Between brackets is the number of accepted extant species
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Shows the number of accepted extant species within the taxon
The last expanded taxon is highlighted
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- Biota (12 686)
- Kingdom Animalia (9 792)
- Phylum Acanthocephala (30)
- Phylum Annelida (618)
- Phylum Arthropoda (4 265)
- Subphylum Chelicerata (489)
- Subphylum Crustacea (3 772)
- Superclass Allotriocarida (977)
- Superclass Multicrustacea (2 339)
- Class Copepoda (552)
- 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)
- 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)
- Infraorder Physocephalata (61)
- Parvorder Physocephalatidira (61)
- Superfamily Cystisomatoidea Willemöes-Suhm, 1875 represented as Phronimoidea Rafinesque, 1815
- Superfamily Lycaeopsoidea Chevreux, 1913 represented as Platysceloidea Spence Bate, 1863
- Superfamily Phronimoidea Rafinesque, 1815 (31)
- Family Cystisomatidae Willemöes-Suhm, 1875 (2)
- Family Dairellidae Bovallius, 1887 (1)
- Family Hyperiidae Dana, 1852 (14)
- Family Lestrigonidae Zeidler, 2004 (3)
- Family Phronimidae Rafinesque, 1815 (8)
- Family Phrosinidae Dana, 1852 (3)
- Genus Anchylomera H. Milne Edwards, 1830 (1)
- Species Anchylomera blossevillei H. Milne Edwards, 1830
- Genus Phrosina Risso, 1822 (1)
- Genus Primno Guérin-Méneville, 1836 (1)
- Superfamily Platysceloidea Spence Bate, 1863 (17)
- Superfamily Vibilioidea Dana, 1852 (13)
- Infraorder Physosomata (34)
- 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)
