Between brackets is the number of accepted species
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- Biota
- Kingdom Animalia
- Phylum Acanthocephala
- Phylum Agmata †
- Phylum Animalia (awaiting allocation)
- Phylum Animalia incertae sedis
- Phylum Annelida
- Phylum Arthropoda
- Subphylum Chelicerata
- Class Arachnida
- Order Acari (awaiting allocation)
- Order Acariformes (awaiting allocation)
- Order Actinedida
- Order Amblypygi
- Order Arachnida (awaiting allocation)
- Order Arachnida incertae sedis
- Order Araneae
- Order Architarbida †
- Order Astigmata
- Family Acaridae Ewing & Nesbitt, 1942
- Genus Acarellus Westwood, 1870 accepted as Acarus Linnaeus, 1758
- Genus Acarellus Tatem, 1872 accepted as Acarus Linnaeus, 1758
- Genus Acaridae Klimov & Khaustov, 2018
- Genus Acarotalpa Volgin, 1966
- Genus Acarus Linnaeus, 1758
- Genus Achropodophorus Rosas Costa, 1929 accepted as Caloglyphus Berlese, 1924
- Genus Acotyledon Oudemans, 1902
- Genus Aellenella Mahunka, 1978
- Genus Aleurobius Canestrini, 1888 accepted as Acarus Linnaeus, 1758
- Genus Aleuroglyphus Zachvatkin, 1941
- Genus Aleuroglyphus Zachvatkin, 1936 accepted as Aleuroglyphus Zachvatkin, 1941
- Genus Amhorstia Fain, 1984 accepted as Horstia Oudemans, 1905
- Genus Amphicalvolia Türk, 1963 †
- Genus Apiacarus Volgin, 1974 †
- Genus Ararus Oudemans, 1901 accepted as Acarus Linnaeus, 1758
- Genus Armacarus Mahunka, 1979
- Genus Ascarus Claus, 1880 accepted as Acarus Linnaeus, 1758
- Genus Askinasia Yunker, 1970
- Genus Australhypopus Fain & Friend, 1984
- Genus Baloghella Mahunka, 1963
- Genus Bembidioglyphus Klimov, 1998
- Genus Boletacarus Volgin & Mironov, 1980
- Genus Boletoglyphus Volgin, 1953
- Genus Bromeliaglyphus Nesbitt, 1985
- Genus Caepophagus Mégnin, 1880 accepted as Rhizoglyphus Claparède, 1869
- Genus Caloglyphus Berlese, 1924 accepted as Sancassania Oudemans, 1916
- Genus Calvoliella Samsinak, 1969
- Genus Calvoliopsis Mahunka, 1973
- Genus Capillaroglyphus Klimov, 1998
- Genus Carabidobius Volgin, 1953
- Genus Celognathus Mégnin, 1880 accepted as Tyrophagus Oudemans, 1924
- Genus Ceroglyphus Vitzthum, 1920 accepted as Horstia Oudemans, 1905
- Genus Cerophagopsis Zachvatkin, 1941
- Genus Cerophagus Oudemans, 1903
- Genus Chibidaria Sasa, 1952
- Genus Coelognathus Hessling, 1852 accepted as Tyrophagus Oudemans, 1924
- Genus Coepophagus Mégnin, 1880 accepted as Rhizoglyphus Claparède, 1869
- Genus Comerinia Ferguson, 1985 accepted as Madaglyphus Fain, 1971
- Genus Contramelisia Zoological Record accepted as Contromelisia Samsinak, 1969
- Genus Contromelisia Samsinak, 1969
- Genus Cosmoglyphus Oudemans, 1932
- Genus Ctenocolletacarus Fain, 1984
- Genus Diadasiopus OConnor, 1997
- Genus Diphtheroglyphus Nesbitt, 1950
- Genus Dorylacarus Mahunka, 1979 accepted as Forcellinia Oudemans, 1924
- Genus Dynastopus Fain, 1978
- Genus Eberhardia Oudemans, 1924 accepted as Cosmoglyphus Oudemans, 1932
- Genus Ebertia Oudemans, 1924
- Genus Egyptglyphus Eraky, Abd El-Wahed, Abdelgayed & Ali, 2019
