Between brackets is the number of accepted marine extant species
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Shows the number of accepted marine extant species within the taxon
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- Biota (247 559)
- Kingdom Animalia (211 523)
- Subkingdom Animalia incertae sedis
- Subkingdom Metazoa accepted as Animalia
- Phylum Acanthocephala (516)
- Phylum Annelida (14 107)
- Phylum Arthropoda (59 755)
- Subphylum Arthropoda incertae sedis (1)
- Subphylum Chelicerata (3 065)
- Subphylum Crustacea (56 607)
- Superclass Allotriocarida (1 851)
- Superclass Multicrustacea (47 800)
- Class Copepoda (11 686)
- Class Hexanauplia accepted as Thecostraca
- Class Malacostraca (34 231)
- Subclass Eumalacostraca (33 661)
- Superorder Eucarida (14 180)
- Superorder Peracarida (19 477)
- Order Amphipoda (8 449)
- Order Anisopoda accepted as Tanaidacea
- Order Bochusacea (5)
- Order Cumacea (1 770)
- Order Ingolfiellida (33)
- Order Isopoda (6 316)
- Order Lophogastrida (53)
- Order Mictacea (1)
- Order Mysida (1 215)
- Family Mysidae Haworth, 1825 (1 171)
- Subfamily Boreomysinae Holt & Tattersall, 1905 (40)
- Subfamily Erythropinae Hansen, 1910 (263)
- Subfamily Gastrosaccinae Norman, 1892 (98)
- Subfamily Heteromysinae Norman, 1892 (148)
- Subfamily Leptomysinae Czerniavsky, 1882 (172)
- Tribe Afromysini Wittmann, Ariani & Lagardère, 2014 (79)
- Tribe Leptomysini Czerniavsky, 1882 (19)
- Tribe Mysidopsini Wittmann, Ariani & Lagardère, 2014 (74)
- Genus Americamysis Price, Heard & Stuck, 1994 (6)
- Genus Brasilomysis Bacescu, 1968 (2)
- Genus Cubanomysis Bacescu, 1968 (3)
- Genus Metamysidopsis W.M. Tattersall, 1951 (10)
- Genus Mysidopsis G.O. Sars, 1864 (53)
- Species Mysidopsis abbreviata Wittmann & Griffiths, 2018
- Species Mysidopsis acuta Hansen, 1913
- Species Mysidopsis almyra Bowman, 1964 accepted as Americamysis almyra (Bowman, 1964)
- Species Mysidopsis angusta G.O. Sars, 1864
- Species Mysidopsis ankeli Brattegard, 1973
- Species Mysidopsis arenosa Brattegard, 1974
- Species Mysidopsis badius Modlin, 1987
- Species Mysidopsis bahia Molenock, 1969 accepted as Americamysis bahia (Molenock, 1969)
- Species Mysidopsis bigelowi W. Tattersall, 1926 accepted as Americamysis bigelowi (W. Tattersall, 1926)
- Species Mysidopsis bispinosa O. Tattersall, 1969
- Species Mysidopsis bispinulata Brattegard, 1974
- Species Mysidopsis brattegardi Bacescu & Gleye, 1979 accepted as Mysidopsis brattegarti Bacescu & Gleye, 1979
- Species Mysidopsis brattegarti Bacescu & Gleye, 1979
- Species Mysidopsis brattstroemi Brattegard, 1969
- Species Mysidopsis buffaloensis Wooldridge, 1988
- Species Mysidopsis cachuchoensis San Vicente, Frutos & Sorbe, 2012
- Species Mysidopsis californica W. Tattersall, 1932
- Species Mysidopsis camelina O. Tattersall, 1955
- Species Mysidopsis canariensis Wittmann, 2024
- Species Mysidopsis cathengelae Gleye, 1982
- Species Mysidopsis coelhoi Bacescu, 1968
- Species Mysidopsis cojimarensis Ortiz & Lalana, 1993 accepted as Parvimysis bahamensis Brattegard, 1969
- Species Mysidopsis coralicola Bacescu, 1975
- Species Mysidopsis cultrata Brattegard, 1973
- Species Mysidopsis didelphys (Norman, 1863)
- Species Mysidopsis eclipes Brattegard, 1969
- Species Mysidopsis elongata Holmes, 1900 accepted as Metamysidopsis elongata (Holmes, 1900)
- Species Mysidopsis eremita O. Tattersall, 1962
- Species Mysidopsis furca Bowman, 1957
- Species Mysidopsis gemina Price, Heard & Vargas, 2019
- Species Mysidopsis gibbosa G.O. Sars, 1864
- Species Mysidopsis hellvillensis Nouvel, 1964
- Species Mysidopsis hibernica Norman, 1892 accepted as Mysideis insignis (G.O. Sars, 1864)
- Species Mysidopsis hispida Norman, 1869 accepted as Leptomysis gracilis (G.O. Sars, 1864)
- Species Mysidopsis iluroensis San Vicente, 2013
- Species Mysidopsis incisa G.O. Sars, 1883 accepted as Australomysis incisa (G.O. Sars, 1883)
- Species Mysidopsis indica W. Tattersall, 1922
