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)
- 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)
- Class Chromadorea (234)
- Subclass Chromadoria (234)
- Order Aphelenchida accepted as Aphelenchoidea Fuchs, 1937
- Order Araeolaimida (33)
- Superfamily Axonolaimoidea Filipjev, 1918 (33)
- Family Axonolaimidae Filipjev, 1918 (2)
- Family Comesomatidae Filipjev, 1918 (24)
- Subfamily Comesomatinae Filipjev, 1918 (2)
- Subfamily Sabatieriinae Filipjev, 1934 (20)
- Genus Actarjania Hopper, 1967 accepted as Sabatieria de Rouville, 1903
- Genus Parasabatieria de Man, 1907 accepted as Sabatieria de Rouville, 1903
- Genus Sabatieria de Rouville, 1903 (20)
- Species Sabatieria antarctica Cobb, 1914 accepted as Sabatieria mawsoni (Cobb, 1914) Wieser, 1954
- Species Sabatieria arcuata Wieser, 1954
- Species Sabatieria australis Allgén, 1929
- Species Sabatieria celtica Southern, 1914
- Species Sabatieria coomansi Chen, 1999
- Species Sabatieria curvispiculum (Allgén, 1959) accepted as Paracomesoma curvispiculum (Allgén, 1959) Jensen, 1979
- Species Sabatieria dorylaimopsoides Allgén, 1959
- Species Sabatieria falcifera Wieser, 1954
- Species Sabatieria furcillata Wieser, 1954
- Species Sabatieria heterospiculum Allgén, 1953
- Species Sabatieria kelletti Platt, 1983
- Species Sabatieria lawsi Platt, 1983
- Species Sabatieria longicaudata Filipjev, 1922
- Species Sabatieria mawsoni (Cobb, 1914) Wieser, 1954
- Species Sabatieria mortenseni (Ditlevsen, 1921) Filipjev, 1922
- Species Sabatieria ornata (Ditlevsen, 1918) Filipjev, 1922
- Species Sabatieria pellucida Allgén, 1959
- Species Sabatieria praedatrix de Man, 1907
- Species Sabatieria rotundicauda Allgén, 1959
- Species Sabatieria splendens (Hopper, 1967)
- Species Sabatieria tenuicaudata (Bastian, 1865) Rouville, 1905
- Species Sabatieria tenuiseta Allgén, 1959
- Species Sabatieria tenuispiculum Ditlevsen, 1921 accepted as Comesoma tenuispiculum (Ditlevsen, 1921)
- Species Sabatieria tubilaima Allgén, 1959
- Genus Grahamius Gerlach & Riemann, 1973 (1)
- Genus Ungulilaimus Allgén, 1958 (1)
- Family Diplopeltidae Filipjev, 1918 (7)
- Order Ascaridida accepted as Ascaridomorpha
- Order Chromadorida (44)
- Order Desmodorida (43)
- Order Desmoscolecida (20)
- Order Monhysterida (28)
- Order Plectida (17)
- Order Rhabditida (49)
- Order Spirurida accepted as Rhabditida
- Order Strongylida accepted as Rhabditida
- Order Tylenchida accepted as Tylenchomorpha
- Class Enoplea (162)
- Class Secernentea
- 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)
