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
- Suborder Octopoda accepted as Actinedida
- Suborder Tetrapoda accepted as Actinedida
- Family Acalyptonotidae Walter, 1911
- Family Acarophaenacidae accepted as Acarophenacidae Cross, 1965
- Family Acarophenacidae Cross, 1965
- Family Acercidae Thor, 1909 accepted as Pionidae Thor, 1900
- Family Acucapitidae Wiles, 1996
- Family Adamystidae Cunliffe, 1957
- Family Alichorhagiidae accepted as Alicorhagiidae Grandjean, 1939
- Family Alicorhagiidae Grandjean, 1939
- Family Allochaetophoridae Reck, 1959
- Family Alycidae Canestrini & Fanzago, 1877
- Family Amoenacaridae Smith & Cook, 1997
- Family Amphotrombiidae Zhang, 1998
- Family Anisitiellidae accepted as Anisitsiellidae Koenike, 1910
- Family Anisitsiellidae Koenike, 1910
- Family Anystidae Oudemans, 1902
- Family Apheviderulicidae Gerecke, Smith & Cook, 1999
- Family Arenohydracaridae Cook, 1974
- Family Arrenuridae Thor, 1900
- Family Astacocrotidae accepted as Astacocrotonidae Thor, 1927
- Family Astacocrotonidae Thor, 1927
- Family Athienemaniidae accepted as Athienemanniidae Viets, 1922
- Family Athienemanniidae Viets, 1922
- Family Athyreacaridae Lindquist, Kaliszewski & Rack, 1990
- Family Atracidae Thor, 1900 accepted as Unionicolidae Oudemans, 1909
- Family Atractideidae Thor, 1902 accepted as Torrenticolidae Piersig, 1902
- Family Aturidae Thor, 1900
- Family Audyanidae Southcott, 1987
- Family Axonopsidae Viets, 1929
- Family Barbutiidae Robaux, 1975
- Family Bdellidae Dugès, 1834
- Family Bembidiacaridae Khuastov, 2000
- Family Bimichaelidae accepted as Bimichaeliidae Womersley, 1944
- Family Bimichaeliidae Womersley, 1944
- Family Bogatiidae Motas & Tanasachi, 1948
- Family Bradypodidae Thor, 1900 accepted as Aturidae Thor, 1900
- Family Caeculidae Berlese, 1883
- Family Caligonellidae Grandjean, 1944
- Family Calyptostomatidae Oudemans, 1923
- Family Calyptostomidae Oudemans, 1923 accepted as Calyptostomatidae Oudemans, 1923
- Family Camerobiidae Southcott, 1957
- Family Caraboacaridae Mahunka, 1970
- Family Chappuisididae Motas & Tanasachi, 1946
- Family Chathrosperchonidae Lundblad, 1936 accepted as Rhynchohydracaridae Lundblad, 1936
- Family Chelomideopsidae Lundblad, 1962 accepted as Athienemanniidae Viets, 1922
- Family Cheyletidae Leach, 1815
- Family Chyzeriidae Womersley, 1954
- Family Cloacaridae Camin, Moss, Oliver & Singer, 1967
- Family Cocceupodidae Jesionowska, 2010
- Family Crotalomorphidae Lindquist & Krantz, 2002
- Family Cryptognathidae Oudemans, 1902
- Family Cryptognathiidae accepted as Cryptognathidae Oudemans, 1902
- Family Ctenothyadidae Lundblad, 1936
- Family Ctenothyasidae Lundblad, 1936 accepted as Ctenothyadidae Lundblad, 1936
- Family Cunaxidae Thor, 1902
- Family Curvipedidae Thor, 1900 accepted as Pionidae Thor, 1900
- Family Dasythyreidae Walter & Gerson, 1998
- Family Demodecidae Nicolet, 1855
- Family Demodicidae accepted as Demodecidae Nicolet, 1855
- Family Diplodontidae Lundblad, 1927 accepted as Hydrodromidae Viets, 1936
- Family Diptilomiopidae Keifer, 1944