- Species Mysidopsis inermis Coifmann, 1937 accepted as Brasilomysis inermis (Coifmann, 1937)
- Species Mysidopsis intii Holmquist, 1957
- Species Mysidopsis japonica Ii, 1964
- Species Mysidopsis jenseni Price, 2024
- Species Mysidopsis juniae da Silva, 1979
- Species Mysidopsis kempi W. Tattersall, 1922
- Species Mysidopsis kenyana Bacescu & Vasilescu, 1973
- Species Mysidopsis lata Bravo & Murano, 1996
- Species Mysidopsis major (Zimmer, 1912)
- Species Mysidopsis mathewsoni Brattegard, 1969
- Species Mysidopsis mauchlinei Brattegard, 1974
- Species Mysidopsis mortenseni W. Tattersall, 1951
- Species Mysidopsis munda Zimmer, 1918 accepted as Metamysidopsis munda (Zimmer, 1918)
- Species Mysidopsis onofrensis Bacescu & Gleye, 1979
- Species Mysidopsis pacifica Zimmer, 1918 accepted as Metamysidopsis pacifica (Zimmer, 1918)
- Species Mysidopsis rionegrensis Hoffmeyer, 1993
- Species Mysidopsis robusta Brattegard, 1974
- Species Mysidopsis robustispina Brattegard, 1969
- Species Mysidopsis sankarankuttyi Bacescu, 1984
- Species Mysidopsis schultzei (Zimmer, 1912)
- Species Mysidopsis scintilae dos Reis & da Silva, 1987
- Species Mysidopsis similis (Zimmer, 1912)
- Species Mysidopsis suedafricana O. Tattersall, 1969 accepted as Mysidopsis suedafrikana O. Tattersall, 1969
- Species Mysidopsis suedafrikana O. Tattersall, 1969
- Species Mysidopsis surugae Murano, 1970
- Species Mysidopsis taironana Brattegard, 1973 accepted as Americamysis taironana (Brattegard, 1973)
- Species Mysidopsis tortonesei Bacescu, 1968
- Species Mysidopsis tortonesi Bacescu, 1968 accepted as Mysidopsis tortonesei Bacescu, 1968
- Species Mysidopsis velifera Brattegard, 1973
- Species Mysidopsis virgulata Brattegard, 1974
- Species Mysidopsis zsilaveczi Wittmann & Griffiths, 2014
- Genus Nysidopsis G.O. Sars, 1864 accepted as Mysidopsis G.O. Sars, 1864
- Genus Uromysis Hansen, 1910 accepted as Promysis Dana, 1850
- Subfamily Mysidellinae Czerniavsky, 1882 (19)
- Subfamily Mysinae Haworth, 1825 (310)
- Subfamily Palaumysinae Wittmann, 2013 (5)
- Subfamily Rhopalophthalminae Hansen, 1910 (25)
- Subfamily Siriellinae Czerniavsky, 1882 (91)
- Family Petalophthalmidae Czerniavsky, 1882 (44)
- Order Mysidacea accepted as Mysida
- Order Stygiomysida (10)
- Order Tanaidacea (1 587)
- Order Thermosbaenacea (38)
- Superorder Syncarida (4)
- Subclass Hoplocarida (503)
- Subclass Phyllocarida (67)
- Class Tantulocarida (39)
- Class Thecostraca (1 844)
- Superclass Oligostraca (6 956)
- Class Maxillopoda
- Subphylum Myriapoda (82)
- Subphylum Pancrustacea accepted as Crustacea
- Subphylum Tetraconata accepted as Crustacea
- Phylum Aschelminthes
- Phylum Brachiopoda (408)
- Phylum Bryozoa (6 533)
- Phylum Cephalorhyncha
- Phylum Chaetognatha (132)
- Phylum Chordata (24 096)
- Phylum Cnidaria (12 578)
- Phylum Ctenophora (184)
- Phylum Cycliophora (2)
- Phylum Dicyemida (122)
- Phylum Echinodermata (7 646)
- Phylum Ectoprocta accepted as Bryozoa
- Phylum Entoprocta (202)
- Phylum Gastrotricha (523)
- Phylum Gnathostomulida (100)
- Phylum Hemichordata (137)
- Phylum Kinorhyncha (348)
- Phylum Loricifera (46)
- Phylum Mesozoa accepted as Dicyemida
- Phylum Mollusca (52 044)
- Phylum Nematoda (6 758)
- Phylum Nematomorpha (5)
- Phylum Nemertea (1 334)
- Phylum Nemertina represented as Nemertea
- Phylum Nemertini accepted as Nemertea
- Phylum Orthonectida (24)
- Phylum Pentastomida accepted as Pentastomida
- Phylum Phoronida (13)
- Phylum Placozoa (4)
- Phylum Platyhelminthes (13 497)
- Phylum Pogonophora accepted as Siboglinidae Caullery, 1914
- Phylum Porifera (9 468)
- Phylum Priapulida (22)
- Phylum Rotatoria accepted as Rotifera
- Phylum Rotifera (219)
- Phylum Sipunculida accepted as Sipuncula
- Phylum Tardigrada (263)
- Phylum Xenacoelomorpha (437)
- Kingdom Archaea (117)
- Kingdom Bacteria (2 223)
- Kingdom Chromista (20 791)
- Kingdom Fungi (1 432)
- Kingdom Monera represented as Bacteria
- Kingdom Plantae (10 581)
- Kingdom Protozoa (766)
- Kingdom Viruses (115)
