grubei McIntosh, 1910
Orbinia (Phylo) kupfferi (Ehlers, 1874)
Orbinia (Phylo) norvegica (M. Sars in G.O. Sars, 1872)
Oriopsis alata (Ehlers, 1897)
Oriopsis armandi (Claparède, 1864)
Oriopsis brevicollaris Rouse, 1990
Oriopsis eimeri (Langerhans, 1881)
Oriopsis hynensis Knight-Jones, 1983
Oriopsis ingeloreae Plate, 1995
Oriopsis metchnikowi Caullery & Mesnil, 1896
Orseis pulla Ehlers, 1864
Orthopyxis asymmetrica Stechow, 1919
Orthopyxis integra (MacGillivray, 1842)
Oscarella imperialis Muricy, Boury-Esnault, Bézac & Vacelet, 1996
Oscarella lobularis (Schmidt, 1862)
Oscarella microlobata Muricy, Boury-Esnault, Bézac & Vacelet, 1996
Oscarella rubra (Hanitsch, 1890)
Oscarella viridis Muricy, Boury-Esnault, Bézac & Vacelet, 1996
Othomaera knudseni (Reid, 1951)
Perinereis cultrifera (Grube, 1840)
Perinereis macropus (Claparède, 1870)
Perinereis marioni (Audouin & Milne Edwards, 1833)
Perinereis marionii (Audouin & Milne Edwards, 1833)
Perinereis nuntia (Savigny in Lamarck, 1818)
Perinereis oliveirae (Horst, 1889)
Perinereis rullieri Pilato, 1974
Perinereis taorica Langerhans, 1881
Perinereis tenuisetis (Fauvel, 1915)
Peripatagus cinctus Koehler, 1895
Perkinsyllis anophthalma (Capaccioni & San Martín, 1989)
Persephonaster leptactis H.L. Clark, 1941
Persephonaster patagiatus (Sladen, 1889)
Persephonaster sphenoplax (Bell, 1892)
Persephonaster spinulosus H.L. Clark, 1941
Pestarella candida (Olivi, 1792)
Pestarella tyrrhena (Petagna, 1792)
Petaloconchus laurae Scuderi, 2012
Petaloproctus tenuis (Théel, 1879)
Petaloproctus terricola Quatrefages, 1866
Petaloproctus terricolus Quatrefages, 1866
Petitia amphophthalma Siewing, 1956
Petrobiona massiliana Vacelet & Lévi, 1958
Petromica grimaldii Topsent, 1898
Petromica (Petromica) grimaldii Topsent, 1898
Petrosia canariensis de Weerdt & van Soest, 1986
Petrosia clavata (Esper, 1794)
Petrosia crassa (Carter, 1876)
Petrosia ficiformis (Poiret, 1789)
Petrosia friabilis Topsent, 1892
Petrosia intermedia (Czerniavsky, 1880)
Petrosia raphida Boury-Esnault, Pansini & Uriz, 1994
Petrosia variabilis Topsent, 1892
Petrosia (Petrosia) canariensis de Weerdt & van Soest, 1986
Petrosia (Petrosia) clavata (Esper, 1794)
Petrosia (Petrosia) crassa (Carter, 1876)
Petrosia (Petrosia) ficiformis (Poiret, 1789)
Petrosia (Petrosia) intermedia (Czerniavsky, 1880)
Petrosia (Petrosia) raphida Boury-Esnault, Pansini & Uriz, 1994
Myxilla (Myxilla) diversiancorata Lundbeck, 1905
Myxilla (Myxilla) fasciculata sensu Schmidt, 1862
Pectinaria belgica (Pallas, 1766)
Pectinaria belgica (Pallas, 1766), sensu Malmgren, 1866
Pectinaria granulata (Linnaeus, 1767)
Pectinaria hyperborea (Malmgren, 1866)
Pectinaria koreni (Malmgren, 1866)
Pectinaria neapolitana Claparède, 1869
Pectinaria (Amphictene) auricoma (O.F. Müller, 1776)
Pectinaria (Cistenides) hyperborea (Malmgren, 1866)
Pectinaria (Lagis) koreni (Malmgren, 1866)
Pectinaster dispar Verrill, 1915
Pectinaster echinulatus Ludwig, 1910
Pectinaster filholi Perrier, 1885
Pedicellaster margaritaceus Perrier, in Milne-Edwards, 1882
Pedicellaster sexradiatus Perrier, in Milne-Edwards, 1882
Pedicellaster typicus M. Sars, 1861
Pedinosoma curtum Reibisch, 1895
Pegea socia (Bosc, 1802)
Pegusa impar (Bennett, 1831)
Peisidice bermudensis Hartman & Fauchald, 1971
Pelagobia longicirrata Greeff, 1879
Pelagobia serrata Southern, 1909
Pellina fistulosa (Bowerbank, 1866)
Pellina foraminosa Czerniavsky, 1880
Pellina longispicula Czerniavsky, 1880
Pellinula cribrosa Czerniavsky, 1880
Pellinula schmidti Czerniavsky, 1880
Peltaster hebes Verrill, 1899
Peltaster placenta (Müller & Troschel, 1842)
Pennaria disticha Goldfuss, 1820
Pentacrinus wyvillethomsoni Jeffreys, 1870
Pentagonaster affinis Perrier, 1884
Oncaea conifera Giesbrecht, 1891
Paradexiospira cancellata (Fabricius, 1780)
Paradexiospira vitrea (Fabricius, 1780)
Paradexiospira (Paradexiospira) violacea (Levinsen, 1883)
Paradexiospira (Spirorbides) cancellata (Fabricius, 1780)
Paradexiospira (Spirorbides) vitrea (Fabricius, 1780)
Paradialychone filicaudata (Southern, 1914)
Paradiopatra calliopae Arvantidis & Koukouras, 1997
Paradiopatra quadricuspis (M. Sars in G.O. Sars, 1872)
Paradoneis armata Glémarec, 1966
Paradoneis drachi Laubier & Ramos, 1974
Paradoneis eliasoni Mackie, 1991
Paradoneis fulgens (Levinsen, 1884)
Paradoneis harpagonea (Storch, 1967)
Paradoneis ilvana Castelli, 1985
Paradoneis lyra (Southern, 1914)
Paradoxostoma rostratum Sars, 1866
Paradyte crinoidicola (Potts, 1910)
Paraehlersia dionisi (Núñez & San Martín, 1991)
Paraehlersia ferrugina (Langerhans, 1881)
Paragigantione papillosa Barnard, 1920
Paragonaster cylindratus Sladen, 1889
Paragonaster strictus Perrier, 1894
Paragonaster subtilis (Perrier, 1881)
Paralacydonia paradoxa Fauvel, 1913
Paraleiocapitella mossambica Thomassin, 1970
Paralepis speciosa Bellotti, 1878
Paraleucilla magna Klautau, Monteiro & Borojevic, 2004
Patinella distincta (Alvarez, 1993)
Patiria ocellifera Gray, 1847
Patiria pulla Koehler & Vaney, 1906
Patiria rosea Koehler & Vaney, 1906
Pherusa eruca (Claparède, 1869)
Pentagonaster arenatus Perrier, 1881
Pentagonaster balteatus Sladen, 1891
Pentagonaster concinnus Sladen, 1891
Pentagonaster crassus Perrier, 1885
Pentagonaster dentatus Perrier, 1884
Pentagonaster deplasi Perrier, 1885
Pentagonaster elongatus Perrier, 1885
Pentagonaster eximius Verrill, 1894
Pentagonaster gosselini Perrier, 1884
Pentagonaster grandis Perrier, 1885
Pentagonaster grenadensis Perrier, 1881
Pentagonaster haesitans Perrier, 1885
Pentagonaster hystricis von Marenzeller, 1893
Pentagonaster kergroheni Koehler, 1895
Pentagonaster lepidus Sladen, 1889
Pentagonaster minor Koehler, 1895
Pentagonaster mirabilis Perrier, 1875
Pentagonaster perrieri Sladen, 1889
Pentagonaster planus Verrill, 1895
Pentagonaster simplex Verrill, 1895
Pentagonaster subspinosus Perrier, 1881
Pentagonaster ternalis Perrier, 1881
Pentagonaster vincenti Perrier, 1885
Peraeospinosus kerguelenensis (Beddard, 1886)
Perarella propagulata Bavestrello, 1987
Perarella schneideri (Motz-Kossowska, 1905)
Peresiella clymenoides Harmelin, 1968
Periboea longocirrata Ehlers, 1864
Pericharax polejaevi Breitfuss, 1896
Phoxaster pumilus Sladen, 1889
Phronima colletti Bovallius, 1887
Phronima stebbingi Vosseler, 1901
Phronimella elongata (Claus, 1862)
Phronimopsis spinifera Claus, 1879
Parascelus typhoides Claus, 1879
Paraserpula planorbis Southward, 1963
Parasphaerosyllis indica Monro, 1937
Paraspio decorata (Bobretzky, 1870)
Parasterina africana Engel & Croes, 1960
Parathelges cardonae R. & M. Codreanu in Codreanu, 1968
Parathelges carolii R. Codreanu, 1968
Parathelges racovitzai Codreanu, 1940
Paratiara digitalis Kramp & Damus, 1925
Paratimea loennbergi (Alander, 1942)
Paratimea loricata (Sarà, 1958)
Paratimea pierantonii (Sarà, 1958)
Paratyphis spinosus Spandl, 1924
Paratyposyllis peresi Laubier, 1968
Paresperia intermedia Burton, 1930
Pareteone abyssalis Hartmann-Schröder, 1975
Pareucalanus attenuatus (Dana, 1849)
Pareurythoe borealis (M. Sars, 1862)
Parexogone hebes (Webster & Benedict, 1884)
Parhyalinoecia apalpata Hartmann-Schröder, 1975
Parhypania brevispinis (Grimm in Grube, 1860)
Parophryotrocha isochaeta (Eliason, 1962)
Parougia albomaculata (Åkesson & Rice, 1992)
Pionosyllis pulligera (Krohn, 1852)
Pionosyllis serrata Southern, 1914
Pionosyllis serratisetosa López, San Martín & Jiménez, 1997
Pionosyllis subterranea Hartmann-Schröder, 1956
Pionosyllis suchumica Czerniavsky, 1881
Pionosyllis weismanni Langerhans, 1879
Pirakia punctifera (Grube, 1860)
Piromis eruca (Claparède, 1870)
Pisione parapari Moreira, Quintas & Troncoso, 2000
Pisione puzae Siewing, 1953
Phycopsis setosa (Bowerbank, 1873)
Phyllochaetopterus gracilis Grube, 1863
Phyllochaetopterus major Claparède, 1869
Phyllochaetopterus socialis Claparède, 1869
Phyllochaetopterus solitarius Rioja, 1917
Phyllodoce bruneoviridis Saint-Joseph, 1898
Phyllodoce citrina Malmgren, 1865
Phyllodoce gervillei Audouin & Milne Edwards, 1833
Phyllodoce groenlandica Örsted, 1842
Phyllodoce lamelligera Johnston
Phyllodoce laminosa Savigny in Lamarck, 1818
Phyllodoce lineata (Claparède, 1870)
Phyllodoce longifrons Ben-Eliahu, 1972
Phyllodoce longipes Kinberg, 1866
Phyllodoce macropapillosa Saint-Joseph, 1895
Phyllodoce macrophthalma Schmarda, 1861
Phyllodoce maculata (Linnaeus, 1767)
Phyllodoce madeirensis Langerhans, 1880
Phyllodoce malmgreni Gravier, 1900
Phyllodoce mucosa Örsted, 1843
Phyllodoce pusilla (Claparède, 1870)
Phyllodoce rosea (McIntosh, 1877)
Phyllodoce schmardaei Day, 1963
Phyllodoce (Anaitides) groenlandica Örsted, 1842
Phylo foetida (Claparède, 1869)
Phylo grubei (McIntosh, 1910)
Phylo kupfferi (Ehlers, 1874)
Phylo norvegicus (M. Sars in G.O. Sars, 1872)
Physalia physalis (Linnaeus, 1758)
Physcaphora decorticans Hanitsch, 1895
Physophora gilmeri Pugh, 2005
Physophora hydrostatica Forsskål, 1775
Physsophora bijuga Delle Chiaje, 1844
Physsophora rosacea Forsskål, 1775
Paranaitis abyssalis (Hartmann-Schröder, 1975)
Paranaitis kosteriensis (Malmgren, 1867)
Paranaitis uschakovi Eibye-Jacobsen, 1991
Paranaitis wahlbergi (Malmgren, 1865)
Paraninoe fusca (Moore, 1911)
Paranymphon bifilarium Arango, 2009
Paraonides lyra [auctt.]
Paraonides neapolitana (Cerruti, 1909)
Paraonis fulgens (Levinsen, 1884)
Paraonis gracilis (Tauber, 1879)
Paraonis uncinatus Hartman, 1965
Paraphrixus adriaticus Nierstrasz & Brender à Brandis, 1931
Paraphronima crassipes Claus, 1879
Paraphronima gracilis Claus, 1879
Parapionosyllis brevicirra Day, 1954
Parapionosyllis cabezali Parapar, San Martín & Moreira, 2000
Parapionosyllis elegans (Pierantoni, 1903)
Parapionosyllis gestans (Pierantoni, 1903)
Parapionosyllis macaronesiensis Brito, Núñez & San Martín, 2000
Parapionosyllis minuta (Pierantoni, 1903)
Parapionosyllis papillosa (Pierantoni, 1903)
Parapodrilus psammophilus Westheide, 1965
Paraprionospio alata (Moore, 1923)
Paraprionospio pinnata (Ehlers, 1901)
Paraprocerastea crocantinae San Martín & Alós, 1989
Paraprocerastea draculai San Martín & López, 2002
Parapronoe parva Claus, 1879
Pararchaster armatus Sladen, 1889
Pararchaster spinosissimus Sladen, 1889
Pleraplysilla spinifera (Schulze, 1879)
Plesiodiadema antillarum (A. Agassiz, 1880)
Pleurocrypta galateae Hesse, 1865
Pleurocrypta galatheae auct.
