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
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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)
- Phylum Myzozoa (3 292)
- Subphylum Apicomplexa (586)
- Infraphylum Sporozoa (577)
- Class Aconoidasida (7)
- Class Coccidea accepted as Coccidiasina
- Class Conoidasida (569)
- Subclass Coccidiasina (182)
- Subclass Gregarinasina (387)
- Order Archigregarinorida (13)
- Family Exoschizonidae Levine, 1971 (1)
- Family Selenidioididae Levine, 1971 (12)
- Genus Merogregarina Porter, 1908 (1)
- Genus Meroselenidium Mackinnon & Ray, 1933 (1)
- Genus Schizocystis Léger, 1900
- Genus Selenidioides Levine, 1971 (10)
- Species Selenidioides axiferens Fowell, 1936
- Species Selenidioides caulleryi Brasil, 1907
- Species Selenidioides fanthami Levine, 1971
- Species Selenidioides giganteum (Harant, 1931) Levine, 1971 accepted as Lankesteria maculata Ormières, 1965
- Species Selenidioides grassei Théorides & Desportes, 1968
- Species Selenidioides hawesi Levine, 1971
- Species Selenidioides hollandei (Vivier & Schrével, 1966) accepted as Selenidium hollandei Vivier & Schrével, 1966
- Species Selenidioides intraepitheliale Reichenow, 1932
- Species Selenidioides mesnili Brasil, 1909
- Species Selenidioides metchnikovi Léger & Dubosq, 1917
- Species Selenidioides potamillae Mackinnon & Ray, 1933
- Species Selenidioides sipunculi Dogiel, 1907
- Order Arthrogregarida (1)
- Order Eugregarinorida (373)
- Class Gregarinea accepted as Gregarinasina
- Class Haematozoa accepted as Aconoidasida
- Class Sporozoa incertae sedis (1)
- Class Apicomonadea (3)
- Class Apicomplexa incertae sedis (6)
- Subphylum Dinozoa (2 706)
- 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)