- Genus Ellipsopus Fain & Ide, 1976 accepted as Boletoglyphus Volgin, 1953
- Genus Ewingia Pearse, 1929
- Genus Fagacarus Fain & Norton, 1979
- Genus Fainoglyphus Mahunka, 1979
- Genus Fantovia Samsinák, 1957 accepted as Boletoglyphus Volgin, 1953
- Genus Forcellinia Oudemans, 1924
- Genus Foumouzea Zachvatkin, 1953 accepted as Thyreophagus Rondani, 1874
- Genus Froriepia Vitzthum, 1919
- Genus Fumouzea Zachvatkin, 1953 accepted as Thyreophagus Rondani, 1874
- Genus Garsaultia Oudemans, 1916
- Genus Gaudiella Atyeo, Baker & Delfinado, 1974
- Genus Ghanacarus Mahunka, 1973
- Genus Halictacarus Mahunka, 1975
- Genus Hemimeropus Fain & Beaucournu, 1976 accepted as Psylloglyphus Fain, 1966
- Genus Heteroglyphus Foà, 1909
- Genus Heteroglyphus Foa, 1897
- Genus Histiogaster Berlese, 1883
- Genus Hoogstraalacarus Yunker, 1970
- Genus Horstia Oudemans, 1905
- Genus Horstiella Turk, 1948
- Genus Hortacarus Mahunka, 1978
- Genus Hungaroglyphus Mahunka, 1962 accepted as Forcellinia Oudemans, 1924
- Genus Hyohondania Sasa, 1952
- Genus Irianopus Fain, 1986
- Genus Isoglyphus Zachvatkin, 1937 accepted as Caloglyphus Berlese, 1924
- Genus Jacolietta Zoological Record accepted as Schwiebea Oudemans, 1916
- Genus Jacotietta Fain, 1976 accepted as Schwiebea Oudemans, 1916
- Genus Kanekobia Fain, Yunker, van Goethem & Johnston, 1982
- Genus Kargoecius Fain, 1985
- Genus Konoglyphus Delfinado & Baker, 1974 †
- Genus Kucinia Zoological Record accepted as Kuzinia Zachvatkin, 1941
- Genus Kuzinia Zachvatkin, 1941
- Genus Lackerbaueria Zachvatkin, 1942
- Genus Lackerbaüeria Zachvatkin, 1942 accepted as Lackerbaueria Zachvatkin, 1942
- Genus Lagenoglyphus Berlese, 1924 accepted as Caloglyphus Berlese, 1924
- Genus Lamtoglyphus Fain, 1974 †
- Genus Lasioacarus Kadzhaya & Sevastyanov, 1967 accepted as Lasioacarus Kadzhyaya, 1968
- Genus Lasioacarus Kadzhyaya, 1968
- Genus Lemmaniella Mahunka, 1977
- Genus Lindquistia Mahunka, 1977 accepted as Boletoglyphus Volgin, 1953
- Genus Lindquistiella Mahunka, 1977 accepted as Boletoglyphus Volgin, 1953
- Genus Lowryacarus Fain, 1986
- Genus Machadoglyphus Mahunka, 1963
- Genus Madaglyphus Fain, 1971
- Genus Mahunkaglyphus Eraky, 1998
- Genus Mahunkallinia Eraky, 1999
- Genus Mauracarus Mahunka, 1978
- Genus Medeus Volgin, 1974 †
- Genus Megachilopus Fain, 1974
- Genus Megninietta Jacot, 1936 accepted as Schwiebea Oudemans, 1916
- Genus Mezorhizoglyphus Kadzhaya, 1966
- Genus Michaelopus Fain & Johnston, 1974 accepted as Thyreophagus Rondani, 1874
- Species Michaelopus annae Sevastianov & Kivganov, 1992 accepted as Thyreophagus annae (Sevastianov & Kivganov, 1992)
- Species Michaelopus athiasae Fain, 1982 accepted as Thyreophagus athiasae (Fain, 1982)
- Species Michaelopus evansi Fain, 1982 accepted as Thyreophagus evansi (Fain, 1982)
- Species Michaelopus incanus Fain, 1987 accepted as Thyreophagus incanus (Fain, 1987)
- Species Michaelopus johnstoni Fain, 1982 accepted as Thyreophagus johnstoni (Fain, 1982)
- Species Michaelopus leclercqi Fain, 1982 accepted as Thyreophagus leclercqi (Fain, 1982)