Pachycordyle michaeli (Berrill, 1948)
Pachycordyle navis (Millard, 1959)
Pachycordyle pusilla (Motz-Kossowska, 1905)
Pachymatisma intermedia (Schmidt, 1868)
Pachymatisma johnstonia (Bowerbank in Johnston, 1842)
Pachymatisma normani Sollas, 1888
Paedampharete acutiseries Russell, 1987
Paedophylax claparedii Langerhans, 1879
Paedophylax dispar Webster, 1879
Paedophylax hebes Webster & Benedict, 1884
Paedophylax insignis Langerhans, 1879
Paedophylax langerhansi Czerniavsky, 1881
Paedophylax maderensis (Czerniavsky, 1881)
Paedophylax veruger Claparède, 1868
Palaeobrissus Hilgardi A. Agassiz, 1880
Palaeotropus hirondellei Koehler, 1895
Palaeotropus josephinae Lovén, 1871
Paleanotus bellis (Johnson, 1897)
Paleanotus chrysolepis Schmarda, 1861
Paleanotus schmardai Mileikovsky, 1962
Plexechinus hirsutus Mortensen, 1905
Plinthaster dentatus (Perrier, 1884)
Pliobothrus gracilis Zibrowius & Cairns, 1992
Pliobothrus symmetricus Pourtalès, 1868
Pliophrixus philonika Caroli, 1930
Plocamia ambigua (Bowerbank, 1866)
Plocamia arctica Koltun, 1959
Plocamia coriacea (Bowerbank, 1874)
Plocamia elegans Ridley & Dendy, 1887
Plocamia fragilis Koltun, 1959
Plocamia inconstans Topsent, 1925
Plocamiancora arndti Alander, 1942
Plocamilla circonflexa Lévi, 1960
Plocamilla coriacea (Bowerbank, 1874)
Plocamilla erecta (Ferrer-Hernandez, 1923)
Plocamione dirrhopalina Topsent, 1927
Plocamione hystrix (Ridley & Duncan, 1881)
Plocamionida fragilis (Koltun, 1959)
Plocamionida microcionides (Carter, 1876)
Plocamionida tylotata Brøndsted, 1932
Plocamiopsis signata Topsent, 1904
Plotohelmis capitata (Greeff, 1876)
Plotohelmis tenuis (Apstein, 1900)
Plumohalichondria microcionides Carter, 1876
Plumohalichondria papillata Arnesen, 1903
Plumohalichondria plumosa (Montagu, 1814)
Plumularia halecioides Alder, 1859
Plumularia linkoi Naumov, 1960
Plumularia obliqua (Johnston, 1847)
Plumularia setacea (Linnaeus, 1758)
Plutonaster abbreviatus Sladen, 1889
Plutonaster agassizi (Verrill, 1880)
Plutonaster bifrons (Wyville Thomson, 1873)
Plutonaster granulosus Perrier, 1891
Plutonaster notatus Sladen, 1889
Plutonaster proteus H.L. Clark, 1923
Podarke agilis Ehlers, 1864
Podarke obscura Verrill, 1873
Podarke pallida (Claparède, 1864)
Podarkeopsis arenicolus (La Greca, 1946)
Podarkeopsis capensis (Day, 1963)
Podarkeopsis galangaui Laubier, 1961
Podocidaris sculpta A. Agassiz, 1869
Podocoryna borealis (Mayer, 1900)
Podocoryna carnea M. Sars, 1846
Podocoryna exigua (Haeckel, 1879)
Podocoryna hartlaubi Neppi & Stiasny, 1911
Podocoryna minuta (Mayer, 1900)
Petta pusilla Malmgren, 1866
Pettiboneia urciensis Campoy & San Martín, 1980
Phakellia arctica Vosmaer, 1885
Phakellia beringensis Hentschel, 1929
Phakellia bowerbanki Vosmaer, 1885
Phakellia connexiva Ridley & Dendy, 1887
Phakellia dalli Lambe, 1895
Phakellia robusta Bowerbank, 1866
Phakellia rugosa (Bowerbank, 1866)
Phakellia setosa (Bowerbank, 1873)
Phakellia vermiculata (Bowerbank, 1866)
Phakettia cribrosa (Miklucho-Maclay, 1870)
Phalacrophorus pictus Greeff, 1879
Phalacrophorus uniformis Reibisch, 1895
Phalacrostemma cidariophilum Marenzeller, 1895
Phalacrostemma elegans Fauvel, 1911
Phalacrostemma norvegicum Strømgren, 1971
Pheronema carpenteri (Thomson, 1869)
Pherusa arctica Støp-Bowitz, 1948
Polybostrichus longosetosus Örsted, 1843
Polybostrichus muelleri Keferstein, 1862
Polybostrichus mülleri [auct. original misspelling]
Polycirrus arcticus Sars, 1865
Polycirrus arenivorus (Caullery, 1915)
Polycirrus aurantiacus Grube, 1860
Polycirrus caliendrum Claparède, 1869
Polycirrus denticulatus Saint-Joseph, 1894
Polycirrus haematodes (Claparède, 1864)
Polycirrus jubatus Bobretzky, 1869 in Annenkova-Chlopina, 1924
Polycirrus latidens Eliason, 1962
Polycirrus medusa Grube, 1850
Polycirrus norvegicus Wollebaek, 1912
Polycirrus pallidus (Claparède, 1864)
Pleurocrypta longibranchiata (Bate & Westwood, 1868)
Pleurocrypta microbranchiata G.O. Sars, 1898
Pleurocrypta piriformis Bourdon, 1968
Pleurocrypta porcellanae Hesse, 1876
Pleurocrypta porcellanaelongicornis Hesse, 1876
Pleurocrypta strigosa Bourdon, 1968
Pleurocrypta strigosa Codreanu, Codreanu & Pike in Codreanu, 1968
Pleurocryptella superba Bourdon, 1981
Pontaster forcipatus Sladen, 1889
Pontaster hebitus Sladen, 1889
Pontaster limbatus Sladen, 1889
Pontaster perplexus Perrier, 1894
Pontaster pristinus Sladen, 1889
Pontaster tenuispinus (Düben & Koren, 1846)
Pontaster venustus Sladen, 1889
Pontodora pelagica Greeff, 1879
Pontogammarus robustoides (Sars, 1894)
Pontogenia chrysocoma (Baird, 1865)
Pontogenia sericoma Ehlers, 1867
Porania gibbosa Leach in Gray, 1840
Porania grandis Verrill, 1878
Porania spinulosa Verrill, 1880
Porania (Porania) pulvillus (O.F. Müller, 1776)
Porania (Pseudoporania) stormi Dons, 1936
Poraniomorpha hispida (M. Sars, 1872)
Poraniomorpha rosea Danielssen & Koren, 1881
Poraniomorpha (Culcitopsis) borealis (Süssbach & Breckner, 1911)
Poraniomorpha (Poraniomorpha) bidens Mortensen, 1932
Poraniomorpha (Poraniomorpha) hispida (M. Sars, 1872)
Poraniomorpha (Poraniomorpha) tumida (Stuxberg, 1878)
Porcellanaster ceruleus Wyville Thomson, 1877
Porcellanaster eremicus Sladen, 1889
Pherusa falcata Støp-Bowitz, 1948
Pherusa flabellata (M. Sars in G.O. Sars, 1872)
Pherusa monilifera (Delle Chiaje, 1841)
Pherusa plumosa (Müller, 1776)
Phialidium discoideum (Mayer, 1900)
Phialidium islandicum Kramp, 1919
Phialidium mccradyi (Brooks, 1888)
Philocheras neglectus (Sars G.O., 1882)
Phisidia aurea Southward, 1956
Phisidia oculata (Langerhans, 1881)
Phloeodictyon aereum Topsent, 1904
Phloeodictyon reticulatum Topsent, 1904
Phloeodictyon vacuum Sarà, 1961
Phloeodictyum constructum (Rützler, 1965)
Phloeodictyum isodictyiforme (Carter, 1882)
Phlyctaenopora bitorquis Topsent, 1904
Phlyctaenopora (Phlyctaenopora) bitorquis Topsent, 1904
Pholoe assimilis Örsted, 1845
Pholoe baltica Örsted, 1843
Pholoe dorsipapillata Marenzeller, 1893
Pholoe fauveli Kirkegaard, 1983
Pholoe inornata Johnston, 1839
Pholoe longa (O.F. Müller, 1776)
Pholoe minuta (Fabricius, 1780)
Pholoe pallida Chambers, 1985
Pholoe synophthalmica Claparède, 1868
Pholoe tecta Stimpson, 1854
Pholoe tuberculata Southern, 1914
Pholoides dorsipapillatus (Marenzeller, 1893)
Phorbas areolata Bergquist & Fromont, 1988
Phorbas arneseni (Topsent, 1913)
Phorbas bihamigerum (Waller, 1878)
Phorbas demonstrans (Topsent, 1890)
Phorbas dendyi (Topsent, 1890)
Pilargis verrucosa Saint-Joseph, 1899
Pileolaria militaris Claparède, 1870
Pileolaria rosepigmentata (Uchida, 1971)
Pilochrota inermis Topsent, 1904
Pilochrota mediterranea Topsent, 1893
Pilochrota ventricosa Topsent, 1904
Pione abyssorum (Carter, 1874)
Pione hancocki (Schmidt, 1862)
Pione stationis (Nassonow, 1883)
Pione vastifica (Hancock, 1849)
Pionosyllis anophthalma Capaccioni & San Martín, 1989
Pionosyllis compacta Malmgren, 1867
Pionosyllis confusa Hartmann-Schröder, 1960
Pionosyllis dionisi Núñez & San Martín, 1991
Pionosyllis divaricata (Keferstein, 1862)
Pionosyllis elegans Pierantoni, 1903
Pionosyllis enigmatica (Wesenberg Lund, 1950)
Pionosyllis gestans Pierantoni, 1903
Pionosyllis gorringensis Hartmann-Schröder, 1977
Pionosyllis lamelligera Saint Joseph, 1887
Pionosyllis longocirrata Saint Joseph, 1887
Pionosyllis malmgreni Mc Intosh, 1869
Pionosyllis minuta Pierantoni, 1903
Pionosyllis morenoae San Martín, 1984
Pionosyllis neapolitana Goodrich, 1930
Pionosyllis oculata Hartmann-Schröder, 1960
Pionosyllis papillosa Pierantoni, 1903
Pionosyllis prolifera (Krohn, 1852)
Pionosyllis propeweismanni Dauvin & Lee, 1983
Pourtalesia miranda A. Agassiz, 1869
Pourtalesia miranda Auctt., non A. Agassiz, 1869
Pourtalesia paradoxa Mortensen, 1905
Pourtalesia phiale Thomson, 1877
Pourtalesia wandeli Mortensen, 1905
Pozziella clavisaepta Topsent, 1896
Praxillella affinis (M. Sars in G.O. Sars, 1872)
Praxillella challengeriae (McIntosh, 1885)
Praxillella gracilis (M. Sars, 1861)
Praxillella praetermissa (Malmgren, 1865)
Praxillella trifila Hartman, 1960
Praxillura longissima Arwidsson, 1906
Praya dubia (Quoy & Gaimard, 1833)
Praya reticulata (Bigelow, 1911)
Prayola tottoni Carré, 1969
Prionospio banyulensis Laubier, 1966
Prionospio caspersi Laubier, 1962
Prionospio cirrifera Wirén, 1883
Prionospio decipiens Söderström, 1920
Prionospio dubia Day, 1961
Prionospio ehlersi Fauvel, 1928
Prionospio fallax Söderström, 1920
Prionospio malmgreni Claparède, 1869
Prionospio multibranchiata Berkeley, 1927
Prionospio ockelmanni Pleijel, 1985
Prionospio plumosa Treadwell, 1931
Prionospio pygmaeus Hartman, 1961
Prionospio salzi Laubier, 1970
Prionospio sexoculata Augener, 1918
Prionospio steenstrupi Malmgren, 1867
Prionospio treadwelli Hartman, 1951
Prionospio (Minuspio) fauchaldi Maciolek, 1985
Prionospio (Prionospio) dubia Day, 1961
Prionospio (Prionospio) ehlersi Fauvel, 1928
Prionospio (Prionospio) steenstrupi Malmgren, 1867
Prionospio (Prionospio) tripinnata Maciolek, 1985
Pristigloma minima (Seguenza, 1877)
Proceraea albocephala Nygren, Sundkvist, Mikac & Pleijel, 2010
Pisione remota (Southern, 1914)
Pista cretacea (Grube, 1860)
Pista cristata (Müller, 1776)
Pista elongata Moore, 1909
Pista lornensis (Pearson, 1969)
Pista maculata Marenzeller, 1884
Pista malmgreni Saphronova & Jirkov in Jirkov, 2001
Pista mediterranea de Gaillande, 1970
Pista mirabilis McIntosh, 1885
Pista unibranchia Day, 1963
Pityrete azoricum (Topsent, 1901)
Placinolopha moncharmonti (Sarà, 1960)
Placostegus crystallinus (non Scacchi, 1836) sensu Zibrowius, 1968
Placostegus langerhansi Marenzeller, 1893
Plagiobrissus affinis
Plagiobrissus costai (Gasco, 1876)
Plagiobrissus (Rhabdobrissus) costae (Gasco, 1876)
Plakina bowerbanki (Sarà, 1960)
Plakina brachylopha Topsent, 1927
Plakina crypta Muricy, Boury-Esnault, Bézac & Vacelet, 1998
Plakina endoumensis Muricy, Boury-Esnault, Bézac & Vacelet, 1998
Plakina jani Muricy, Boury-Esnault, Bézac & Vacelet, 1998
Plakina monolopha Schulze, 1880
Plakina reducta (Pulitzer-Finali, 1983)
Plakina topsenti (Pouliquen, 1972)
Plakina weinbergi Muricy, Boury-Esnault, Bézac & Vacelet, 1998
Plakinastrella copiosa Schulze, 1880
Plakinastrella mixta Maldonado, 1992
Plakinastrella oxeata Topsent, 1904
Plakinastrella trunculifera Topsent, 1927
Plakosyllis brevipes Hartmann-Schröder, 1956
Plakosyllis quadrioculata Perkins, 1981
Platycopia perplexa Sars G.O., 1911
Podocoryna pruvoti (Motz-Kossowska, 1905)
Podocoryna sarsii Steenstrup, 1850
Podocoryne areolata (Alder, 1862)
Podocoryne borealis (Mayer, 1900)
Podocoryne minima (Trinci, 1903)
Podocorynoides minima (Trinci, 1903)
Podosphaeraster thalassae Cherbonnier, 1970
Podospongia lovenii Bocage, 1869
Poecillastra amygdaloides (Carter, 1876)
Poecillastra armata Hanitsch, 1895
Poecillastra compressa (Bowerbank, 1866)
Poecillastra crassiuscula (Sollas, 1886)
Poecillastra dissimilis (Sarà, 1959)
Poecillastra fragilis Vosmaer, 1894
Poecillastra rudiastra Pulitzer-Finali, 1983
Poecillastra saxicola (Topsent, 1892)
Poecillastra symbiotica Topsent, 1902
Poecilochaetus fauchaldi Pilato & Cantone, 1976
Poecilochaetus fulgoris Claparède in Ehlers, 1875
Poecilochaetus serpens Allen, 1904
Polaruschakov polaris (Uschakov, 1976)
Polaruschakov reyssi Pettibone, 1976
Poliopogon amadou Thomson, 1878
Progoniada regularis Hartman, 1965
Prolopadorrhynchus appendiculatus (Southern, 1909)
Prolopadorrhynchus nationalis (Reibisch, 1895)
Pronax plumosa (Montagu, 1814)
Pronax repens (Topsent, 1904)
Pronaxella plumosa (Montagu, 1814)
Propontocypris dispar Müller, 1894
Propontocypris intermedia (Brady, 1868)
Propontocypris pellucida Müller, 1894
Propontocypris subfusca (Müller, 1894)
Polycirrus plumosus (Wollebaek, 1912)
Polycirrus tenuisetis Langerhans, 1881
Polycope striata Müller, 1894
Polycyathus muellerae (Abel, 1959)
Polydora antennata Claparède, 1869
Polydora armata Langerhans, 1881
Polydora caeca (Örsted, 1843)
Polydora caulleryi Mesnil, 1897
Polydora ciliata (Johnston, 1838)
Polydora colonia Moore, 1907
Polydora cornuta Bosc, 1802
Polydora flava Claparède, 1870
Polydora giardi
Polydora guillei Laubier & Ramos, 1974
Polydora hermaphroditica Hannerz, 1956
Polydora hoplura Claparède, 1869
Polydora langerhansi Mesnil, 1896
Polydora ligni Webster, 1879
Polydora limicola Annenkova, 1934
Polydora posthamata Jones, 1962
Polydora quadrilobata Jacobi, 1883
Polydora saintjosephi Eliason, 1920
Polydora socialis (Schmarda, 1861)
Polydora spongicola Berkeley & Berkeley, 1950
Polygordius appendiculatus Fraipont, 1887
Polygordius erythrophthalmus (Giard, 1880)
Polygordius lacteus Schneider, 1868
Polygordius neapolitanus Fraipont, 1887
Polygordius triestinus Woltereck in Hempelmann, 1906
Polygordius villoti Perrier, 1875
Polymastia boletiformis (Lamarck, 1815)
Polymastia ectofibrosa Boury-Esnault, Pansini & Uriz, 1994
Polymastia grimaldii (Topsent, 1913)
Polymastia hispida (Bowerbank, 1864)
Porcellanaster granulosus Perrier, 1885
Porcellanaster inermis Perrier, 1885
Porcellanaster irregularis Lieberkind, 1932
Poriocidaris purpurata (Thomson, 1872)
Porocidaris gracilis Sladen, 1890
Porocidaris purpurata Thomson, 1872
Posterula sarsi (Smitt, 1868)
Posterula sarsii (Smitt, 1868)
Potamethus breviuncatus Hartmann-Schröder, 1977
Potamethus filiformis Hartmann-Schröder, 1977
Potamethus malmgreni (Hansen, 1878)
Potamethus spathiferus (Ehlers, 1887)
Potamilla neglecta (Sars, 1851)
Potamilla reniformis (Bruguière, 1789)
Potamilla socialis Langerhans, 1884
Potamilla torelli (Malmgren, 1866)
Potamis spathiferus Ehlers, 1887
Potamocypris arcuata (Sars, 1903)
Potamocypris bituminicola Klie, 1940
Pourtalesia aff. alcocki Koehler, 1914
Pourtalesia jeffreysi Thomson, 1873
Protomystides bidentata Lagerhans
Protomystides brunnea Hartmann-Schröder, 1963
Protomystides exigua (Eliason, 1962)
Protoschmidtia foraminosa Czerniavsky, 1880
Protoschmidtia grimmi Czerniavsky, 1880
Protoschmidtia simplex Czerniavsky, 1880
Protoschmidtia transitans Czerniavsky, 1880
Protosuberites brevispinus (de Laubenfels, 1951)
Protosuberites capillitium (Topsent, 1892)
Protosuberites denhartogi van Soest & de Kluijver, 2003
Protosuberites epiphytum (Lamarck, 1815)
Protosuberites epiphytum (sensu Topsent, 1900)
Proceraea aurantiaca (Claparède, 1868)
Proceraea brachycephala Marenzeller, 1874
Proceraea fasciata Langerhans, 1879
Proceraea luxurians Marenzeller, 1874
Proceraea macrophthalma Marenzeller, 1875
Proceraea madeirensis Nygren, 2004
Proceraea paraurantiaca Nygren, 2004
Proceraea picta Ehlers, 1864
Proceraea pleijeli Nygren, 2004
Proceraea rzhavskyi Britayev & San Martín, 2001
Proceraea scapularis (Claparède, 1864)
Procerastea halleziana Malaquin, 1893
Procerastea nematodes Langerhans, 1884
Procerastea perrieri Gravier, 1900
Procerastea pori Ben-Eliahu, 1977
Proclea graffi [auctt.]
