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 (12 687)
- 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)
- 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)
- Class Eutardigrada (65)
- Order Apochela (4)
- Order Parachela (61)
- Superfamily Eohypsibioidea Bertolani & Kristensen, 1987 in Marley et al., 2011 (1)
- Superfamily Hypsibioidea Pilato, 1969 in Marley et al., 2011 (35)
- Family Hypsibiidae Pilato, 1969 (25)
- Subfamily Diphasconinae Dastych, 1992 (13)
- Subfamily Hypsibiinae Pilato, 1969 (5)
- Subfamily Itaquasconinae Bartoš in Rudescu, 1964 (3)
- Genus Acutuncus Pilato & Binda, 1997 (1)
- Genus Mixibius Pilato, 1992 (2)
- Genus Notahypsibius Tumanov, 2020 (1)
- Family Microhypsibiidae Pilato, 1998
- Family Ramazzottiidae Sands, McInnes, Marley, Goodall-Copestake, Convey & Linse, 2008 (10)
- Superfamily Isohypsibioidea Sands, McInnes, Marley, Goodall-Copestake, Convey & Linse, 2008 (3)
- Superfamily Macrobiotoidea Thulin, 1928 in Marley et al., 2011 (20)
- Family Doryphoribiidae Gąsiorek, Stec, Morek & Michalczyk, 2019 (2)
- Class Heterotardigrada (15)
- Kingdom Archaea (1)
- Kingdom Bacteria (310)
- Kingdom Chromista (956)
- Kingdom Fungi (740)
- Kingdom Plantae (822)
- Kingdom Protozoa (65)