- Species Michaelopus longiretinalis Klimov, 1999 accepted as Thyreophagus longiretinalis (Klimov, 1999)
- Species Michaelopus macfarlanei Fain, 1982 accepted as Thyreophagus macfarlanei (Fain, 1982)
- Species Michaelopus passerinus de la Cruz, 1990 accepted as Thyreophagus passerinus (de la Cruz, 1990)
- Species Michaelopus rwandanus Fain, 1982 accepted as Thyreophagus rwandanus (Fain, 1982)
- Species Michaelopus spinitarsus Fain, 1982 accepted as Thyreophagus spinitarsus (Fain, 1982)
- Species Michaelopus tridens Fain & Lukoschus, 1986 accepted as Thyreophagus tridens (Fain & Lukoschus, 1986)
- Genus Monetiella Berlese, 1898 accepted as Thyreophagus Rondani, 1874
- Genus Moneziella Berlese, 1897 accepted as Thyreophagus Rondani, 1874
- Genus Monieziella Berlese, 1898 accepted as Thyreophagus Rondani, 1874
- Genus Murodania Kugoh, 1957 accepted as Cosmoglyphus Oudemans, 1932
- Genus Mycetoglyphus Oudemans, 1932
- Genus Mycetosancassania Klimov, 2000
- Genus Myrmoglyphus Vitzthum, 1935
- Genus Myrmolichus Türk & Türk in Stammer, 1957
- Genus Naiacus Nesbitt, 1990
- Genus Naiadacarus Fashing, 1974
- Genus Naladacarus accepted as Naiadacarus Fashing, 1974
- Genus Neoacotyledon Samsinak, 1980
- Genus Neohorstia Zachvatkin, 1941
- Genus Neotropacarus Baker, 1985
- Genus Notiopsyllopus Fain, 1977
- Genus Ocellacarus Mahunka, 1979
- Genus Olafsenia Oudemans, 1924
- Genus Omentopus Fain, 1978
- Genus Pachyglyphus Berlese, 1924 accepted as Caloglyphus Berlese, 1924
- Genus Paraceroglyphus Fain & Beaucournu, 1973
- Genus Paraforcellinia Kadzhaya, 1973
- Genus Passaloglyphus Mahunka & Samsinak, 1972
- Genus Paulacarellus Fain, 1977
- Genus Petzschia Oudemans, 1923 accepted as Horstia Oudemans, 1905
- Genus Phycoditum Volgin & Shchur, 1974 accepted as Pontoppidania Oudemans, 1923
- Genus Pinoglyphus Mahunka, 1978
- Genus Platyglyphus Kurosa, 1976
- Genus Podoglyphus Oudemans, 1937
- Genus Pontoppidania Oudemans, 1923
- Genus Povelsenia Oudemans, 1924 accepted as Tyrophagus Oudemans, 1924
- Genus Psyllacarus Fain, Bartholomaeus, Cooke & Beaucournu, 1990
- Genus Psyllobia Fain, Bartholomaeus, Cooke & Beaucournu, 1990 accepted as Psylloglyphus Fain, 1966
- Genus Psyllopus Fain & Beaucournu, 1993
- Genus Reckiacarus Kadzhaya, 1972
- Genus Rettacarus Mahunka, 1979
- Genus Rhisoglyphus Zoological Record accepted as Rhizoglyphus Claparède, 1869
- Genus Rhizoglyphoides Volgin, 1978
- Genus Rhizoglyphoides Umbetalina, 1975 accepted as Rhizoglyphoides Volgin, 1978
- Genus Rhizoglyphus Claparède, 1869
- Genus Rhypoglyphus Potter & Olson, 1987 accepted as Cerophagopsis Zachvatkin, 1941
- Genus Rhyzoglyphus Leonardi, 1900 accepted as Rhizoglyphus Claparède, 1869
- Genus Robinisca Zachvatkin, 1941 accepted as Schwiebea Oudemans, 1916
- Genus Rodinovia Zoological Record accepted as Rodionovia Zachvatkin, 1941
- Genus Rodionovia Zachvatkin, 1941
- Genus Sancassania Oudemans, 1916
- Genus Scatoglyphus Berlese, 1913
- Genus Schulzea Zachvatkin, 1941
- Genus Schwiebea Oudemans, 1916
- Genus Schwiebia