Proclea graffii (Langerhans, 1884)
Proclymene muelleri (Sars, 1856)
Progebiophilus euxinicus (Popov, 1929)
Pseudobrania euritmica Sardá, 1984
Pseudocapitella fauveli Harmelin, 1964
Pseudocapitella incerta Fauvel, 1913
Pseudoclymene quadrilobata (M. Sars, 1856)
Pseudoclytia pentata Mayer, 1900
Pseudofabricia aberrans Cantone, 1972
Pseudofabriciola analis Fitzhugh, Giangrande & Simboura, 1994
Pseudofabriciola longipyga Fitzhugh, Giangrande & Simboura, 1994
Pseudohalichondria clavatancora (Topsent, 1927)
Pseudohalichondria schmidti (Topsent, 1898)
Pseudohalosydna rosea Fauvel, 1913
Pseudomalacoceros cantabra (Rioja, 1918)
Pseudomalacoceros tridentata (Southern, 1914)
Pseudomalletia pianii Van Aartsen & Giannuzzi-Savelli, 1991
Phorbas equiosculatus (Pansini, 1987)
Phorbas papillatus (Arnesen, 1903)
Phorbas plumosus (Montagu, 1814)
Phorbas punctatus Picton & Goodwin, 2007
Phorbas repens (Topsent, 1904)
Phorbas roemeri (Hentschel, 1929)
Phorbas tailliezi Vacelet & Perez, 2008
Phorbas topsenti Vacelet & Perez, 2008
Phormosoma luculentum Koehler, 1896, non A. Agassiz, 18??
Phormosoma petersii A. Agassiz, 1880
Phormosoma placenta Thomson, 1872
Phormosoma uranus Koehler, 1898, non Wyville Thomson, 1877
Phormosoma uranus Thomson, 1877
Pseudopallene difficile Arango, 2009
Pseudopolycope (Pseudopolycope) striata Müller, 1894
Pseudopolydora antennata (Claparède, 1869)
Pseudopolydora kempi (Southern, 1921)
Pseudopolydora paucibranchiata (Okuda, 1937)
Pseudopolydora pulchra (Carazzi, 1893)
Pseudoporania stormi Dons, 1936
Pseudopotamilla reniformis (Bruguière, 1789)
Pseudoscalibregma parvum (Hansen, 1879)
Pseudosuberites fallax (Bowerbank, 1866)
Pseudosuberites hyalinus (Ridley & Dendy, 1886)
Pseudosuberites mollis Topsent, 1925
Pseudosuberites montiniger (Carter, 1880)
Pseudosuberites sadko Koltun, 1966
Pseudosuberites simplicima (Bowerbank, 1874)
Pseudosuberites sulphureus (Bowerbank, 1866)
Pseudosyllides balearica San Martín, 1982
Pseudosyllis brevipennis Grube, 1863
Pseudotrachya hystrix (Topsent, 1890)
Pseudovermilia occidentalis (McIntosh, 1885)
Polymastia laganoides Lambe, 1895
Polymastia mespilus Schmidt, 1873
Polymastia penicillus (Montagu, 1814)
Polymastia robusta Bowerbank, 1866
Polymastia tissieri (Vacelet, 1961)
Polymastus paradoxus Claparède, 1864
Polynoe astericola Delle Chiaje, 1841
Polynoe caeciliae Fauvel, 1913
Polynoe laevis Audouin & Milne Edwards, 1832
Polynoe longissima Blainville, 1828
Polynoe scolopendrina Savigny, 1822
Polynoe zonata Langerhans, 1880
Polynoe (Nemidia) antillicola (Augener, 1906)
Polynoe (Robertianella) synophthalma McIntosh, 1885
Polyodontes maxillosus (Ranzani, 1817)
Polyophthalmus pictus (Dujardin, 1839)
Polyphysia crassa (Örsted, 1843)
Polyplumaria flabellata Sars, 1874
Polyplumaria frutescens (Ellis & Solander, 1786)
Pomatoceros lamarcki (Quatrefages, 1866)
Pomatoceros lamarckii (Quatrefages, 1866)
Pomatoceros triqueter (Linnaeus, 1758)
Pomatoleios kraussii (Baird, 1865)
Pomatostegus polytrema (Philippi, 1844)
Quasillina intermedia Boury-Esnault, Pansini & Uriz, 1994
Questa caudicirra Hartman, 1966
Quintoxilla arcitenens (Topsent, 1892)
Radiaster tizardi (Sladen, 1882)
Radiella sarsi (Ridley & Dendy, 1886)
Radiella sol Schmidt, 1870
Raphidrilus nemasoma Monticelli, 1910
Raricirrus beryli Petersen & George, 1991
Raspaciona aculeata (Johnston, 1842)
Propontocypris trigonella (Sars, 1866)
Prosphaerosyllis adelae (San Martín, 1984)
Prosphaerosyllis campoyi (San Martín, Acero, Contonente & Gomez, 1982)
Prosphaerosyllis giandoi (Somaschini & San Martín, 1994)
Prosphaerosyllis longicauda (Webster & Benedict, 1887)
Prosphaerosyllis tetralix (Eliason, 1920)
Prosphaerosyllis xarifae (Hartmann-Schröder, 1960)
Prosuberites brevispinus de Laubenfels, 1951
Prosuberites modestus Pulitzer-Finali, 1978
Prosuberites rugosus Topsent, 1893
Protiara tetranema (Péron & Lesueur, 1810)
Protis arctica (Hansen, 1879)
Protoaricia capsulifera (Bobretzky, 1870)
Protoaricia oerstedi (Claparède, 1864)
Protodorvillea kefersteini (McIntosh, 1869)
Protodrilus adhaerens Jägersten, 1952
Protodrilus affinis Jouin, 1968
Protodrilus albicans Jouin, 1970
Protodrilus brevis Jouin, 1970
Protodrilus chaetifer Remane, 1925
Protodrilus ciliatus Jägersten, 1952
Protodrilus flavocapitatus (Uljanin, 1877)
Protodrilus gracilis von Nordheim, 1989
Protodrilus hatscheki Pierantoni, 1908
Protodrilus helgolandicus von Nordheim, 1983
Protodrilus hypoleucus Armenante, 1903
Protodrilus leuckartii Hatschek, 1881
Protodrilus mirabilis Czerniavsky, 1881
Protodrilus oculifer Pierantoni, 1908
Protodrilus purpureus (Schneider, 1868)
Protodrilus robustus Jägersten, 1952
Protodrilus rubropharyngeus Jägersten, 1940
Platynereis coccinea (Delle Chiaje, 1822)
Platynereis dumerilii (Audouin & Milne Edwards, 1834)
Platynereis massiliensis (Moquin-Tandon, 1869)
Platynereis nadiae Abbiati & Castelli, 1992
Platynereis pulchella Gravier, 1901
Platyscelus serratulus Stebbing, 1888
Plectroninia hindei Kirkpatrick, 1900
Plectroninia norvegica Könnecker, 1989
Ptilohyale plumicornis (Heller, 1866)
Cribrilaria innominata (Couch, 1844)
Pusillotrocha akessoni Westheide & von Nordheim, 1985
Pycnogonum kussakini Turpaeva, 2000
Pycnogonum rhinoceros Dohrn, 1881
Pygospio elegans Claparède, 1863
Pyriporoides bathyalis (Rosso & Taylor, 2002)
Pyrosoma aherniosum Seeliger, 1895
Pyrosoma benthica Monniot & Monniot, 1966
Pyrosoma sedentarum Sebastian, 1971
Pyrosoma spinosum Herdman, 1888
Pytheas alba Vacelet, 1969
Pytheas atra Topsent, 1890
Pytheas digitifera Lévi, 1959
Pythonaster atlantidis A.H. Clark, 1948
Reniera rhizophora Vacelet, 1969
Reniera rossica Hentschel, 1929
Reniera sarai Pulitzer-Finali, 1969
Reniera solowetzkaja Hentschel, 1929
Reniera stirpescens Topsent, 1925
Reniera tromsoica Hentschel, 1929
Reniera ventilabra Fristedt, 1887
Rhabderemia fascicularis Topsent, 1927
Rhabderemia gallica van Soest & Hooper, 1993
Rhabderemia minutula (Carter, 1876)
Rhabderemia mutans Topsent, 1927
Protosuberites modestus (Pulitzer-Finali, 1978)
Protosuberites prototipus Swartschewsky, 1905
Protosuberites rugosus (Topsent, 1893)
Protula alberti Fauvel, 1909
Protula globifera (Théel, 1878)
Protula intestinum (Lamarck, 1818)
Protula lusitanica McIntosh, 1885
Protula tubularia (Montagu, 1803)
Psamathe fusca Johnston, 1836
Psammechinus microtuberculatus (Blainville, 1825)
Psammoclema commune (Carter, 1885)
Psammoclema finmarchicum (Hentschel, 1929)
Psammoclema nicaeense (Pulitzer-Finali & Pronzato, 1980)
Psammodriloides fauveli Swedmark, 1958
Psammodrilus balanoglossoides Swedmark, 1952
Psammolyce arenosa (Delle Chiaje, 1830)
Psammopemma commune (Carter, 1885)
Psammopemma nicaeense Pulitzer-Finali & Pronzato, 1980
Pseudarchaster concinnus Verrill, 1894
Pseudarchaster gracilis (Sladen, 1889)
Pseudarchaster granuliferus Verrill, 1899
Pseudarchaster intermedius Sladen, 1889
Pseudarchaster ordinatus Verrill, 1899
Pseudarchaster parelii (Düben & Koren, 1846)
Pseudarchaster tessellatus Sladen, 1889
Pseudaster cordifer Perrier, 1885
Pseudaxinella sulcata Schmidt, 1875
Pseudaxinyssa digitata Cabioch, 1968
Pseudeulalia exigua Eliason, 1962
Pseudeurythoe hemuli Fauchald, 1972
Pseudione affinis (Sars G.O., 1882)
Pseudione borealis Caspers, 1939
Pseudione callianassae Kossmann, 1881
Raspaciona calva Sarà, 1958
Raspaciona robusta Sarà, 1958
Raspaigella brunnea Schmidt, 1868
Raspailia aculeata (Johnston, 1842)
Raspailia agnata (Topsent, 1896)
Raspailia falcifera Topsent, 1890
Raspailia formidabilis Hanitsch, 1895
Raspailia freyerii Schmidt, 1862
Raspailia hispida (Montagu, 1814)
Raspailia humilis Topsent, 1892
Raspailia pumila (Bowerbank, 1866)
Raspailia ramosa (Montagu, 1814)
Raspailia rectangula (Bowerbank, 1874)
Raspailia setosa (Bowerbank, 1873)
Raspailia viminalis Schmidt, 1862
Raspailia virgultosa (Bowerbank, 1866)
Raspailia (Clathriodendron) hispida (Montagu, 1814)
Raspailia (Parasyringella) agnata (Topsent, 1896)
Raspailia (Parasyringella) falcifera Topsent, 1890
Raspailia (Parasyringella) humilis Topsent, 1892
Raspailia (Raspailia) bathyalis Boury-Esnault, Pansini & Uriz, 1994
Raspailia (Raspailia) ramosa (Montagu, 1814)
Raspailia (Raspailia) viminalis Schmidt, 1862
Raspailia (Syringella) falcifera Topsent, 1890
Raspailia (Syringella) humilis Topsent, 1892
Rathkea octopunctata (M. Sars, 1835)
Raymondcia majuscula (Smitt, 1867)
Regadrella phoenix Schmidt, 1880
Reniera accomodata Schmidt, 1868
Reniera alba Schmidt, 1862
Reniera albapontica Czerniavsky, 1880
Reniera aperta (Sarà, 1960)
Reniera arctica Fristedt, 1887
Reniera citrina Topsent, 1892
Pseudomastus deltaicus Capaccioni-Azzati & Martin, 1992
Pseudomystides limbata (Saint-Joseph, 1888)
Pseudomystides spinachia Petersen & Pleijel in Pleijel, 1993
Pseudonereis anomala Gravier, 1900
Rhopalonema velatum Gegenbaur, 1857
Rhopia mediterranea Gray, 1840
Rhynchonereella gracilis Costa, 1864
Rhynchonerella petersi (Langerhans, 1880)
Rhynchonerella petersii (Langerhans, 1880)
Rhynchothorax anophtalmus Arnaud, 1972
Ridgewayia marki (Esterly, 1911)
Sabella bipunctata Baird, 1865
Sabella crassicornis Sars, 1851
Sabella discifera Grube, 1874
Sabella fabricii Krøyer, 1856
Sabella flabellata Savigny in Grube, 1850
Sabella murrayi McIntosh, 1916
