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)
- Kingdom Archaea (1)
- Kingdom Bacteria (310)
- Kingdom Chromista (956)
- Kingdom Fungi (740)
- Kingdom Plantae (822)
- Kingdom Protozoa (65)
- Subkingdom Biciliata
- Subkingdom Eozoa (9)
- Subkingdom Protozoa incertae sedis
- Subkingdom Sarcomastigota (55)
- Phylum Amoebozoa (17)
- Phylum Apusozoa
- Phylum Choanozoa (37)
- Subphylum Choanofila (35)
- Class Choanoflagellatea (35)
- Order Acanthoecida (32)
- Family Acanthoecaceae
- Family Acanthoecidae Norris, 1965 (30)
- Subfamily Acanthoecidae [Nudiform] (4)
- Subfamily Acanthoecidae [Tectiform] (24)
- Genus Acanthocorbis S.Hara & E.Takahashi, 1984 (3)
- Genus Cosmoeca Thomsen, 1984 (3)
- Genus Crinolina H.A.Thomsen, 1976 (1)
- Species Crinolina aperta (Leadbeater) Thomsen, 1976
- Genus Diaphanoeca W.Ellis, 1930 (4)
- Genus Parvicorbicula Deflandre, 1960 (3)
- Genus Pleurasiga J.Schiller, 1925 (3)
- Genus Polyfibula Manton & Bremer, 1981 (1)
- Genus Saepicula Leadbeater, 1980 (1)
- Genus Spiraloecion (1)
- Genus Stephanoeca W.Ellis, 1930 (4)
- Genus Acanthoecopsis Norris, 1965 (1)
- Genus Kakoeca (1)
- Family Stephanoecidae Leadbeater, 2011 (2)
- Order Craspedida (3)
- Class Filasterea
- Subphylum Cristidiscoidia (2)
- Phylum Sulcozoa (1)
- Subkingdom Stramenopila accepted as Chromista
- Phylum Chrysomonada accepted as Heterokontophyta
- Phylum Dinomastigota accepted as Dinophyta
- Phylum Dinophyta accepted as Dinophyceae
- Phylum Discomitochondria
- Phylum Granuloreticulosa accepted as Foraminifera
- Phylum Haptomonada accepted as Haptophyta
- Phylum Phaeophyta accepted as Phaeophyceae
- Phylum Rhizopoda
- Phylum Sarcomastigophora
- Phylum Spironematellophyta (1)