- Genus Sennertionyx Zachvatkin, 1941
- Genus Setoglyphus Mahunka, 1979
- Genus Sinolardoglyphus Jiang, 1991
- Genus Sinosuidasia Jiang, 1996
- Genus Sphecacarus Klimov in Klimov & Tolstikov, 2011
- Genus Spinacaropus Fain & Camerik, 1978
- Genus Stereoglyphus Berlese, 1924
- Genus Stunkardacarus Fain, 1979 accepted as Cosmoglyphus Oudemans, 1932
- Genus Terglyphus Samsinak, 1965
- Genus Tetrapsyllopus Fain & Beaucournu, 1986 accepted as Psylloglyphus Fain, 1966
- Genus Thectochloracarus Fain, Engel, Flechtmann & OConnor, 1999
- Genus Thyreophagus Rondani, 1874
- Genus Thyrophagus
- Genus Trichopsyllopus Fain & Baker, 1983
- Genus Troglocoptes Fain, 1966 †
- Genus Tropacarus Cunliffe, 1964 accepted as Neotropacarus Baker, 1985
- Genus Troupeauia Zachvatkin, 1941 accepted as Schwiebea Oudemans, 1916
- Genus Troxocoptes Fain & Philips, 1983
- Genus Tyroborus Oudemans, 1924
- Genus Tyroglyphites Pampaloni, 1902 †
- Genus Tyroglyphopsis Vitzthum, 1926 accepted as Histiogaster Berlese, 1883
- Genus Tyroglyphus Latreille, 1796 accepted as Acarus Linnaeus, 1758
- Genus Tyroglypus Canestrini, 1897 accepted as Acarus Linnaeus, 1758
- Genus Tyrolichus Oudemans, 1924
- Genus Tyrophagus Oudemans, 1924
- Genus Umakefeq Klimov, 2000
- Genus Valmontia Oudemans, 1923
- Genus Viedebanttia Oudemans, 1929
- Genus Volginia Kadzhaya, 1967
- Family Acaroidea incertae sedis
- Family Aeroglyphidae Zakhvatkin, 1941
- Family Algophagidae Fain, 1974
- Family Alloptidae Gaud, 1957
- Family Analgesidae Trouessart, 1915 accepted as Analgidae Trouessart & Mégnin, 1884
- Family Analgidae Trouessart & Mégnin, 1884
- Family Anoetidae Oudemans, 1904 accepted as Histiostomatidae Berlese, 1897
- Family Apionacaridae Gaud & Atyeo, 1977
- Family Ascouracaridae Gaud & Atyeo, 1976
- Family Atopomelidae Gunther, 1942
- Family Audycoptidae Lavoipierre, 1964
- Family Avenzoariidae Oudemans, 1905
- Family Bochkovocoptidae OConnor, 2019
- Family Caminosioptidae Green, 1989 accepted as Laminosioptidae Vitzthum, 1931
- Family Canestriniidae Berlese, 1884
- Family Carpoglyphidae Oudemans, 1923
- Family Carpolglyphidae accepted as Carpoglyphidae Oudemans, 1923
- Family Caudiferidae Gaud & Atyeo, 1978
- Family Chaetodactylidae Zakhvatkin, 1941
- Family Chetochelacaridae Fain, 1987
- Family Cheylabididae Gaud, 1983
- Family Chirodiscidae Trouessart, 1892
- Family Chirorhynchobiidae Fain, 1967
- Family Chortoglyphidae Berlese, 1897
- Family Cnemidocoptidae accepted as Knemidokoptidae Dubinin, 1953
- Family Crypturoptidae Gaud, Atyeo & Berla, 1972
- Family Cytoditidae Oudemans, 1908
- Family Cytoleichidae Canestrini, 1892 accepted as Cytoditidae Oudemans, 1908
- Family Czenspinskiidae Oudemans, 1927 accepted as Winterschmidtiidae Oudemans, 1923
- Family Dermationidae Fain, 1965
- Family Dermoglyphidae Mégnin & Trouessart, 1884
- Family Echimyopodidae Fain, 1967
- Family Epidermoptidae Trouessart, 1892
- Family Euglycyphagidae Fain & Philips, 1977
- Family Eustathiidae Oudemans, 1905
- Family Evansacaridae Fain, 1962 accepted as Knemidokoptidae Dubinin, 1953