Sabella pavonina Savigny, 1822
Sabella penicillus Linnaeus, 1767
Sabella spallanzanii (Gmelin, 1791)
Sabella variabilis Langerhans, 1884
Sabellacheres drachi Laubier, 1968
Sabellaria alcocki Gravier, 1906
Sabellaria alveolata (Linnaeus, 1767)
Sabellaria spinulosa Leuckart, 1849
Sabellaria taurica (Rathke, 1837)
Sabellides borealis M. Sars, 1856
Sabellides octocirrata (M. Sars, 1835)
Sabellides sibirica Wirén, 1883
Saccella commutata (Philippi, 1844)
Saccella illirica (Carrozza, 1987)
Saccocirrus major Perantoni, 1907
Saccocirrus papillocercus Bobretzky, 1872
Saccocirrus parvus Gerlach, 1953
Rhabderemia parasitica (Carter, 1876)
Rhabderemia profunda Boury-Esnault, Pansini & Uriz, 1994
Rhabdeurypon spinosum Vacelet, 1969
Rhabdobaris implicata Pulitzer-Finali, 1983
Rhabdobrissus costae (Gasco, 1876)
Rhabdobrissus perrieri Bernard, 1895
Rhabdodictyum delicatum Schmidt, 1880
Rhabdopectella tintinnus Schmidt, 1880
Rhamphobrachium agassizi Ehlers, 1887
Rhamphobrachium brevibranchiatum (Ehlers, 1875)
Rhamphobrachium (Spinigerium) brevibrachiatum (Ehlers, 1875)
Rhaphidophlus jolicoeuri Topsent, 1892
Rhaphidorus setosus Topsent, 1898
Rhaphidotheca marshallhalli Kent, 1870
Rhaphisia laxa Topsent, 1892
Rhegaster murrayi Sladen, 1883
Rhegaster tumidus Ludwig, 1900
Rhizaxinella gracilis (Lendenfeld, 1898)
Rhizaxinella schaudinni Hentschel, 1929
Rhizaxinella uniseta Topsent, 1904
Rhizochalina carotta Schmidt, 1870
Rhizochalina elongata Topsent, 1892
Rhizochalina fistulosa (Bowerbank, 1873)
Rhizoniera pedunculata Boury-Esnault, Pansini & Uriz, 1994
Rhizoniera rhizophora (Vacelet, 1969)
Rhizophysa eysenhardtii Gegenbaur, 1859
Rhizophysa filiformis (Forsskål, 1775)
Rhizorhagium arenosum (Alder, 1862)
Rhizorhagium navis Millard, 1959
Rhodine gracilior Tauber, 1879
Rhodine loveni Malmgren, 1865
Schizoscelus ornatus Claus, 1879
Schmidtia intermedia Czerniavsky, 1880
Reniera clavata Levinsen, 1887
Reniera crassa Carter, 1876
Reniera cratera Schmidt, 1862
Reniera fibulata Schmidt, 1862
Reniera filholi Topsent, 1890
Reniera filigrana Schmidt, 1862
Reniera flavescens Topsent, 1893
Reniera fulva Topsent, 1893
Reniera grossa Schmidt, 1864
Reniera implexa Schmidt, 1868
Reniera inflata Schmidt, 1868
Reniera lenis Topsent, 1892
Reniera magna Vacelet, 1969
Reniera mamillata Griessinger, 1971
Reniera membranacea Schmidt, 1868
Reniera mucosa Griessinger, 1971
Reniera nigricans Czerniavsky, 1880
Reniera oblonga Hansen, 1885
Reniera omissa Griessinger, 1971
Reniera parietalis Topsent, 1893
Reniera perlucida Griessinger, 1971
Reniera plana Topsent, 1892
Reniera pocilliformis Griessinger, 1971
Reniera poecillastroides Vacelet, 1969
Reniera pons Schmidt, 1870
Serpula israelitica Amoureux, 1977
Serpula lobiancoi Rioja, 1917
Serpula planorbis (Southward, 1963)
Serpula vermicularis Linnaeus, 1767
Sertularella distans (Lamouroux, 1816)
Sertularella gaudichaudi (Lamouroux, 1824)
Sertularella picta (Meyen, 1834)
Sertularia distans Lamouroux, 1816
Sertularia marginata (Kirchenpauer, 1864)
Sertularia polyzonias Linnaeus, 1758
Pseudione confusa (Norman, 1886)
Pseudione crenulata G.O. Sars, 1898
Pseudione dohrni Bonnier, 1900
Robertianella synophthalma McIntosh, 1885
Rosacea cymbiformis (Delle Chiaje, 1830)
Rosacea medusa (Metschnikoff, 1870)
Rossella velata Thomson, 1873
Rullierinereis anoculata Cantone, 1983
Rullierinereis faroensis Kirkegaard, 1998
Sarsia piriforma Edwards, 1983
Sarsia prolifera Forbes, 1848
Sarsia tubulosa (M. Sars, 1835)
Scalarispongia proficens (Pulitzer-Finali & Pronzato, 1981)
Scalarispongia scalaris (Schmidt, 1862)
Scalibregma celticum Mackie, 1991
Scalibregma inflatum Rathke, 1843
Scapharca demiri Piani, 1981
Sceptrella biannulata (Topsent, 1892)
Sceptrella insignis (Topsent, 1890)
Sceptrella triloba Schmidt, 1875
Sceptrintus richardi Topsent, 1898
Schaudinnia arctica Schulze, 1900
Schaudinnia rosea (Fristedt, 1887)
Schistomeringos caeca (Webster & Benedict, 1884)
Schistomeringos eliasoni Oug, 1978
Schistomeringos macilenta Oug, 1978
Schistomeringos neglecta (Fauvel, 1923)
Schistomeringos rudolphi (Delle Chiaje, 1828)
Schistomeringos rudolphii [Auct. misspelling]
Schistomeringos subaequalis Oug, 1978
Schizaster canaliferus (Lamarck, 1816)
Schizaster fragilis (Düben & Koren, 1844)
Schizaster incertus Aradas, 1850
Slabberia halterata Forbes, 1846
Psilaster andromeda (Müller & Troschel, 1842)
Psilaster cassiope Sladen, 1889
Psilaster patagiatus Sladen, 1889
Psilaster squameus H.L. Clark, 1941
Psilasteropsis humilis Koehler, 1907
Pteraster acicula (Downey, 1970)
Pteraster alveolatus Perrier, 1894
Pteraster aporus Ludwig, 1886
Pteraster hystrix Harvey, 1989
Pteraster militaris (O.F. Müller, 1776)
Pteraster multipes M. Sars, 1866
Pteraster obscurus (Perrier, 1891)
Pteraster personatus Sladen, 1891
Pteraster pulvillus (M. Sars, 1861)
Pteraster reductus Koehler, 1907
Pteraster sordidus Perrier, 1894
Pteraster (Temnaster) hexactis Verrill, 1894
Pterocirrus limbata (Claparède, 1868)
Pterocirrus limbatus (Claparède, 1868)
Pterocirrus macroceros (Grube, 1860)
Pterocirrus nidarosiensis Pleijel, 1987
Pterocirrus slastnikovi Annenkova, 1946 emend. Pleijel, 1996
Pterolysippe vanelli (Fauvel, 1936) sensu Eliason, 1955, emend
Pterosyllis formosa Claparède, 1863
Scrobicularia rubiginosa (Poli, 1795)
Scrupocaberea maderensis (Busk, 1860)
Scutastra cantabrica Ferrer-Hernández, 1912
Scypha ananus (Montagu, 1814)
Scypha ciliata (Fabricius, 1780)
Scypha elegans (Bowerbank, 1845)
Scypha fistulosa (Johnston, 1842)
Scypha quadrangulata (Schmidt, 1868)
Scypha raphanus (Schmidt, 1862)
Scypha scaldiensis Van Koolwijk, 1982
Protodrilus schneideri (Langerhans, 1881)
Protodrilus similis Jouin, 1970
Protodrilus spongioides Pierantoni, 1903
Protoesperia lobimana Czerniavsky, 1880
Protohydra leuckarti Greeff, 1870
Protoleodora aperata (Bush, 1905)
Sosanopsis wireni Hessle, 1917
Spanioplon fertile Topsent, 1890
Spanioplon osculosum (Topsent, 1892)
Spatagus flavescens O.F. Müller, 1776
Spatangus arcuarius Lamarck, 1816
Spatangus canaliferus Lamarck, 1816
Spatangus meridionalis Norman, 1868, non Risso, 1825
Spatangus ovatus Leske, 1778
Speleohvarella gamulini Krsinic, 2005
Spermosyllis torulosa Claparède, 1864
Sperosoma grimaldii Koehler, 1897
Sphaeraster berthae Dons, 1938
Sphaeriaster berthae Dons, 1938
Sphaeriaster bjoerlykkei (Dons, 1938)
Sphaeriodiscus bourgeti (Perrier, 1885)
Sphaerodoridium claparedii (Greeff, 1866)
Sphaerodoridium commensalis Lützen, 1961
Sphaerodoridium fauchaldi Hartmann-Schröder, 1993
Sphaerodoridium longiparapodium Katzmann, 1973
Sphaerodoridium minutum (Webster & Benedict, 1887)
Sphaerodoropsis baltica (Reimers, 1933)
Sphaerodoropsis chardyi Desbruyères, 1980
Sphaerodoropsis disticha (Eliason, 1962)
Sphaerodoropsis laureci Desbruyères, 1980
Sphaerodoropsis longipapillata Desbruyères, 1980
Sphaerodoropsis martinae Desbruyères, 1980
Sphaerodoropsis minuta (Webster & Benedict, 1887)
Sacconereis canariensis Greeff, 1879
Sacconereis cettensis Pagenstecher, 1892
Sacconereis helgolandica M. Müller, 1855
Sacconereis schultzii J. Müller, 1853
Saenuris barbata Grube, 1860
Sagitella kowalevskii Wagner, 1872
Salenia goesiana Lovén, 1874
Salenia hastigera A. Agassiz, 1879
Salenia pattersoni A. Agassiz, 1878
Salenia profundi Duncan, 1977
Salenocidaris hastigera (A. Agassiz, 1879)
Salenocidaris profundi (Duncan, 1877)
Salenocidaris varispina A. Agassiz, 1869
Salmacina aedificatrix Claparède, 1870
Salmacina dysteri (Huxley, 1855)
Salmacina incrustans Claparède, 1870
Salmacina setosa Langerhans, 1884
Salpa cylindrica Cuvier, 1804
Salvatoria alvaradoi (San Martín, 1984)
Salvatoria balani (Hartmann-Schröder, 1960)
Salvatoria celiae (Parapar & San Martín, 1992)
Salvatoria clavata (Claparède, 1863)
Salvatoria euritmica (Sardá, 1984)
Salvatoria limbata (Claparède, 1868)
Salvatoria neapolitana (Goodrich, 1930)
Salvatoria swedmarki (Gidholm, 1962)
Salvatoria vieitezi (San Martín, 1984)
Salvatoria yraidae (San Martín, 1984)
Samytha sexcirrata (M. Sars, 1856)
Samythella neglecta Wollebaek, 1912
Sarcotragus fasciculatus (Pallas, 1766)
Sarcotragus muscarum Schmidt, 1864
Sarcotragus spinosula sensu Schmidt, 1862
Sardorchestia pelecaniformis (Bellan-Santini & Ruffo, 1991)
Scypha setosa (Schmidt, 1862)
Scypha villosa (Haeckel, 1870)
Scyracepon tuberculosa Tattersall, 1905
Semisuberites cribrosa (Micklucho-Maclay, 1870)
Sericosura conta Bamber, 2009
Sericosura hedgpethi Bamber, 2009
Sericosura verenae (Child, 1987)
Serpula arenaria Linnaeus, 1758
Serpula cavernicola Fassari & Mollica, 1991
Serpula concharum Langerhans, 1880
Serpula glomerata Linnaeus, 1758
Spinther citrinus (Stimpson, 1845)
Spinther oniscoides Johnson, 1845
Spinther wireni Hartman, 1948
Spio armata (Thulin, 1957)
Spio crenaticornis Montagu, 1813
Spio decorata Bobretzky, 1870
Spio filicornis (Müller, 1776)
Spio goniocephala Thulin, 1957
Spio martinensis Mesnil, 1896
Spio mecznikowianus Claparède, 1869
Spio multioculata (Rioja, 1918)
Spiochaetopterus bergensis Gitay, 1969
Spiochaetopterus costarum (Claparède, 1869)
Spiochaetopterus typicus M. Sars, 1856
Spiophanes bombyx (Claparède, 1870)
Spiophanes duplex (Chamberlin, 1919)
Spiophanes reyssi Laubier, 1964
Spiophanes soederstroemi [auct.]