- Family Dolichocybidae Mahunka, 1970
- Family Epallagopodidae Viets, 1953 accepted as Limnesiidae Thor, 1900
- Family Ereynetidae Oudemans, 1931
- Family Eriophyidae Nalepa, 1898
- Genus Abacarus Keifer, 1944
- Genus Aberoptus Keifer, 1951
- Genus Absentia Huang, 2001 accepted as Huangiella Kammerer, 2006
- Genus Acadicrus Keifer, 1965
- Genus Acalitus Keifer, 1965
- Genus Acalox Keifer, 1975
- Genus Acamina Keifer, 1944
- Genus Acanthonotus Nalepa, 1889 accepted as Tegonotus Nalepa, 1890
- Genus Acaphylla Keifer, 1944
- Genus Acaphyllisa Keifer, 1978
- Genus Acaralox Keifer, 1966
- Genus Acarelliptus Keifer, 1940
- Genus Acaricalus Keifer, 1940
- Genus Acaspina Huang, Huang & Hong, 1989 accepted as Notacaphylla Mohanasundaram & Singh, 1988
- Genus Aceria Keifer, 1944
- Genus Acerimina Keifer, 1957
- Genus Achaetocoptes Farkas, 1961
- Genus Aciota Keifer, 1959
- Genus Acritonotus Keifer, 1962
- Genus Aculochetus Amrine, 1996
- Genus Aculodes Keifer, 1966
- Genus Aculops Keifer, 1966
- Genus Aculus Keifer, 1959
- Genus Acunda Keifer, 1965
- Genus Adenocolus Smith, Meyer & Ueckermann, 1997
- Genus Adenoptus Mitrofanov, Sekerskaya & Sharonov, 1983
- Genus Adventacarus Ripka, 2011
- Genus Aequsomatus Meyer & Ueckermann, 1995
- Genus Afemurseta Tan, Huang, Fu & Wang, 2014
- Genus Afromerus Smith-Meyer, 1990
- Genus Amrineus Flechtmann, 1994
- Genus Anothopoda Keifer, 1959
- Genus Anthocoptes Nalepa, 1892
- Genus Anthopoda Zoological Record accepted as Anothopoda Keifer, 1959
- Genus Apontella Boczek & Nuzzaci, 1988
- Genus Araucarioptes Flechtmann, 2000
- Genus Arectus Manson, 1984
- Genus Artacris Keifer, 1970 accepted as Aceria Keifer, 1944
- Genus Asetiabacarus Li, Wei & Wang, 2006
- Genus Asetidicrothrix Wei, Wang & Qin, 2009
- Genus Asetilobus Manson, 1984
- Genus Ashieldophyes Mohanasundaram, 1985
- Genus Athrix Flechtmann, 2004
- Genus Auriculatus Reis & Navia in Reis, Gondim, Flechtmann & Navia, 2014
- Genus Azimaberoptus Chandrapatya in Chandrapatya & Boczek, 1993 accepted as Aculops Keifer, 1966
- Genus Bachinius Chandrapatya & Boczek, 2000
- Genus Baileyna Keifer, 1954
- Genus Bakeriella Chakrabarti & Mondal, 1982
- Genus Bamboocarus Chandrapatya & Boczek, 2002
- Genus Bambusacarus Chetverikov, Amrine & Ripka, 2020
- Genus Bangkophyes Boczek & Chandrapatya, 2001
- Genus Bangphracarus Chandrapatya, Konvipasruang & Amrine, 2014
- Genus Bariella de Lillo, 1988
- Genus Bischofius Boczek & Chandrapatya, 2000
- Genus Boczekiana Petanovic, 2001
- Genus Brachendus Keifer, 1964
- Genus Brevishieldophyes Chakrabarti & Pandit, 2019
- Genus Brionesa Keifer, 1966
- Genus Calacarus Keifer, 1940
- Genus Calareolata Han & Zhang, 2019
- Genus Calepitrimerus Keifer, 1938
- Genus Calesalquia Xue, Wang, Song & Hong, 2009
- Genus Caliphytoptus Keifer, 1938
- Genus Calliparus Li, Wang & Wei, 2010
- Genus Callyntrotus Nalepa, 1894
- Genus Calpentaconvexus Li, Wang & Wei, 2007
- Genus Calvittacus Xue, Song & Hong, 2006
- Genus Caroloptes Keifer, 1940
- Genus Casearius Boczek & Chandrapatya, 2001
- Genus Catachela Keifer, 1969 †