- Family Faculiferidae accepted as Falculiferidae Oudemans, 1905
- Family Falculiferidae Oudemans, 1905
- Family Freyanidae Dubinin, 1953
- Family Freyanoidae accepted as Freyanidae Dubinin, 1953
- Family Gabuciniidae Gaud & Atyeo, 1975
- Family Galagalgidae Fain, 1963
- Family Gastronyssidae Fain, 1956
- Family Gaudiellidae Atyeo, Baker & Delfinado, 1974
- Family Gaudoglyphidae W.A. Bruce & Johnston, 1976
- Family Glaesacaridae Klimov & Sidorchuk, 2011 †
- Family Glycacaridae Griffiths, 1977
- Family Glycyphagidae Berlese, 1887
- Family Guanolichidae Fain, 1968
- Family Hemisarcoptidae Oudemans, 1908
- Family Heterocoptidae Fain, 1967
- Family Heteropsoridae Oudemans, 1908
- Family Histiostomatidae Berlese, 1897
- Family Hyadesidae accepted as Hyadesiidae Halbert, 1915
- Family Hyadesiidae Halbert, 1915
- Family Hyperoderidae Murray, 1877 accepted as Hypoderidae Murray, 1877
- Family Hypodectidae Fain & Bafort, 1966 accepted as Hypoderidae Murray, 1877
- Family Hypoderatidae accepted as Hypoderidae Murray, 1877
- Family Hypoderidae Murray, 1877
- Family Kiwilichidae Dabert, 1994
- Family Knemidocoptidae Dubinin, 1953 accepted as Knemidokoptidae Dubinin, 1953
- Family Knemidokoptidae Dubinin, 1953
- Family Kramerellidae Gaud & Mouchet, 1961
- Family Kytoditidae Oudemans, 1908
- Family Laminosioptidae Vitzthum, 1931
- Family Lardoglyphidae Oudemans, 1927
- Family Lemanniellidae Wurst, 2001 accepted as Suidasiidae Hughes, 1948
- Family Lemurnyssidae Fain, 1957
- Family Levantoglyphidae Klimov, Vorontsov, Azar, Sidorchuk, Braig, Khaustov & Tolstikov, 2021 †
- Family Linobiidae Oudemans, 1908 accepted as Hemisarcoptidae Oudemans, 1908
- Family Listrophoridae Canestrini, 1892
- Family Listropsoralgidae Fain, 1965
- Family Lobalgidae Fain, 1965
- Family Lophonotacaridae Fain, 1987
- Family Myialgesidae Trouessart, 1907 accepted as Epidermoptidae Trouessart, 1892
- Family Myocoptidae Gunther, 1942
- Family Nanacaridae Oudemans, 1923 accepted as Hemisarcoptidae Oudemans, 1908
- Family Nodipalpidae Oudemans, 1923 accepted as Histiostomatidae Berlese, 1897
- Family Ochrolichidae Gaud & Atyeo, 1978
- Family Oconnoriidae Gaud, Atyeo & Klompen, 1989
- Family Ovacaridae Gaud & Atyeo, 1975
- Family Pedetopodidae
- Family Pedetropodidae accepted as Pedetopodidae
- Family Pneumocoptidae Fain, 1957
- Family Proctophyllodidae Mégnin & Trouessart, 1884
- Family Psoralgidae Oudemans, 1908
- Family Psoroptidae G. Canestrini, 1892
- Family Psoroptoididae Gaud, 1983
- Family Pterolichidae Trouessart & Mégnin, 1884
- Family Pteronyssidae Oudemans, 1941
- Family Ptiloxenidae J. Gaud, 1982
- Family Ptyssalgidae Atyeo & Gaud, 1979
- Family Pyroglyphidae Cunliffe, 1958
- Family Rectijanuidae Gaud, 1961
- Family Rhynchoptidae accepted as Rhyncoptidae Lawrence, 1956
- Family Rhyncoptidae Lawrence, 1956
- Family Rosensteiniidae Cooreman, 1954
- Family Sapracaridae Fain, 1988
- Family Saproglyphidae Oudemans, 1924
- Family Sarcoptidae Murray, 1877
- Family Schizoglyphidae Mahunka, 1978