Spiophanes wigleyi Pettibone, 1961
Spirastrella aculeata Topsent, 1890
Spirobranchus kraussii (Baird, 1865)
Spirobranchus lamarcki (Quatrefages, 1866)
Spirobranchus tetraceros (Schmarda, 1861)
Spirobranchus triqueter (Linnaeus, 1758)
Schroederella laubieri Badalamenti & Castelli, 1991
Schuchertinia allmanii (Bonnevie, 1898)
Sclerasterias guernei Perrier, 1891
Sclerasterias neglecta (Perrier, 1891)
Sclerasterias richardi (Perrier, 1882)
Sclerobregma branchiatum Hartman, 1965
Sclerocheilus minutus Grube, 1863
Scolaricia haasi Monro, 1937
Scolaricia typica Eisig, 1914
Scolecithricella tenuiserrata (Giesbrecht, 1893)
Scolelepis ciliata (Keferstein, 1862)
Scolelepis foliosa (Audouin & Milne Edwards, 1833)
Scolelepis fuliginosa (Claparède, 1870)
Scolelepis girardi (Quatrefages, 1843)
Scolelepis korsuni Sikorski, 1994
Scolelepis laonicola (Tzetlin, 1985)
Scolelepis mesnili (Bellan & Lagardere, 1971)
Scolelepis squamata (Müller, 1806)
Scolelepis (Scolelepis) foliosa (Audouin & Milne Edwards, 1833)
Scolelepis (Scolelepis) squamata (O.F. Muller, 1806)
Scoletoma emandibulata (Pillai, 1961)
Scoletoma fragilis (O.F. Müller, 1776)
Scoletoma tetraura (Schmarda, 1861)
Scolopendra marina Slabber, 1781
Scoloplos armiger (Müller, 1776)
Scoloplos (Leodamas) chevalieri (Fauvel, 1902)
Scoloplos (Scoloplos) armiger (Müller, 1776)
Scopalina azurea Bibiloni, 1993
Stephalia corona Haeckel, 1888
Stephanaster bourgeti Perrier, 1885
Stephanasterias albula (Stimpson, 1853)
Stephanomia amphytridis Lesueur & Petit, 1807
Stephanomia bijuga (Delle Chiaje, 1844)
Sessibugula barrosoi Lopez de la Cuadra & Garcia-Gomez, 1994
Siboglinum leucopleurum Flügel & Callsen-Cencic, 1993
Sidonops mesotriaena Hentschel, 1929
Sidonops ramosa Topsent, 1928
Sigalion mathildae Audouin & Milne Edwards in Cuvier, 1830
Sigalion squamatum Delle Chiaje, 1830
Sigalion squamosum Delle Chiaje, 1830
Sigalion squamosus Delle Chiaje, 1830
Sigambra constricta (Southern, 1921)
Sigambra parva (Day, 1963)
Sigambra tentaculata (Treadwell, 1941)
Sige fusigera Malmgren, 1865
Sige macroceros (Grube, 1860)
Sige oliveri Pleijel, 1990
Sige olivieri Pleijel, 1990
Silhouetta uvacarpa Millard & Bouillon, 1973
Similomerona nematophora (Antsulevich, 1986)
Simorhynchotus antennarius (Claus, 1871)
Sinonereis heteropoda Wu & Sun, 1979
Siphonochalina balearica Ferrer-Hernandez, 1916
Siphonochalina coriacea Schmidt, 1868
Siphonochalina crassa Topsent, 1925
Siphonochalina expansa Sarà, 1960
Siphonochalina mollis Schmidt, 1870
Siphonodictyon coralliphagum Rützler, 1971
Siphonodictyon infestum (Johnson, 1889)
Siphonodictyon insidiosum (Johnson, 1889)
Siphonodictyon labyrinthicum (Hancock, 1849)
Strongylocentrotus chlorocentrotus Brandt, 1835
Strongylocentrotus droebachiensis (O.F. Müller, 1776)
Strongylocentrotus echinoides A. Agassiz & H.L. Clark, 1907
Strongylocentrotus granularis (Say, 1827 non Lamarck, 1816)
Slabberia simulans (Bouillon, 1965)
Smittoidea perrieri (Jullien, 1882)
Solaster affinis Danielssen & Koren, 1877
Solaster earlli Verrill, 1879
Solaster echinatus Storm, 1888
Solaster endeca (Linnaeus, 1771)
Solaster furcifer Düben & Koren, 1846
Solaster galaxides Verrill, 1909
Solaster glacialis Danielssen & Koren, 1881
Solaster intermedius Sluiter, 1895
Solaster papposus Müller & Troschel, 1842
Solaster squamatus Döderlein, 1900
Solaster syrtensis Verrill, 1894
Solaster tumida Stuxberg, 1878
Solatisonax atkinsoni (E. A. Smith, 1891)
Soleneiscus olynthus (Borojevic & Boury-Esnault, 1987)
Sollasella hystrix (Topsent, 1890)
Sosane sulcata Malmgren, 1866
Sycon humboldti Risso, 1827
Sycon humboldtii (Risso, 1826)
Sycon quadrangulata (Schmidt, 1868)
Sycon quadrangulatum (Schmidt, 1868)
Sycon scaldiense (Van Koolwijk, 1982)
Sycon schmidti (Haeckel, 1872)
Sycon setosum Schmidt, 1862
Sycon tenellum Lendenfeld, 1891
Sycon tuba Lendenfeld, 1891
Syconella quadrangulata Schmidt, 1868
Sycortis lingua Haeckel, 1870
Sycum arcticum Haeckel, 1870
Sycurus oviparus Haeckel, 1870
Sycyssa huxleyi Haeckel, 1870
Syllides articulocirratus Gillandt, 1979
Syllides articulosus Ehlers, 1897
Syllides bansei Perkins, 1981
Sphaerodoropsis parva (Ehlers, 1913)
Sphaerodoropsis philippi (Fauvel, 1911)
Sphaerodoropsis sibuetae Desbruyères, 1980
Sphaerodorum gracilis (Rathke, 1843)
Sphaeronectes bougisi Carré, 1968
Sphaeronectes fragilis Carré, 1968
Sphaeronectes gamulini Carré, 1968
Sphaeronectes gracilis (Claus, 1873)
Sphaeronectes irregularis (Claus, 1873)
Sphaeronectes koellikeri Huxley, 1859
Sphaerosyllis austriaca Banse, 1959
Sphaerosyllis belizensis Russell, 1989
Sphaerosyllis brandhorsti Hartmann-Schröder, 1965
Sphaerosyllis brevicirra Hartmann-Schröder, 1960
Sphaerosyllis bulbosa Southern, 1914
Sphaerosyllis capensis Day, 1953
Sphaerosyllis claparedi Ehlers, 1864
Sphaerosyllis cryptica Ben-Eliahu, 1977
Sphaerosyllis erinaceus Claparède, 1863
Sphaerosyllis giandoi Somaschini & San Martín, 1994
Sphaerosyllis glandulata Perkins, 1981
Sphaerosyllis gravinae Somaschini & San Martín, 1994
Sphaerosyllis hystrix Claparède, 1863
Sphaerosyllis longicauda Webster & Benedict, 1887
Sphaerosyllis longipapillata Hartmann-Schröder, 1979
Sphaerosyllis magnidentata Perkins, 1981
Sphaerosyllis ovigera Langerhans, 1879
Sphaerosyllis papillifera Naville, 1933
Sphaerosyllis parabulbosa San Martín & López, 2002
Sphaerosyllis pirifera Claparède, 1868
Sphaerosyllis piriferopsis Perkins, 1981
Sphaerosyllis taylori Perkins, 1981
Sphaerosyllis tenuicirrata Claparède, 1864
Spongionella repens (Thiele, 1905)
Spongionella zetlandica (Bowerbank, 1866)
Spongosorites annandalei (Ferrer-Hernandez, 1923)
Spongosorites calcicola Picton & Goodwin, 2007
Spongosorites cavernicola Bibiloni, 1993
Spongosorites difficilis (Lundbeck, 1902)
Spongosorites fibrosus (Fristedt, 1887)
Spongosorites flavens Pulitzer-Finali, 1983
Spongosorites genitrix (Schmidt, 1870)
Spongosorites glabra (Topsent, 1898)
Spongosorites intricatus (Topsent, 1892)
Spongosorites placenta Topsent, 1896
Spongosorites topsenti Dendy, 1905
Stauridiosarsia gemmifera (Forbes, 1848)
Stauridiosarsia ophiogaster (Haeckel, 1879)
Stauridiosarsia reesi (Vannucci, 1956)
Stauridiosarsia spongicola (Anger, 1972)
Staurocoryne filiformis Rees, 1936
Staurophora mertensii Brandt, 1838
Steenstrupia nutans (M. Sars, 1835)
Stegohornera arctica (Kluge, 1946)
Stelletta addita (Topsent, 1938)
Stelletta aspera Carter, 1871
Stelletta dorsigera Schmidt, 1864
Stelletta fortis Vosmaer, 1885
Stelletta incrustans (Topsent, 1890)
Stelletta pachastrelloides Carter, 1876
Stelletta rhaphidiophora Hentschel, 1929
Stelletta tuberosa (Topsent, 1892)
Stelletta ventricosa (Topsent, 1904)
Stelletta wageneri Schmidt, 1862
Stellettinopsis euastrum Schmidt, 1868
Stelligera mutila (Topsent, 1928)
Stelligera nux Lendenfeld, 1898
Spirodiscus grimaldii Fauvel, 1909
Spirographis spallanzanii (Viviani, 1805)
Spirorbis borealis Daudin, 1800
Spirorbis corrugatus (Montagu, 1803)
Spirorbis cuneatus Gee, 1964
Spirorbis infundibulum Harris & Knight-Jones, 1964
Spirorbis inornatus L'Hardy & Quievreux, 1962
Spirorbis mendosus Bush, 1910
Spirorbis moerchi Levinsen, 1883
Spirorbis nudus Bush, 1910
Spirorbis ponticus Eichwald in Mörch, 1863
Spirorbis pusilla Rathke, 1837
Spirorbis serratus Bush, 1910
Spirorbis spirillum (Linnaeus, 1758)
Spirorbis tridentatus Levinsen, 1883
Spirorbis (Laeospira) infundibulum Harris & Knight-Jones, 1964
Spirorbis (Laeospira) inornatus L'Hardy & Quievreux, 1962
Spirorbis (Laeospira) medius Pixell, 1912
Spirorbis (Spirorbis) corallinae de Silva, Knight-Jones, 1962
Spirorbis (Spirorbis) cuneatus Gee, 1964
Spirorbis (Spirorbis) infundibulum Harris, Knight-Jones, 1964
Spirorbis (Spirorbis) inornatus L'Hardy, Quievreux, 1962
Spirorbis (Spirorbis) marioni Caullery, Mesnil, 1897
Spirorbis (Spirorbis) rupestris Gee, Knight-Jones, 1962
Spirorbis (Spirorbis) spirorbis (Linnaeus, 1758)
Spirorbis (Spirorbis) tridentatus Levinsen, 1883
Spirorbis (Velorbis) gesae Knight-Jones P., Knight-Jones E.W., 1995
Spongelia avara Schmidt, 1862
Spongelia elastica Schulze, 1879
Spongelia fragilis (Montagu, 1814)
Spongelia incrustans Schmidt, 1862
Spongelia pallescens Schmidt, 1862
Strongylocentrotus pallidus (Sars G.O., 1871)
Strongylocentrotus sachalinicus Clark, 1912
Strongylocentrotus sachalinicus Döderlein, 1906
Stryphnus fortis (Vosmaer, 1885)
Stryphnus mucronatus (Schmidt, 1868)
Stryphnus niger Sollas, 1886
Stygocapitella subterranea Knöllner, 1934
Stylactaria fucicola (M. Sars, 1857)
Stylactaria inermis (Allman, 1872)
Stylactis inermis Allman, 1872
Stylinos fristedti Topsent, 1913
Stylinos jullieni Topsent, 1892
Stylissa cribrosa (Micklucho-Maclay, 1870)
Stylopallene tubirostris Clark, 1963
Stylopus coriaceus Fristedt, 1885
Stylopus odhneri Alander, 1942
Stylopus stylifer Alander, 1942
Stylostichon baffini Brøndsted, 1933
Stylostichon bihamigerum (Waller, 1878)
Stylostichon dendyi (Topsent, 1890)
Stylostichon equiosculatum Pansini, 1987
Stylostichon microcheliferum Cabioch, 1968
Stylostichon microcionides (Carter, 1876)
Stylostichon plumosum (Montagu, 1814)
Stylostichon repens Topsent, 1904
Stylotella heliophila Parker, 1910
Stylotella incisa (Schmidt, 1880)
Stylotella marsilii Topsent, 1893
Stylotella plicata (Schmidt, 1880)
Stylotella (Perisinella) madeirensis Topsent, 1928
Styracaster armatus Sladen, 1883
Styracaster chuni Ludwig, 1907
Styracaster edwardsi Perrier, 1885
Styracaster elongatus Koehler, 1907
Syllides benedicti Banse, 1971
Syllides edentula (Claparède, 1868)
Syllides japonica Imajima, 1966
Syllides japonicus Imajima, 1966
Syllides longocirrata (Örsted, 1845)
Syllidia armata Quatrefages, 1866
Syllidia assimilis (Pryde, 1914)
Sylline brevipes Claparède, 1864
Sylline rubropunctata Grube, 1860
Syllis abyssicola Ehlers, 1874
Syllis aesthetica Saint Joseph, 1887
Syllis alosae San Martín, 1992
Syllis alternata Moore, 1908
Syllis alternosetosa Saint Joseph, 1886
Syllis amica Quatrefages, 1866
Syllis armandi Claparède, 1864
Syllis armillaris (O.F. Müller, 1776)
Syllis armoricana Claparède, 1863
Syllis atlantica Cognetti, 1960
Syllis aurantiaca Claparède, 1868
Syllis aurita Claparède, 1864
Syllis bacilligera Claparède, 1868
Syllis borealis Malmgren, 1867
Syllis bouvieri Gravier, 1900
Syllis brachychaeta Schmarda, 1861
Syllis brachycirris Grube, 1857
Syllis brevicirrata Mc Intosh, 1908
Syllis brevicollis Ehlers, 1874
Syllis brevicornis Grube, 1863
Syllis brevipennis (Grube, 1863)
Syllis buskii Mc Intosh, 1908
Syllis caeca (Katzmann, 1973)
Syllis capensis Mc Intosh, 1885
Syllis ciliata Mecznicow, 1865
Syllis cincinnata Verrill, 1900
Stephanomia orthocanna Kramp, 1942
Stephanomia rubra (Vogt, 1852)
Stephanophyes superba Chun, 1888
Stephanotheca arrogata (Waters, 1879)
Stephanotheca monoecensis (Calvet, 1927)
Stephanotheca ochracea (Hincks, 1862)
Stephanotheca watersi Reverter-Gil, Souto & Fernández-Pulpeiro, 2012
