Between brackets is the number of accepted marine extant species
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Shows the number of accepted marine extant species within the taxon
The last expanded taxon is highlighted
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- Biota (247 559)
- Kingdom Animalia (211 524)
- Kingdom Archaea (117)
- Kingdom Bacteria (2 223)
- Kingdom Chromista (20 790)
- Subkingdom Chromista incertae sedis (5)
- Subkingdom Chromobiota
- Subkingdom Cryptista accepted as Cryptophyta
- Subkingdom Hacrobia (568)
- Subkingdom Harosa (18 422)
- Infrakingdom Alveolata (5 969)
- Phylum Ciliophora (2 677)
- Subphylum Intramacronucleata (2 369)
- Infraphylum Intramacronucleata incertae sedis (25)
- Infraphylum Rhabdophora (222)
- Infraphylum Spirotrichia (350)
- Infraphylum Ventrata (1 088)
- Class Colpodea (8)
- Class Nassophorea (47)
- Class Oligohymenophorea (624)
- Subclass Apostomatia (21)
- Subclass Astomatia (9)
- Subclass Hymenostomatia (9)
- Subclass Peniculia (41)
- Subclass Peritrichia (347)
- Subclass Scuticociliatia (197)
- Order Philasterida (104)
- Family Cinetochilidae Perty, 1852 (13)
- Family Cohnilembidae Kahl, 1933 (7)
- Family Cryptochilidae Berger in Corliss, 1979 (4)
- Family Entodiscidae Jankowksi, 1973 (3)
- Family Entorhipidiidae Madsen, 1931 (1)
- Family Loxocephalidae Jankowksi, 1964 (8)
- Family Orchitophryidae Cépède, 1910 (11)
- Family Paralembidae Corliss & de Puytorac in Samall & Lynn, 1985 (5)
- Family Parauronematidae Small & Lynn, 1985 (6)
- Genus Glauconema Thompson, 1966 (2)
- Genus Miamiensis Thompson & Moewus, 1964 (1)
- Genus Parauronema Thompson, 1967 (3)
- Family Philasterida incertae sedis (1)
- Family Philasteridae Kahl, 1931 (11)
- Family Pseudocohnilembidae Evans & Thompson, 1964 (8)
- Family Schizocaryidae Jankowksi, 1979
- Family Thigmophryidae Chatton & Lwoff, 1926 (6)
- Family Thyrophylacidae Bergen in Corliss, 1961
- Family Uronematidae Thompson, 1964 (20)
- Order Pleuronematida (69)
- Order Thigmotrichida (24)
- Class Phyllopharyngea (267)
- Class Plagiopylea (25)
- Class Prostomatea (117)
- Class Oligotrichea (684)
- Subphylum Postciliodesmatophora (308)
- Class Kinetofragminophora
- Class Polyhymenophora accepted as Postciliodesmatophora
- Phylum Myzozoa (3 292)
- Infrakingdom Heterokonta (2 795)
- Infrakingdom Rhizaria (9 657)
- Phylum Chromeridophyta (1)
- Phylum Bacillariophyta (1)
- Phylum Chrysophyta accepted as Chrysophyceae
- Phylum Heterokontophyta (1 794)
- Phylum Xanthophyta accepted as Xanthophyceae
- Kingdom Fungi (1 432)
- Kingdom Monera represented as Bacteria
- Kingdom Plantae (10 581)
- Kingdom Protozoa (766)
- Kingdom Viruses (115)