- Genus Cathetacarus Ozman-Sullivan, Amrine & Walter, 2006
- Genus Cecidobia Banks, 1905 accepted as Aculops Keifer, 1966
- Genus Cecidodectes Nalepa, 1918
- Genus Cecidophyes Nalepa, 1887
- Genus Cecidophyopsis Keifer, 1959
- Genus Cecidoptes Amerling, 1861 accepted as Acalitus Keifer, 1965
- Genus Cecydoptes Amerling, 1859 accepted as Acalitus Keifer, 1965
- Genus Celepitrimerus Zoological Record accepted as Calepitrimerus Keifer, 1938
- Genus Cenaca Keifer, 1972
- Genus Cenalox Keifer, 1961
- Genus Cercodes Keifer, 1960
- Genus Cereusacarus Xue, Wang, Song & Hong, 2009
- Genus Channabasavanella Bagdasaryan, 1975 accepted as Keiferana Channabasavanna, 1967
- Genus Channabasavannella Bagdasaryan, 1975 accepted as Keiferana Channabasavanna, 1967
- Genus Chiacaphyllisa Li, Wang & Wei, 2010
- Genus Chonburinus Boczek & Chandrapatya, 2000
- Species Chonburinus erythrini Boczek & Chandrapatya, 2000
- Genus Chrecidus Manson, 1984
- Genus Circaces Keifer, 1978
- Genus Cisaberopterus Zoological Record accepted as Cisaberoptus Keifer, 1966
- Genus Cisaberoptes Keifer, 1966 accepted as Cisaberoptus Keifer, 1966
- Genus Cisaberoptus Keifer, 1966
- Genus Colomerus Newkirk & Keifer, 1971
- Genus Colopodacus Keifer, 1960
- Genus Combretus Boczek & Chandrapatya, 2001
- Genus Convexmitrata Tan, Zhao & Wang, 2019
- Genus Coptophylla Keifer, 1944
- Genus Cosella
- Genus Cosetacus Keifer, 1966
- Genus Cosetarecus Zoological Record accepted as Costarectus Meyer & Ueckermann, 1995
- Genus Costarectus Meyer & Ueckermann, 1995
- Genus Costolobus Chetverikov & Craemer in Chetverikov et al., 2017
- Genus Cothrix Reis & Návia in Reis et al., 2010
- Genus Criocarpus Boczek & Chandrapatya, 2000
- Genus Criophyes Boczek, 1992 accepted as Cecidodectes Nalepa, 1918
- Genus Criotacus Keifer, 1963
- Genus Cupacarus Keifer, 1943
- Genus Cymeda Manson & Gerson, 1986
- Genus Cymoptus
- Genus Daengarus Konvipasruang & Chandrapatya, 2018
- Genus Dechela Keifer, 1965
- Genus Dengella Kuang & Gong in Kuang, Gong & Luo, 1998
- Genus Dichopelmus Keifer, 1960
- Genus Dicolopodacus Huang, 2001
- Genus Dicrothrix Keifer, 1966
- Genus Dicruvasates Abou-Awad & El-Borolossy, 1995
- Genus Diphytoptus Huang, 1991
- Genus Diptilostatus Flechtmann in Flechtmann & De Moraes, 2003
- Genus Disella Newkirk & Keifer, 1975
- Genus Distaceria Flechtmann, Amrine & Stasny, 1995
- Genus Ditrymacus Keifer, 1960
- Genus Echinacrus Keifer, 1966
- Genus Ectomerus Newkirk & Keifer, 1975
- Genus Ekaphyes Boczek & Chandrapatya, 2000
- Genus Epicecidophyes Mondal & Chakrabarti, 1982
- Genus Epiphytimerus Mohanasundaram, 1985 accepted as Abacarus Keifer, 1944
- Genus Epitrimerus Nalepa, 1898
- Genus Eriophycesa Koçak & Kemal, 2008
- Genus Eriophyes von Siebold, 1836
- Genus Esalquia Flechtmann, 2002
- Genus Euterpia Navia & Flechtmann, 2005
- Genus Fairina Qin, Yang & Wang, 2022
- Genus Flechtmannia Keifer, 1979
- Genus Flexipalpus Scheuten, 1857 accepted as Eriophyes von Siebold, 1836
- Genus Floracarus Keifer, 1953
- Genus Fujianacarus Song, Xue & Hong, 2008
- Genus Gammaphytoptus Keifer, 1939