Stereocidaris ingolfiana Mortensen, 1903
Sternaspis fossor Stimpson, 1854
Sternaspis scutata Ranzani, 1817
Sthenelais boa (Johnston, 1833)
Sthenelais ctenolepis Claparède, 1868
Sthenelais jeffreysi McIntosh, 1876
Sthenelais jeffreysii McIntosh, 1876
Sthenelais limicola (Ehlers, 1864)
Sthenelais minor Pruvot & Racovitza, 1895
Sthenelais zetlandica McIntosh, 1876
Sthenolepis yhleni (Malmgren, 1867)
Stichaster arcticus Danielssen & Koren, 1884
Stichaster roseus M. Sars, 1861
Stichaster talismani Perrier, 1885
Stichastrella ambigua (Farran, 1913)
Stichastrella rosea (O.F. Müller, 1776)
Stichopathes abyssicola Roule, 1902
Stichopathes dissimilis Roule, 1902
Stoeba dissimilis (Sarà, 1959)
Stoeba lesinensis (Lendenfeld, 1894)
Stoeba plicata (Schmidt, 1868)
Stomacrustula cruenta (Busk, 1854)
Stomacrustula sinuosa (Busk, 1860)
Stomatopora gingrina Jullien, 1882
Streblosoma bairdi (Malmgren, 1866)
Streblosoma hesslei Day, 1955
Streblosoma intestinale M. Sars in G.O. Sars, 1872
Styracaster horridus Sladen, 1883
Styracaster spinosus Perrier, 1885
Subadyte pellucida (Ehlers, 1864)
Suberites baffini Brøndsted, 1933
Suberites bursa Schmidt, 1862
Suberites caminatus Ridley & Dendy, 1886
Suberites capillitium Topsent, 1892
Suberites carnosus (Johnston, 1842)
Suberites concinnus Lambe, 1895
Suberites crambe Schmidt, 1862
Suberites crelloides Marenzeller, 1886
Suberites crustula (Bowerbank, 1866)
Suberites dianae Schmidt, 1875
Suberites distortus Schmidt, 1870
Suberites elongata Ridley & Dendy, 1886
Suberites elongatus Ridley & Dendy, 1886
Suberites ficus (Johnston, 1842)
Suberites gibbosiceps Topsent, 1904
Suberites glasenappii Merejkowski, 1878
Suberites gracilis Lendenfeld, 1898
Suberites hirsutus (Fleming, 1828)
Suberites hirsutus Topsent, 1927
Suberites hystrix Schmidt, 1868
Suberites laticeps Topsent, 1904
Suberites lobatus (Renier in Lieberkühn, 1859)
Suberites lobatus (Wilson, 1902)
Suberites luetkenii Schmidt, 1870
Suberites maculans (Johnston, 1842)
Suberites massa Nardo, 1847
Suberites montiniger Carter, 1880
Suberites prototypus Czerniavsky, 1880
Suberites rubrus Sole-Cava & Thorpe, 1986
Suberites simplex Lambe, 1893
Suberites stelligera Carter, 1882
Stelligera rigida (Montagu, 1814)
Stelligera stuposa (Ellis & Solander, 1786)
Stellonia webbiana d'Orbigny, 1839
Stelodoryx flabellata Koltun, 1959
Stelodoryx pectinata (Topsent, 1890)
Stelodoryx pluridentata (Lundbeck, 1905)
Stelodoryx procera Topsent, 1904
Stelospongia aspergillum (Schmidt, 1868)
Stenohelia maderensis (Johnston, 1862)
Synapturichthys kleinii (Risso, 1827)
Synelmis albini (Langerhans, 1881)
Synelmis dineti Katzmann, 1974
Synelmis klatti (Friedrich, 1950)
Synmerosyllis lamelligera (Saint-Joseph, 1886)
Synops anceps Vosmaer, 1894
Synops pyriformis Vosmaer, 1882
Tachytrypane jeffreysii McIntosh, 1879
Talochlamys multistriata (Poli, 1795)
Talochlamys pusio (Linnaeus, 1758)
Tanystylum calicirostrum Schimkewitsch, 1890
Tanystylum paramexicanum Müller & Krapp, 2009
Tanystylum tayronae Müller & Krapp, 2009
Tanystylum zuytdorpi Arango, 2009
Terebella ehrenbergi Gravier, 1906
Terebella lapidaria Linnaeus, 1767
Terebella orotavae (Langerhans, 1881)
Terebellides carnea Bobretzky, 1881
Terebellides stroemi [auctt. misspelling]
Terebellides stroemii Sars, 1835
Terpios coerulea (Carter, 1882)
Terpios gelatinosa (Bowerbank, 1866)
Tethea spinosa Bowerbank, 1874
Tethea spinularia Bowerbank, 1866
Tethya gracilis Sarà, Sarà, Nickel & Brümmer, 2001
Syllis cirropunctata Michel, 1909
Syllis clavata Claparède, 1863
Syllis closterobranchia Schmarda, 1861
Syllis columbretensis (Campoy, 1982)
Syllis corallicoloides Augener, 1922
Syllis cornuta Rathke, 1843
Syllis crassicornis Schmarda, 1861
Syllis cruzi Núñez & San Martín, 1991
Syllis cucullata Mc Intosh, 1908
Syllis cunninghami Mc Intosh, 1908
Syllis danica Quatrefages, 1866
Syllis divaricata Keferstein, 1862
Syllis ergeni Çinar, 2005
Syllis exilis Gravier, 1900
Syllis eximia Malm, 1874
Syllis fabricii Malmgren, 1867
Syllis fasciata Malmgren, 1867
Syllis ferrani Alós & San Martín, 1987
Syllis fissipara Krohn, 1852
Syllis fulgurans Audouin & Milne Edwards, 1833
Syllis gerlachi (Hartmann-Schröder, 1960)
Syllis golfonovensis (Hartmann-Schröder, 1962)
Syllis gracilis Grube, 1840
Syllis hamata Claparède, 1868
Syllis hexagonifera Claparède, 1864
Syllis hyalina Grube, 1863
Syllis hyllebergi (Licher, 1999)
Syllis jorgei San Martín & López, 2000
Syllis krohnii Ehlers, 1864
Syllis licheri Ravara, San Martín & Moreira, 2004
Syllis lineata Schmarda, 1861
Syllis longissima Gravier, 1900
Syllis lussinensis Grube, 1863
Syllis macrocola Marenzeller, 1874
Syllis maculosa Milne Edwards, 1845
Sphaerosyllis tetralix Eliason, 1920
Sphaerosyllis xarifae Hartmann-Schröder, 1960
Sphaerosyllis (Prosphaerosyllis) adelae San Martín, 1984
Sphenoporina singularis Breitfuss, 1898
Sphinctrella aberrans Maldonado & Uriz, 1996
Sphinctrella annulata (Schmidt, 1880)
Sphinctrella armata (Hanitsch, 1895)
Sphinctrella cribrifera Sollas, 1886
Sphinctrella gracilis Sollas, 1888
Sphinctrella linaresi Ferrer-Hernandez, 1914
Sphinctrella ornata Sollas, 1888
Tedania anhelans (Vio in Olivi, 1792)
Tedania commixta Ridley & Dendy, 1886
Tedania conuligera Topsent, 1892
Tedania flexistrongyla Koltun, 1959
Tedania fragilis Lambe, 1895
Tedania phacellina Topsent, 1912
Tedania suctoria Schmidt, 1870
Tedania (Tedania) anhelans (Vio in Olivi, 1792)
Tedania (Tedania) commixta Ridley & Dendy, 1886
Tedania (Tedania) flexistrongyla Koltun, 1959
Tedania (Tedania) fragilis Lambe, 1895
Tedania (Tedania) suctoria (Schmidt, 1870)
Tedania (Tedaniopsis) phacellina Topsent, 1912
Tedania (Trachytedania) echinata (Hope, 1889)
Tedaniella cylindrigera Czerniavsky, 1880
Tellina exigua Poli, 1791
Tetrathyrus forcipatus Claus, 1879
Tetys costata
Tetys tilesii
Thalamophyllia gasti (Döderlein, 1913)
Thalassophyes crystallina Moser, 1925
Thalia cicar van Soest, 1973
Thamnostoma russelli Rees, 1939
Tethya hibernica Heim, Nickel, Picton & Brümmer, 2007
Tethya irregularis Sarà & Bavestrello, 1998
Tethya minuta Sarà, Sarà, Nickel & Brümmer, 2001
Tethya wilhelma Sarà, Sarà, Nickel & Brümmer, 2001
Tethyaster subinermis (Philippi, 1837)
Tethyspira spinosa (Bowerbank, 1874)
Tetilla azorica (Topsent, 1913)
Tetilla disigma (Topsent, 1904)
Tetilla infrequens (Carter, 1876)
Tetilla longipilis Topsent, 1904
Tetilla repens (Sarà, 1958)
Tetilla truncata Topsent, 1890
Tetraglene rosea Grube, 1863
Thoosa tortonesei Sarà, 1958
Thoracaster cylindratus Sladen, 1883
Thoracaster magnus Ludwig, 1907
Thoracophelia flabellifera Ziegelmeier, 1955
Thorectandra diversispiculifera Ferrer-Hernandez, 1918
Thrinacophora spissa Topsent, 1892
Thrombus abyssi (Carter, 1873)
Thuiaria arctica (Bonnevie, 1899)
Thuiaria lichenastrum (Linnaeus, 1758)
Thuiaria thuja (Linnaeus, 1758)
Tiaranna globulosa (Forbes, 1848)
Tiaranna rotunda (Quoy & Gaimard, 1827)
Timarete anchylochaeta (Schmarda, 1861)
Timarete dasylophius (Marenzeller, 1879)
Timarete dollfusi (Fauvel, 1928)
Timea crassa (Topsent, 1900)
Timea cumana Pulitzer-Finali, 1978
Timea fasciata Topsent, 1934
Timea hallezi (Topsent, 1894)
Timea irregularis Sarà & Siribelli, 1960
Timea stellifasciata Sarà & Siribelli, 1960
Spongia adriatica Schmidt, 1862
Spongia agaricina Pallas, 1766
Spongia ananas Montagu, 1814
Spongia aurea Montagu, 1814
Spongia cancellata Sowerby, 1806
Spongia cannabina Esper, 1794
Spongia ciliata Fabricius, 1780
Spongia cinerea Grant, 1826
Spongia clavata Esper, 1794
Spongia columbae Walker, 1808
Spongia communis Lamarck, 1814
Spongia complicata Montagu, 1814
Spongia compressa Fabricius, 1780
Spongia conus Montagu, 1814
Spongia coriacea Montagu, 1814
Spongia damicornis Esper, 1794
Spongia fasciculata sensu Esper, 1794
Spongia foliacea Montagu, 1814
Spongia fragilis Montagu, 1814
Spongia fruticosa Montagu, 1814
Spongia hispida Montagu, 1814
Spongia infundibuliformis Linnaeus, 1759
Spongia intestinalis Lamarck, 1814
Spongia irregularis (Lendenfeld, 1889)
Spongia lactuca Esper, 1794
Spongia laevigata Montagu, 1814
Spongia limbata Montagu, 1814
Spongia lobata Montagu, 1814
Spongia mamillaris Müller, 1806
Spongia mollissima Schmidt, 1862
Spongia nitens (Schmidt, 1862)
Spongia oculata sensu Pallas, 1766
Spongia officinalis Linnaeus, 1759
Spongia palmata Ellis & Solander, 1786
Spongia palmata sensu Lamarck, 1814
Spongia panicea Pallas, 1766
Tharyx dorsobranchialis (Kirkegaard, 1959)
Tharyx heterochaeta
Tharyx marioni (Saint-Joseph, 1894)
Tharyx multibranchiis (Grube, 1863)
Tharyx tesselata Hartman, 1960
Tharyx vivipara Christie, 1984
Thecocodium penicillatum Jarms, 1987
Thecophora semisuberites Schmidt, 1870
Thelepus cincinnatus (Fabricius, 1780)
Thelepus setosus (Quatrefages, 1866)
Thelepus triserialis (Grube, 1855)
Thenea abyssorum Koltun, 1964
Therochaeta collarifera (Ehlers, 1887)
Tomopteris apsteini Rosa, 1908
Tomopteris cavalli [auct.]
Tomopteris cavallii Rosa, 1908
Tomopteris elegans Chun, 1887
Tomopteris eschscholtzii Greeff, 1879
Tomopteris helgolandica Greeff, 1879
Tomopteris kefersteini Greeff, 1879
Tomopteris krampi Wesenberg-Lund, 1936
Tomopteris levipes Greeff, 1879
Tomopteris ligulata Rosa, 1908
Tomopteris nationalis Apstein, 1900
Tomopteris nisseni Rosa, 1908
Tomopteris pacifica Izuka, 1914
Tomopteris pediculosa Terio, 1947
Tomopteris pierantonii Terio, 1947
Tomopteris planktonis Apstein, 1900
Tomopteris septentrionalis Steenstrup, 1849
Tomopteris tenuis Caroli, 1932
Tomopteris (Johnstonella) apsteini (Rosa, 1908)
Tomopteris (Johnstonella) biancoi Terio, 1947
Tomopteris (Johnstonella) duccii Rosa, 1908
Tomopteris (Johnstonella) dunckeri Rosa, 1908
Syllis mixtosetosa Bobretzky, 1870
Syllis monilaris (Savigny, 1812)
Syllis moniliformis Savigny, 1822
Syllis navicellidens Czerniavsky, 1881
Syllis nidrosiensis Bidenkap, 1907
Syllis nigrans Bobretzky, 1870
Syllis nigricirris Grube, 1863
Syllis nigropharyngea Day, 1951
Syllis nigropunctata Haswell, 1886
Syllis normannica Claparède, 1863
Syllis oblonga Keferstein, 1862
Syllis ochracea Marenzeller, 1875
Syllis oligochaeta Bobretzky, 1870
Syllis parapari San Martín & López, 2000
Syllis pellucida Ehlers, 1864
Syllis pontica (Czerniavsky, 1881)
Syllis pontxioi San Martín & López, 2000
Syllis prolifera Krohn, 1852
Syllis pulligera Krohn, 1852
Syllis quadridentata Czerniavsky, 1881
Syllis scabra Ehlers, 1864
Syllis schmardiana Haswell, 1886
Syllis setubalensis Mc Intosh, 1885
Syllis simillima Claparède, 1864
Syllis spongicola Grube, 1855
Syllis spongiphila Verrill, 1885
Syllis tigrina Rathke, 1843
Syllis torquata Marion & Bobretzky, 1875
Syllis truncata Haswell, 1920
Syllis tyrrhena (Licher & Kuper, 1998)
Syllis variegata Grube, 1860
Syllis velox Bobretzky, 1870
Syllis vittata Grube, 1840
Syllis vivipara Krohn, 1869
Syllis zebra Grube, 1860
Streblospio benedicti Webster, 1879
Streblospio dekhuyzeni Horst, 1909
Streblospio shrubsoli [auctt.]
