Between brackets is the number of accepted extant species
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Shows the number of accepted extant species within the taxon
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- Biota (12 687)
- Kingdom Animalia (9 793)
- Phylum Acanthocephala (30)
- Phylum Annelida (618)
- Phylum Arthropoda (4 266)
- Subphylum Chelicerata (489)
- Subphylum Crustacea (3 773)
- Superclass Allotriocarida (977)
- Superclass Multicrustacea (2 340)
- Class Copepoda (553)
- Class Hexanauplia accepted as Thecostraca
- Class Malacostraca (1 740)
- Subclass Eumalacostraca (1 732)
- Superorder Eucarida (72)
- Superorder Peracarida (1 660)
- Order Amphipoda (962)
- Suborder Amphilochidea (593)
- Infraorder Amphilochida (284)
- Infraorder Lysianassida (309)
- Parvorder Haustoriidira (55)
- Parvorder Lysianassidira (187)
- Superfamily Alicelloidea Lowry & De Broyer, 2008 (2)
- Superfamily Aristioidea Lowry & Stoddart, 1997 (39)
- Superfamily Lysianassoidea Dana, 1849 (122)
- Family Adeliellidae Lowry & Myers, 2017 (2)
- Family Amaryllididae Lowry & Stoddart, 2002 (3)
- Family Cebocaridae Lowry & Stoddart, 2011 (1)
- Family Cyclocaridae Lowry & Stoddart, 2011
- Family Cyphocarididae Lowry & Stoddart, 1997 (3)
- Family Eurytheneidae Stoddart & Lowry, 2004 (3)
- Family Hirondelleidae Lowry & Stoddart, 2010 (1)
- Family Lysianassidae Dana, 1849 (15)
- Family Lysianassoidea incertae sedis (7)
- Family Opisidae Lowry & Stoddart, 1995 (1)
- Family Scopelocheiridae Lowry & Stoddart, 1997 (3)
- Family Tryphosidae Lowry & Stoddart, 1997 (64)
- Genus Allogaussia Schellenberg, 1926 (3)
- Genus Cheirimedon Stebbing, 1888 (3)
- Genus Claudedebeella Thurston & Horton, 2020 (1)
- Genus Falklandia De Broyer, 1985 accepted as Claudedebeella Thurston & Horton, 2020
- Genus Hippomedon Boeck, 1871 (5)
- Genus Lepidepecreoides K.H. Barnard, 1931 (1)
- Genus Lepidepecreum Spence Bate & Westwood, 1868 (4)
- Genus Lysianella G.O. Sars, 1883 (1)
- Genus Orchomene Boeck, 1871
- Genus Orchomenella Sars, 1890 (17)
- Subgenus Orchomenella (Orchomenella) (G.O. Sars, 1890) represented as Orchomenella Sars, 1890
- Subgenus Orchomenella (Orchomenopsis) (G.O. Sars, 1891) represented as Orchomenella Sars, 1890
- Species Orchomenella aahu (Lowry & Stoddart, 1983)
- Species Orchomenella acanthura (Schellenberg, 1931)
- Species Orchomenella cavimanus (Stebbing, 1888)
- Species Orchomenella chelipes Walker, 1906
- Species Orchomenella chilensis (Heller, 1865)
- Species Orchomenella denticulata Rauschert, 1995
- Species Orchomenella franklini Walker, 1903
- Species Orchomenella goniops (Walker, 1906)
- Species Orchomenella guillei De Broyer, 1985
- Species Orchomenella hiata (Andres, 1983)
- Species Orchomenella hureaui (De Broyer, 1973)
- Species Orchomenella kryptopinguides (Andres, 1983)
- Species Orchomenella macrophthalma (Birstein & M. Vinogradov, 1962)
- Species Orchomenella pinguides Walker, 1903
- Species Orchomenella rotundifrons K.H. Barnard, 1932
- Species Orchomenella ultima (Bellan-Santini, 1972)
- Species Orchomenella zschaui (Pfeffer, 1888)
- Genus Orchomenyx De Broyer, 1984 (3)
- Genus Paracentromedon Chevreux & Fage, 1925 (2)
- Genus Paralysianopsis Schellenberg, 1931 (1)
- Genus Pseudokoroga Schellenberg, 1931 (2)
- Genus Pseudonesimoides Bellan-Santini & Ledoyer, 1974 (1)
- Genus Pseudorchomene Schellenberg, 1926 (5)
- Genus Stephensenia Schellenberg, 1928 (1)
- Genus Tasmanosa Lowry & Kilgallen, 2014 (1)
- Genus Tryphosella Bonnier, 1893 (10)
- Genus Tryphosidae incertae sedis (2)
- Genus Tryphosites G.O. Sars, 1891 (1)
- Genus Tryphosoides Schellenberg, 1931 accepted as Cheirimedon Stebbing, 1888
- Family Uristidae Hurley, 1963 (19)
- Superfamily Stegocephaloidea Dana, 1852 (24)
- Parvorder Synopiidira (67)
- Suborder Amphipoda incertae sedis (2)
- Suborder Caprellidea accepted as Caprelloidea Leach, 1814
- Suborder Colomastigidea (7)
- Suborder Corophiidea accepted as Corophiida
- Suborder Gammaridea
- Suborder Hyperiidea (95)
- Suborder Hyperiopsidea (2)
- Suborder Senticaudata (263)
- Order Cumacea (92)
- Order Isopoda (403)
- Order Lophogastrida (8)
- Order Mysida (56)
- Order Mysidacea accepted as Mysida
- Order Tanaidacea (139)
- Subclass Phyllocarida (8)
- Class Tantulocarida (1)
- Class Thecostraca (46)
- Superclass Oligostraca (456)
- Class Maxillopoda
- Subphylum Myriapoda (4)
- Phylum Brachiopoda (64)
- Phylum Bryozoa (363)
- Phylum Cephalorhyncha
- Phylum Chaetognatha (25)
- Phylum Chordata (1 415)
- Phylum Cnidaria (460)
- Phylum Ctenophora (11)
- Phylum Dicyemida (1)
- Phylum Echinodermata (638)
- Phylum Ectoprocta accepted as Bryozoa
- Phylum Entoprocta
- Phylum Gastrotricha (1)
- Phylum Gnathostomulida
- Phylum Hemichordata (6)
- Phylum Kinorhyncha (9)
- Phylum Loricifera
- Phylum Mesozoa accepted as Dicyemida
- Phylum Mollusca (753)
- Phylum Nematoda (396)
- Phylum Nemertea (75)
- Phylum Nemertina represented as Nemertea
- Phylum Platyhelminthes (134)
- Phylum Pogonophora accepted as Siboglinidae Caullery, 1914
- Phylum Porifera (281)
- Phylum Priapulida (4)
- Phylum Rotifera (163)
- Phylum Tardigrada (80)
- Kingdom Archaea (1)
- Kingdom Bacteria (310)
- Kingdom Chromista (956)
- Kingdom Fungi (740)
- Kingdom Plantae (822)
- Kingdom Protozoa (65)