- Family Suidasiidae Hughes, 1948
- Family Syringobiidae Trouessart, 1897
- Family Thoracosathesidae Gaud & Mouchet, 1959
- Family Thysanocercidae Atyeo & Peterson, 1972
- Family Troglotacaridae Fain, 1977
- Family Trouessartiidae Gaud, 1957
- Family Turbinoptidae Fain, 1957
- Family Tyroglyphidae
- Family Vexillariidae Gaud & Mouchet, 1959
- Family Winterschmidtiidae Oudemans, 1923
- Family Xolalgidae Dubinin, 1953
- Order Haptopodida †
- Order Holothyrida
- Order Ixodida
- Order Mesostigmata
- Order Opilioacarida
- Order Opiliocariformes
- Order Opiliones
- Order Opilionida accepted as Opiliones
- Order Oribatida
- Order Palaeoscorpiones †
- Order Palpigradi
- Order Parasitiformes (awaiting allocation)
- Order Phalangiotarbida
- Order Protoscorpiones †
- Order Pseudoscorpionida
- Order Ricinulei
- Order Ricinuleida accepted as Ricinulei
- Order Schizomida
- Order Scorpiones
- Order Scorpionida accepted as Scorpiones
- Order Solifugae
- Order Solpugida accepted as Solifugae
- Order Trigonotarbida †
- Order Trombidiformes
- Order Uropygi
- Class Merostomata accepted as Xiphosura
- Class Pycnogonida
- Class Xiphosura
- Order Chasmataspidida †
- Order Cyrtoctenida † accepted as Eurypterida †
- Order Eurypterida †
- Order Mollisoniida †
- Family Bunodidae Packard, 1886 †
- Family Offacolidae Sutton, Briggs, Siveter, Siveter & Orr, 2002 †
- Family Pseudoniscidae Packard, 1886 †
- Family Weinberginidae Richter & Richter, 1929 † accepted as Chelicerata
- Genus Anderella Moore, McKenzie & Lieberman, 2007 †
- Genus Borchgrevinkium Novojilov, 1958 †
- Genus Camanchia Moore, Briggs, Braddy & Shultz, 2011 †
- Genus Lagrandella Eldredge, 1974 † accepted as Legrandella Eldredge, 1974 †
- Genus Legrandella Eldredge, 1974 †
- Genus Sarotrocercus Whittington, 1981 †
- Genus Setapedites Lustri, Gueriau & Daley, 2024 †
- Genus Titanoprosoma Bicknell, Kimmig, Smith & Scherer, 2024 †
- Genus Venustulus Moore in Moore et al., 2005 †
- Genus Weinbergina Richter & Richter, 1929 †
- Subphylum Crustacea
- Subphylum Hexapoda
- Subphylum Myriapoda
- Subphylum Trilobitomorpha †
- Class Arachnomorpha (awaiting allocation)
- Class Arthropoda (awaiting allocation)
- Class Artiopoda †
- Class Crustaceomorpha incertae sedis †
- Class Dinocaridida †
- Class Labrophora incertae sedis
- Class Lamellipedia incertae sedis
- Class Megacheira †
- Class Thylacocephala †
- Class Xenocarida incertae sedis
- Order Canadaspidida † accepted as Hymenocarina †
- Order Cheloniellida †
- Order Emeraldellida † accepted as Arthropoda
- Order Fuxianhuiida †
- Order Habeliida †
- Order Hymenocarina †
- Order Isoxyida †
- Order Pectocaridida † accepted as Hymenocarina †
- Order Waptiida † accepted as Hymenocarina †
- Family Bomakellidae Fedonkin, 1987 †
- Family Burgessiidae Walcott, 1912 †
- Family Emeraldellidae Raymond, 1935 †
- Family Guangweicarididae Luo, Fu, Hu, Li, Hou, You, Pang & Liu, 2007 †
- Genus Aaveqaspis Peel & Stein, 2009 †
- Genus Acheronauta Pulsipher, Anderson, Wright, Kluessendorf, Mikulic & Schiffbauer, 2022 †
