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)
- 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)
- Subphylum Asterozoa (412)
- Class Asteroidea (290)
- Subclass Ambuloasteroidea (290)
- Infraclass Neoasteroidea (290)
- Superorder Forcipulatacea (95)
- Superorder Spinulosacea (20)
- Superorder Valvatacea (138)
- Order Notomyotida
- Order Paxillosida (53)
- Order Valvatida (85)
- Family Anseropodidae Fisher, 1906 accepted as Asterinidae Gray, 1840
- Family Archasteridae Viguier, 1879
- Genus Archaster Müller & Troschel, 1840
- Species Archaster excavatus Wyville Thomson, 1878 accepted as Leptychaster kerguelenensis E. A. Smith, 1876
- Family Asterinidae Gray, 1840 (26)
- Family Ganeriidae Sladen, 1889 accepted as Ganeriinae Sladen, 1889
- Family Goniasteridae Forbes, 1841 (25)
- Family Leilasteridae Jangoux & Aziz, 1988 (1)
- Family Odontasteridae Verrill, 1899 (15)
- Family Ophidiasteridae Verrill, 1870 (1)
- Family Poraniidae Perrier, 1894 (4)
- Family Solasteridae Viguier, 1878 (13)
- Order Velatida (37)
- Class Ophiuroidea (122)
- Class Stelleroidea accepted as Asterozoa
- Subphylum Crinozoa (48)
- Subphylum Echinozoa (178)
- 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)