Streetsia challengeri Stebbing, 1888
Streetsia porcella (Claus, 1879)
Streptocaulus multiseptatus (Bale, 1915)
Streptodonta pterochaeta (Southern, 1914)
Streptospinigera templadoi (San Martín, 1984)
Streptosyllis arenae Webster & Benedict, 1884
Streptosyllis bidentata Southern, 1914
Streptosyllis campoyi Brito, Núñez & San Martín, 2000
Streptosyllis pettiboneae Perkins, 1981
Streptosyllis varians Webster & Benedict, 1887
Streptosyllis websteri Southern, 1914
Triconia conifera (Giesbrecht, 1891)
Triconia minuta (Giesbrecht, 1893 ["1892"])
Trigonocidaris albida A. Agassiz, 1869
Trilobodrilus axi Westheide, 1967
Trilobodrilus heideri Remane, 1925
Triptolemma intextum (Carter, 1876)
Triptolemma simplex (Sarà, 1959)
Triptolemus simplex Sarà, 1959
Trypanosyllis aeolis Langerhans, 1879
Trypanosyllis coeliaca Claparède, 1868
Trypanosyllis gemmipara Johnson, 1901
Trypanosyllis gigantea (Mc Intosh, 1885)
Trypanosyllis krohnii Claparède, 1864
Trypanosyllis rosea (Grube, 1863)
Trypanosyllis uncinigera Hartmann-Schröder, 1960
Trypanosyllis zebra (Grube, 1860)
Trypanosyllis (Trypanosyllis) coeliaca Claparède, 1868
Tubularia ceratogyne Pérez, 1920
Tubularia cornucopia Bonnevie, 1898
Suberites suberia (Montagu, 1814)
Suberites virgultosus (Johnston, 1842)
Suberotelites demonstrans Topsent, 1890
Sulculeolaria australis (Quoy & Gaimard, 1833)
Sulculeolaria biloba (Sars, 1846)
Sulculeolaria chuni (Lens & van Riemsdijk, 1908)
Sulculeolaria monoica (Chun, 1888)
Sulculeolaria quadrivalvis de Blainville, 1830
Sycaltis glacialis Haeckel, 1870
Sycaltis oviparus Haeckel, 1872
Sycandra aspera Gibson, 1886
Sycettusa glacialis (Haeckel, 1870)
Sycettusa kuekenthali (Breitfuss, 1896)
Sycettusa lanceolata (Breitfuss, 1898)
Sycettusa murmanensis (Breitfuss, 1898)
Sycettusa nitida (Arnesen, 1900)
Sycolepis villosa (Carter, 1871)
Sycon asperum (Gibson, 1886)
Sycon asperum Schmidt, 1862
Trochochaeta multisetosa (Örsted, 1844)
Trochochaeta watsoni (Fauvel, 1916)
Trochocyathus (Trochocyathus) spinosocostatus Zibrowius, 1980
Trochospongilla horrida Weltner, 1893
Tromikosoma koehleri Mortensen, 1903
Tromikosoma uranus (Thomson, 1877)
Turritella communis Risso, 1826
Tylaster willei Danielssen & Koren, 1881
Typhinellus labiatus (de Cristofori & Jan, 1832)
Typhinellus sowerbyi (Broderip, 1833)
Typhloscolex muelleri Busch, 1851
Typosyllis alternata (Moore, 1908)
Typosyllis armillaris (O.F. Müller, 1776)
Typosyllis bouvieri (Gravier, 1900)
Typosyllis brachychaeta (Schmarda, 1861)
Timea stelligera (Carter, 1882)
Timea stellivarians (Carter, 1880)
Timea tristellata (Topsent, 1892)
Timea unistellata (Topsent, 1892)
Typosyllis rosea (Langerhans, 1879)
Typosyllis schulzi Hartmann-Schröder, 1960
Typosyllis torquata (Marion & Bobretzky, 1875)
Typosyllis tortugaensis (Augener, 1924)
Typosyllis tristanensis Day, 1954
Typosyllis truncata (Haswell, 1920)
Typosyllis tyrrhena Licher & Kuper, 1998
Typosyllis variegata (Grube, 1860)
Typosyllis vittata (Grube, 1840)
Typosyllis vivipara (Krohn, 1869)
Typosyllis westheidei (San Martín, 1984)
Typosyllis zonata (Haswell, 1833)
Typosyllis (Langerhansia) ferruginea (Langerhans, 1881)
Typosyllis (Typosyllis) hyalina (Grube, 1863)
Ulosa digitata (Schmidt, 1866)
Ulosa jullieni (Topsent, 1892)
Ulosa stuposa (Esper, 1794)
Ulosa tenellula Pulitzer-Finali, 1983
Ulosa tubulata Pulitzer-Finali, 1983
Umbellisyllis fasciata M. Sars, 1869
Urasterias lincki (Müller & Troschel, 1842)
Urechinus naresianus A. Agassiz, 1879
Urobopyrus processae Richardson, 1904
Uschakovius enigmaticus Laubier & Ramos, 1973
Ute gladiata Borojevic, 1966
Vanadis crystallina Greeff, 1876
Vanadis formosa Claparède, 1870
Vanadis longissima (Levinsen, 1885)
Vanadis tentaculata Langerhans, 1880
Vargula norvegica Baird, 1860
Tomopteris (Johnstonella) helgolandica (Greeff, 1879)
Tomopteris (Johnstonella) levipes (Greeff, 1879)
Tomopteris (Johnstonella) marginata Caroli, 1932
Tomopteris (Johnstonella) pacifica (Izuka, 1914)
Tomopteris (Johnstonella) partenopea Caroli, 1928
Tonna pennata (Mörch, 1853)
Topsentia annandalei (Ferrer-Hernandez, 1923)
Topsentia contorta Sarà, 1961
Topsentia garciae Bibiloni, 1993
Topsentia glabra (Topsent, 1898)
Topsentia pachastrelloides (Topsent, 1892)
Topsentia subtilis (Pulitzer-Finali, 1983)
Topsentia tenuispinosa (Topsent, 1927)
Topsentia topsenti (Lévi & Vacelet, 1958)
Torrea candida (Delle Chiaje, 1841)
Tosia (Plinthaster) compta Verrill, 1899
Tosia (Plinthaster) nitida Verrill, 1899
Trachya hystrix Topsent, 1890
Trachyopsilla glaberrima Burton, 1931
Trachytedania echinata Hope, 1889
Trachyteleia hispida (Bowerbank, 1864)
Trachyteleia stephensi Topsent, 1928
Tragosia barleei (Bowerbank, 1866)
Tragosia flustra Topsent, 1892
Tragosia hirondellei (Topsent, 1890)
Travisia forbesii Johnston, 1840
Travisia gravieri McIntosh, 1908
Travisiopsis lanceolata Southern, 1910
Travisiopsis levinseni Southern, 1910
Travisiopsis lobifera Levinsen, 1885
Tregoubovia penicillatum (Jarms, 1987)
Tremaster laevis H.L. Clark, 1941
Tremaster mirabilis Verrill, 1880
Spongia parasitica Montagu, 1814
Spongia penicillus Montagu, 1814
Spongia perlevis Montagu, 1814
Spongia pilosa Montagu, 1814
Spongia plumosa Montagu, 1814
Spongia quarnerensis Schmidt, 1862
Spongia ramosa Montagu, 1814
Spongia rigida Montagu, 1814
Spongia sanguinea Grant, 1826
Spongia strigilata Lamarck, 1814
Spongia stuposa Ellis & Solander, 1786
Spongia stuposa Esper, 1794
Spongia suberia Montagu, 1814
Spongia tupha Martens, 1824
Spongia urceola Rathke & Vahl, 1806
Spongia velutata Renier, 1807
Spongia ventilabrum Linnaeus, 1767
Spongia verrucosa Esper, 1794
Spongia zimocca Schmidt, 1862
Spongia (Spongia) hispida Lamarck, 1814
Spongia (Spongia) nitens (Schmidt, 1862)
Spongia (Spongia) officinalis Linnaeus, 1759
Spongia (Spongia) virgultosa (Schmidt, 1868)
Spongia (Spongia) zimocca Schmidt, 1862
Spongilla lacustris (Linnaeus, 1759)
Spongilla prespensis Hadzische, 1953
Vitreotubus digeronimoi Zibrowius, 1979
Vogtia glabra Bigelow, 1918
Vogtia pentacantha Kölliker, 1853
Vogtia serrata (Moser, 1925)
Vogtia spinosa Keferstein & Ehlers, 1861
Volzia rovignensis (Volz, 1939)
Vosmaeria crustacea Fristedt, 1885
Vosmaeria laevigata Topsent, 1896
Vosmaeria levigata Topsent, 1896
Vaughanella concinna Gravier, 1915
Vermetus gigas Bivona-Bernardi, 1832
Vermilia rugosa Langerhans, 1884
Vermiliopsis eliasoni Zibrowius, 1970
Vermiliopsis infundibulum (Philippi, 1844)
Vermiliopsis langerhansi Fauvel, 1909
Vermiliopsis monodiscus Zibrowius, 1968
Verongia cavernicola Vacelet, 1959
Verongia zetlandica Bowerbank, 1866
Vibilia armata Bovallius, 1887
Vibilia stebbingi Behning & Woltereck, 1912
Vibilia viatrix Bovallius, 1887
Vibulinus stuposus (Ellis & Solander, 1786)
Vigtorniella ardabilia Wiklund, Glover, Johannessen & Dahlgren, 2009
Vigtorniella zaikai (Kiseleva, 1992)
Vioa hancoccii Schmidt, 1862
Vioa johnstonii Schmidt, 1862
Vioa viridis Schmidt, 1862
Virchowia clavata Langerhans, 1879
Yvesia alecto Topsent, 1898
Yvesia dispar Topsent, 1927
Yvesia fallax Topsent, 1890
Yvesia gracilis Alander, 1942
Yvesia guernei Topsent, 1890
Yvesia hanseni Topsent, 1890
Yvesia linguifera Topsent, 1890
Yvesia mammillata Arnesen, 1903
Yvesia pedunculata Topsent, 1890
Yvesia pertusa Topsent, 1890
Yvesia richardi Topsent, 1890
Yvesia ridleyi Topsent, 1890
Yvesia rosea Topsent, 1892
Zanclea implexa (Alder, 1856)
Zatsepinia rittichae Jirkov, 1986
Zeppelina dentata Monticelli, 1897
Hymenancora conjungens Lundbeck, 1910
Hymenancora duplicata Lundbeck, 1910
Hymenancora interjecta Lundbeck, 1910
Hymenancora orientalis (Koltun, 1959)
Hymenancora pecqueryi (Topsent, 1890)
Hymenancora pectinata (Topsent, 1890)
Hymenancora tenuisclera Lundbeck, 1910
Hymenancora triungulata (Topsent, 1928)
Hymenaster gennaeus H.L. Clark, 1923
Hymenaster giboryi Perrier, 1894
Hymenaster giganteus Sladen, 1891
Hymenaster kieri Downey, 1979
Hymenaster membranaceus Wyville Thomson, 1877
Hymenaster pellucidus Thomson, 1873
Hymenaster perissonotus Fisher, 1910
Hymenaster regalis Verrill, 1895
Hymenaster reticulatus Sibuet, 1976
Hymenaster rex Perrier, 1885
Hymenaster roseus Koehler, 1907
Hymenaster tenuispinus Sibuet, 1976
Hymeniacidon armatura Bowerbank, 1866
Hymeniacidon assimilis (Levinsen, 1887)
Hymeniacidon aurea (Montagu, 1814)
Hymeniacidon bucklandi (Bowerbank, 1858)
Hymeniacidon caruncula Bowerbank, 1858
Hymeniacidon consimilis Bowerbank, 1866
Hymeniacidon crustula Bowerbank, 1866
Hymeniacidon fallax Bowerbank, 1866
Hymeniacidon fasciculata (Fristedt, 1887)
Hymeniacidon floreum Bowerbank, 1866
Hymeniacidon fristedti (Topsent, 1913)
Hymeniacidon gorbunovi (Rezvoj, 1931)
Hymeniacidon heliophila (Parker, 1910)
Hymeniacidon hyalina Ridley & Dendy, 1886
Syllis zonata (Haswell, 1833)
Syllis (Syllides) longocirrata Örsted, 1845
Syllis (Typosyllis) alternata (Moore, 1908)
Syllis (Typosyllis) alternosetosa Saint Joseph, 1886
Syllis (Typosyllis) bouvieri Gravier, 1900
Syllis (Typosyllis) cirropunctata Michel, 1909
Syllis (Typosyllis) compacta Gravier, 1900
Syllis (Typosyllis) corallicola Verrill, 1900
Syllis (Typosyllis) exilis Gravier, 1900
Syllis (Typosyllis) truncata Haswell, 1920
Syllis (Typosyllis) variegata Grube, 1860
Sympagella nux Schmidt, 1870
Haplosyllis depressa chamaeleon Laubier, 1960
Haplosyllis oligochaeta pontica Czerniavsky, 1881
Harmothoe lunulata nigra Alaejos y Sanz, 1905
Helicolenus dactylopterus dactylopterus (Delaroche, 1809)
Henricia fisheri echinata Heding, in Jägerskiöld, 1971
Henricia lisa ingolfi Madsen, 1987
Henricia sanguinolenta miliaris Verrill, 1914
Hesionura coineaui longissima Minichev, 1982
Hippasteria phrygiana phrygiana (Parelius, 1768)
Holanthus expergitus gibbosus (A. Agassiz, 1879)
Lagocephalus lagocephalus lagocephalus (Linnaeus, 1758)
Leptasterias (Leptasterias) muelleri celtica A.M. Clark in Clark & Downey, 1992
Leptasterias (Leptasterias) muelleri muelleri (M. Sars, 1846)
Lestidiops jayakari jayakari (Boulenger, 1889)
Lestidiops jayakari pseudosphyraenoides (Ege, 1918)
Luidia sarsi africana Sladen, 1889
Luidia sarsi sarsi Düben & Koren, in Düben, 1845
Lumbrineris emandibulata mabiti Ramos, 1976
Lumbrineris scopa aequilobata Winsnes, 1981
Leptoclathria haplotoxa Topsent, 1928
Leptognathia arctophylax (Norman & Stebbing, 1886)
Leptognathia uncinata Hansen, 1913
Leptognathia voeringi (Sars G.O., 1877)
Aricidea capensis bansei Laubier & Ramos, 1974
Aricidea fragilis mediterranea Laubier & Ramos, 1974
Aricidea suecica meridionalis Laubier & Ramos, 1974
Aricidea (Allia) suecica meridionalis Laubier & Ramos, 1974
Aricidea (Aricidea) capensis bansei Laubier & Ramos, 1974
Aricidea (Strelzovia) suecica meridionalis Laubier & Ramos, 1974
Asconema fristedti islandiense Tabachnick & Menshenina, 2007
Asconema fristedti nordazoriense Tabachnick & Menshenina, 2007
Asterias laevigata varietas Lamarck, 1816
Asterias rubens violacea O.F. Müller, 1776
Astropecten aranciacus gruveli Koehler, 1911
Astropecten irregularis irregularis (Pennant, 1777)
Astropecten irregularis pentacanthus (Delle Chiaje, 1827)
Autolytus lugens mediterraneus Cognetti, 1953
Auxis rochei rochei (Risso, 1810)
Benthopecten simplex simplex (Perrier, 1881)
Brissopsis atlantica mediterranea Mortensen, 1913
Bursa scrobilator scrobilator (Linnaeus, 1758)
Cabestana cutacea cutacea (Linnaeus, 1767)
Caulleriella bioculata parva Gillandt, 1979