- Genus Arthroaspis Stein, Budd, Peel & Harper, 2013 †
- Genus Astutuscaris Jiao & Du, 2022 †
- Genus Bennettarthra Fayers, Trewin & Morrissey, 2010 †
- Genus Bushizheia O'Flynn & Liu in O'Flynn et al., 2020 †
- Genus Chuandianella Hou & Bergström, 1991 †
- Genus Dioxycaris Gürich, 1929 †
- Genus Dongshanocaris Hou, Bergström, Wang, Feng & Chen, 1999 †
- Genus Duraznovis Lara, Cariglino & Zavattieri in Lara et al., 2019 †
- Genus Duraznovs Lara, Cariglino & Zavattieri in Lara et al., 2019 † accepted as Duraznovis Lara, Cariglino & Zavattieri in Lara et al., 2019 †
- Genus Esmeraldacaris Waggoner, 2003 †
- Genus Fibulacaris Izquierdo-López & Caron, 2019 †
- Genus Kiisortoqia Stein, 2010 †
- Genus Kylinxia Zeng, Zhao, Niu, Zhu & Huang, 2020 †
- Genus Lihuacaris Jiao, Pates, Lerosey-Aubril, Ortega-Hernández, Yang, Lan & Zhang, 2021 †
- Genus Norikeya Tanaka, Siveter & Williams, 2013 †
- Genus Nothozoe Barrande, 1872 †
- Genus Nothozoe Barrande in Bigsby, 1868 † accepted as Nothozoe Barrande, 1872 †
- Genus Notozoe Zittel, 1885 † accepted as Nothozoe Barrande, 1872 †
- Genus Pakucaris Izquierdo-López & Caron, 2021 †
- Genus Pambdelurion Budd, 1998 †
- Genus Parvibellus Liu, Dunlop, Steiner & Shu, 2022 †
- Genus Pleuralata McCoy, Strother & Briggs, 2012 †
- Genus Pseudoangustidontus Van Roy & Tetlie, 2006 †
- Genus Pteroessa Hudson & Gosse, 1886
- Genus Sidneyia Walcott, 1911 †
- Genus Siriocaris Lagebro, Stein & Peel, 2009 †
- Genus Vermontcaris Pari, Briggs & Gaines, 2022 †
- Genus Youti Smith, Long, Dhungana, Dobson, Yang & Zhang, 2024 †
- Phylum Brachiopoda
- Phylum Bryozoa
- Phylum Cephalorhyncha incertae sedis
- Phylum Chaetognatha
- Phylum Chitinozoa †
- Phylum Chordata
- Phylum Cnidaria
- Phylum Ctenophora
- Phylum Cycliophora
- Phylum Cycloneuralia incertae sedis
- Phylum Ecdysozoa incertae sedis †
- Phylum Echinodermata
- Phylum Entoprocta
- Phylum Gastrotricha
- Phylum Gnathostomulida
- Phylum Hemichordata
- Phylum Hyolitha †
- Phylum Kinorhyncha
- Phylum Lobopoda †
- Phylum Loricifera
- Phylum Micrognathozoa
- Phylum Mollusca
- Phylum Monoblastozoa accepted as Animalia incertae sedis
- Phylum Nematoda
- Phylum Nematomorpha
- Phylum Nemertea
- Phylum Onychophora
- Phylum Orthonectida
- Phylum Phoronida
- Phylum Placozoa
- Phylum Platyhelminthes
- Phylum Pogonophora accepted as Siboglinidae Caullery, 1914
- Phylum Porifera
- Phylum Priapula accepted as Priapulida
- Phylum Priapulida
- Phylum Problematica † accepted as Animalia incertae sedis
- Phylum Rhombozoa
- Phylum Rotifera
- Phylum Scalidophora incertae sedis
- Phylum Sipuncula
- Phylum Tardigrada
- Phylum Trace fossils †
- Phylum Vendobionta †
- Phylum Vestimentifera accepted as Siboglinidae Caullery, 1914
- Phylum Vetulicolia †
- Phylum Vinctiplicata incertae sedis †
- Phylum Xenacoelomorpha
- Genus Trilobocaris Pribyl, 1953 †
- Kingdom Archaea
- Kingdom Bacteria
- Kingdom Chromista
- Kingdom Fungi
- Kingdom Plantae
- Kingdom Protista accepted as Protozoa
- Kingdom Protozoa
- Kingdom Viruses
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