Ceramaster granularis granularis (Retzius, 1783)
Ceramaster grenadensis grenadensis (Perrier, 1881)
Circeis armoricana fragilis Knight-Jones & Knight-Jones, 1977
Circeis armoricana paguri Knight-Jones & Knight-Jones, 1977
Diplecogaster bimaculata bimaculata (Bonnaterre, 1788)
Diplodus cervinus cervinus (Lowe, 1838)
Tretodictyum tubulosum Schulze, 1886
Tricellaria arctica Busk, 1855)
Tricellaria elongata (Smitt, 1868)
Trichobranchus glacialis Malmgren, 1866
Trichobranchus roseus (Malm, 1874)
Trichogypsia villosa Carter, 1871
Trichostemma grimaldii Topsent, 1913
Trichostemma sarsi Ridley & Dendy, 1886
Trichydra oligonema (Kramp, 1955)
Ophelia radiata barquii Fauvel, 1927
Ophelina cylindricaudata minima Hartmann-Schröder, 1974
Ophryotrocha hartmanni medicea Parenti, 1962
Ophryotrocha puerilis siberti (McIntosh, 1885)
Oriopsis alata pectinata Banse, 1957
Pectinaria (Amphictene) auricoma mediterranea Nilsson, 1928
Phormosoma placenta sigsbei A. Agassiz, 1880
Phylo foetida adjimensis (Fauvel, 1924)
Phylo foetida atlantica (Fauvel, 1924)
Phylo foetida imitans (Eisig, 1914)
Phylo foetida ligustica (Orlandi, 1896)
Plectroninia hindei mediterranea Vacelet, 1967
Plutonaster agassizi notatus Sladen, 1889
Porania (Porania) pulvillus pulvillus (O.F. Müller, 1776)
Poraniomorpha (Poraniomorpha) hispida hispida (M. Sars, 1872)
Poraniomorpha (Poraniomorpha) hispida rosea Danielssen & Koren, 1881
Pseudarchaster gracilis gracilis (Sladen, 1889)
Pseudomystides limbata nigrolineata (Rioja, 1925)
Psilaster andromeda andromeda (Müller & Troschel, 1842)
Ridgewayia marki minorcaensis Razouls & Carola, 1996
Salenia hastigera acuminata Mortensen, 1934
Salenia profundi occlusa (Mortensen, 1934)
Salenocidaris hastigera acuminata Mortensen, 1934
Typosyllis caeca (Katzmann, 1973)
Typosyllis cincinnata (Verrill, 1900)
Typosyllis cirromaculata Hartmann-Schröder, 1960
Typosyllis cirropunctata (Michel, 1909)
Typosyllis corallicola (Verrill, 1900)
Typosyllis corallicoloides (Augener, 1922)
Typosyllis cornuta (Rathke, 1843)
Typosyllis cruzi (Núñez & San Martín, 1991)
Typosyllis exilis (Gravier, 1900)
Typosyllis fasciata (Malmgren, 1867)
Typosyllis ferrani (Alós & San Martín, 1987)
Typosyllis garciai (Campoy, 1982)
Typosyllis gerlachi Hartmann-Schröder, 1960
Typosyllis gerundensis Alós & Campoy, 1981
Typosyllis golfonovensis Hartmann-Schröder, 1962
Typosyllis hyalina (Grube, 1863)
Typosyllis kabilica (Ben-Eliahu, 1977)
Typosyllis krohni (Ehlers, 1864)
Typosyllis lutea Hartmann-Schröder, 1960
Typosyllis melanopharyngea (Augener, 1918)
Typosyllis nigrans (Bobretzky, 1870)
Typosyllis nigricirris (Grube, 1863)
Typosyllis nuchalis Hartmann-Schröder, 1960
Typosyllis pectinans (Haswell, 1920)
Typosyllis prolifera (Krohn, 1852)
Typosyllis pulvinata Langerhans, 1881
Halichondria bowerbanki var. stellifera Breton, Girard & Lagardère, 1995
Halichondria forcipis var. bulbosa Carter, 1876
Halichondria longispicula var. jaltensis (Czerniavsky, 1880)
Halichondria longispicula var. suchumica (Czerniavsky, 1880)
Halichondria longispicula var. tahanrohensis (Czerniavsky, 1880)
Halichondria semitubulosa var. pontica (Czerniavsky, 1880)
Vosmaeropsis gardineri Ferrer-Hernandez, 1916
Vulcanella (Annulastrella) ornata (Sollas, 1888)
Vulcanella (Annulastrella) schmidti Maldonado, 2002
Vulcanella (Annulastrella) verrucolosa (Pulitzer-Finali, 1983)
Vulcanella (Vulcanella) aberrans (Maldonado & Uriz, 1996)
Vulcanella (Vulcanella) armata (Hanitsch, 1895)
Vulcanella (Vulcanella) cribrifera (Sollas, 1886)
Vulcanella (Vulcanella) horrida (Schmidt, 1870)
Vulcanella (Vulcanella) linaresi (Ferrer-Hernandez, 1914)
Weberella bursa (Müller, 1806)
Websterinereis glauca (Claparède, 1870)
Weelia cylindrica (Cuvier, 1804)
Wigginsia wigginsi de Laubenfels, 1953
Wilsoniella furcosetosa (Loshamm, 1981)
Xenosyllis scabra (Ehlers, 1864)
Xestospongia friabilis (Topsent, 1892)
Xestospongia magna (Vacelet, 1969)
Xestospongia plana (Topsent, 1892)
Xestospongia variabilis (Topsent, 1892)
Tylosurus acus acus (Lacepède, 1803)
Tylosurus acus imperialis (Rafinesque, 1810)
Typosyllis variegata profunda (Cognetti, 1954)
Antho coriacea var. elegans (Ridley & Dendy, 1887)
Antho involvens var. inconstans (Topsent, 1925)
Asterias mülleri var. islandica Levinsen, 1887
Axinella arctica var. setosa Hentschel, 1929
Axinella arctica var. trichophora Hentschel, 1929
Spongelia incrustans var. adriatica Czerniavsky, 1880
Spongelia incrustans var. suchumensis Czerniavsky, 1880
Spongelia pallescens var. elastica Schulze, 1879
Spongelia pallescens var. pontica Czerniavsky, 1880
Mediaster bairdi bairdi (Verrill, 1882)
Microphthalmus sczelkowii cantabrica Rioja, 1925
Mycale adhaerens fibrosa Koltun, 1958
Mycale papillosa dulkeiti Koltun, 1959
Mycale papillosa papillosa Koltun, 1959
Mycale (Aegogropila) adhaerens fibrosa Koltun, 1958
Mycale (Carmia) papillosa dulkeiti Koltun, 1959
Mycale (Carmia) papillosa papillosa Koltun, 1959
Myxilla incrustans reses (Topsent, 1892)
Nephtys cirrosa longicornis Jakubova, 1930
Nymphon australe caecum Gordon, 1944
Petrosia (Petrosia) intermedia var. dioscuriae (Czerniavsky, 1880)
Petrosia (Petrosia) intermedia var. horhippiana (Czerniavsky, 1880)
Petrosia (Petrosia) intermedia var. similis (Czerniavsky, 1880)
Petrosia (Petrosia) intermedia var. taurica (Czerniavsky, 1880)
Phakellia ventilabrum var. connexiva Ridley & Dendy, 1887
Polymastia mamillaris var. hyperborea Hentschel, 1916
Psammopemma finmarchicum var. spiculosum Hentschel, 1929
Pseudarchaster intermedius var. insignis Verrill, 1895
Psilaster andromeda var. cassiope Grieg, 1907
Reniera aquaeductus var. taurica Czerniavsky, 1880
Reniera inflata var. taurica Czerniavsky, 1880
Dytaster grandis grandis (Verrill, 1884)
Echinaster (Echinaster) sepositus sepositus (Retzius, 1783)
Echinus acutus norvegicus Düben & Koren, 1844
Echinus esculentus glacialis D'yakonov, 1923
Euchone southerni incisa Banse, 1970
Fabricia stellaris adriatica Banse, 1956
Fabricia stellaris caspica Zenkevitch, 1922
Fabricia stellaris stellaris (O. F. Müller, 1774)
Flexopecten glaber glaber (Linnaeus, 1758)
Flexopecten glaber proteus (Dillwyn, 1817)
Gadiculus argenteus argenteus Guichenot, 1850
Gasterosteus aculeatus aculeatus Linnaeus, 1758
Glycera alba adspersa Fauvel, 1939
Glycera convoluta uncinata Rioja, 1918
Gracilechinus acutus norvegicus (Düben & Koren, 1844)
Spongia irregularis var. mollior (sensu Ridley, 1884)
Spongia officinalis var. adriatica Schmidt, 1862
Spongosorites placenta var. rigidior Topsent, 1928
Stichaster roseus var. ambigua Farran, 1913
Stryphnus ponderosus var. rudis Sollas, 1888
Suberites domuncula var. spermatozoon (Schmidt, 1875)
Thrombus abyssi var. niger Topsent, 1904
Timea unistellata var. aspera (Topsent, 1904)
Topsentia pachastrelloides var. microxata Topsent, 1928
Tubularia crocea (Agassiz, 1862)
Turbicellepora incrassata (Lamouroux, 1816)
Desmacella peachii var. groenlandica Fristedt, 1887
Dragmastra normani var. rhaphidiophora (Hentschel, 1929)
Dysidea elegans var. pontica (Czerniavsky, 1880)
Dysidea pallescens var. pontica (Czerniavsky, 1880)
Dytaster exilis var. carinata Sladen, 1889
Echinus esculentus var. glacialis D'yakonov, 1923
Echinus esculentus var. tenuispinus Norman, 1868
Erylus discophorus var. deficiens Topsent, 1927
Erylus euastrum var. aspidodiscus Topsent, 1928
Esperia contareni var. flava Czerniavsky, 1880
Esperia contareni var. pontica Czerniavsky, 1880
Esperia foraminosa var. dura Czerniavsky, 1880
Esperia foraminosa var. pontica Czerniavsky, 1880
Farrea occa var. foliascens Topsent, 1906
Forcepia forcipula var. brunnea (Topsent, 1904)
Freyella spinosa var. abyssicola Perrier, 1894
Gelliodes fayalensis var. minor Topsent, 1928
Geodia megastrella var. laevispina Carter, 1876
Cribrella sanguinolenta f. laevior Michailovskij, 1903
Cribrella sanguinolenta f. scabrior Michailovskij, 1903
Echinaster oculatus f. major Düben & Koren, 1846
Echinaster oculatus f. minor Düben & Koren, 1846
Plocamionida ambigua f. achelata Topsent, 1928
Zeugopterus regius (Bonnaterre, 1788)
Biemna peachii var. peracuta Topsent, 1927
Brissopsis atlantica var. mediterranea Mortensen, 1913
Bubaris vermiculata var. erecta (Carter, 1876)
Calthropella simplex var. durissima Topsent, 1892
Cerbaris curvispiculifer var. geniculatus (Topsent, 1892)
Cladorhiza abyssicola var. corticocancellata Carter, 1876
Clathrina coriacea var. rubra Sarà, 1958
Cribrella oculata var. cylindrella Sladen, 1883
Cribrella oculata var. murina Perrier, 1875
Cribrella sanguinolenta var. abyssicola Norman, 1869
Cribrella sanguinolenta var. curta Norman, 1869
Salenocidaris profundi brevispina (Markov, 1988)
Salenocidaris profundi occlusa Mortensen, 1934
Salenocidaris profundi profundi (Duncan, 1877)
Scoletoma emandibulata mabiti (Ramos, 1976)
Scoloplos (Leodamas) chevalieri canadiensis Harmelin, 1969
Scomberesox saurus saurus (Walbaum, 1792)
Solaster endeca decemradiata Sladen, 1889
Sphaerosyllis erinaceus cryptica Ben-Eliahu, 1977
Spirorbis borealis reversa Mörch, 1863
Spongelia pallescens fragilis (Montagu, 1814)
Stelletta stellata adriatica Sarà, 1960
Stylocordyla borealis typica Burton, 1931
Syllis truncata cryptica Ben-Eliahu, 1977
Syllis variegata profunda Cognetti, 1954
Syllis (Typosyllis) alternata kabilica Ben-Eliahu, 1977
Syllis (Typosyllis) truncata cryptica Ben-Eliahu, 1977
Tanystylum isthmiacum difficile Stock, 1966
Hymeniacidon iberica (Ferrer-Hernandez, 1923)
Hymeniacidon informis (Burton, 1930)
Hymeniacidon jecusculum Bowerbank, 1866
Hymeniacidon lactea Bowerbank, 1866
Amphictene auricoma mediterranea (Nilsson, 1928)
Amphitrite cirrata profunda Fauvel, 1909
Apletodon dentatus dentatus (Facciolà, 1887)
Aponuphis bilineata grubii (Marenzeller, 1886)
Mycale contareni var. flava (Czerniavsky, 1880)
Mycale contareni var. pontica (Czerniavsky, 1880)
Mycale foraminosa var. dura (Czerniavsky, 1880)
Mycale foraminosa var. pontica (Czerniavsky, 1880)
Myxilla fimbriata var. flexitornota Rezvoi, 1925
Myxilla incrustans var. viscosa (Topsent, 1892)
Myxilla mariana var. polysigma Topsent, 1904
Myxilla (Ectyomyxilla) mariana var. polysigma Topsent, 1904
Myxilla (Myxilla) incrustans var. viscosa (Topsent, 1892)
Haliclona inflata var. taurica (Czerniavsky, 1880)
Haliclona (Halichoclona) fistulosa var. latens (Topsent, 1892)
Haliclona (Reniera) aquaeductus var. taurica (Czerniavsky, 1880)
Halicnemia constellata var. azorica Topsent, 1904
Hamacantha implicans var. azorica Topsent, 1904
Hamacantha johnsoni var. complanata Topsent, 1892
Hamacantha johnsoni var. inelegans Topsent, 1892
Hircinia variabilis var. fistulata Szymanski, 1904
Hyalonema thomsoni var. exiguum Schulze, 1887
Hymedesmia gracilisigma var. rissoi Topsent, 1936
Hymedesmia mutabilis var. costata Topsent, 1928
Hymedesmia (Hymedesmia) mutabilis var. costata Topsent, 1928
Iophon frigidum var. gracile Hentschel, 1929
Iophon frigidus var. gracilis Hentschel, 1929
Jaspis johnstoni var. incrustans Topsent, 1904
Leptasterias floccosa var. crassa Heding, 1935
Leptasterias hyperborea var. intermedia Heding, 1935
Leucopsacus scoliodocus var. retroscissus Topsent, 1904
Leucosolenia lacunosa var. hillieri Carter, 1884
Lissodendoryx isodictyalis var. paucispinosa Topsent, 1928
Lissodendoryx (Lissodendoryx) isodictyalis var. paucispinosa Topsent, 1928

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