- Genus Garcinyes Boczek & Chandrapatya, 2000
- Genus Gilarovana Mitrofanov & Sharonov, 1987
- Genus Gilarovella Mitrofanov, Sekerskaya & Sharonov, 1983 accepted as Gilarovana Mitrofanov & Sharonov, 1987
- Genus Glabrisceles Navia & Flechtmann, 2002
- Genus Glossilus Navia & Flechtmann, 2000
- Genus Glyptacus Keifer, 1953
- Genus Grandiscapitis Zhang & Xue, 2019
- Genus Gymnaceria Oliveira, Rodrigues & Flechtmann, 2012
- Genus Hainanarus Xue, Cheng & Hong, 2009
- Genus Hemiscolocenus Mohanasundaram, 1986
- Genus Heterotergum Keifer, 1955
- Genus Hornophyes Mohanasundaram, 1994
- Genus Huangiella Kammerer, 2006 accepted as Tumoris Huang, 2001
- Genus Indonotalox Ghosh & Chakrabarti, 1982
- Genus Indonotolox Ghosh & Chakrabarti, 1982 accepted as Indonotalox Ghosh & Chakrabarti, 1982
- Genus Indosetacus Ghosh & Chakrabarti, 1987
- Genus Indotegolophus Chakrabarti & Mondal in Chakrabarti, Mondal & Roy, 1980
- Genus Isoannulus Chakrabarti & Pandit, 2009
- Genus Jaranasia Chandrapatya & Boczek, 2000
- Genus Jiangsuacarus Xue, Wang, Song & Hong, 2009
- Genus Johnella Keifer, 1959
- Genus Jutarus Boczek & Chandrapatya, 1989
- Genus Juxtacolopodacus Flechtmann & de Queiroz, 2010
- Genus Kanphra Konvipasruang & Chandrapatya, 2018
- Genus Kasetsarus Chandrapatya in Chandrapatya & Boczek, 1997 accepted as Tetra Keifer, 1944
- Genus Keiferana Channabasavanna, 1967
- Genus Keiferella Boczek, 1964
- Genus Keiferella Channabasavanna, 1966 accepted as Keiferana Channabasavanna, 1967
- Genus Keiferophyes Mohanasundaram, 1983
- Genus Knorella Keifer, 1975
- Genus Kolacarus Boczek in Boczek & Chandrapatya, 1998
- Genus Kosacarus Chandrapatya, Konvipasruang & Amrine, 2014
- Genus Kuangella Wei in Wei & Qin, 2002
- Genus Kyllocarus Wang, Wei & Yang, 2012
- Genus Lanyuii Wang & Huang, 2012
- Genus Latinotus Boczek, 1960
- Genus Latitudo Huang, 2001
- Genus Leipothrix Keifer, 1966 † accepted as Flechtmannia Keifer, 1979
- Genus Liparus Boczek in Boczek & Chandrapatya, 1996
- Genus Liroella Amrine, 1996
- Genus Litaculus Manson, 1984
- Genus Longisolenidionus Xue, Guo & Hong, 2013
- Genus Longitibisetacus Lin & Kuang, 2001
- Genus Lovonotus Hatzinikolis, 1982
- Genus Mangalaus Menon, 2011
- Genus Mangophyes Chandrapatya & Boczek, 2001
- Genus Medicavarus Liu, Tan, Mo & Wang, 2021
- Genus Mesalox Keifer, 1962
- Genus Mesoshieldophyes Chakrabarti & Pandit, 2019
- Genus Metaculus Keifer, 1962
- Genus Metaplatyphtoptus Hong & Kuang, 1989 accepted as Metaplatyphytoptus Hong & Kuang, 1989
- Genus Metaplatyphytoptus Hong & Kuang, 1989
- Genus Meyerella Amrine, Stasny & Flechtmann, 2003
- Genus Milleniophyes Chandrapatya & Boczek, 2000 accepted as Neserella Smith-Meyer & Ueckermann, 1989
- Genus Mitratus Kuang in Kuang & Luo, 1997
- Genus Monaulax Nalepa, 1892 accepted as Monochetus Nalepa, 1898
- Genus Monochetus Nalepa, 1898
- Genus Monotrymacus Mohanasundaram, 1982
- Genus Montrimacus Zoological Record accepted as Monotrymacus Mohanasundaram, 1982
- Genus Nacerimina Keifer, 1979
- Genus Namengia Zhao, Li & Wang, 2018
- Genus Nameriophyes Xue & Zhang, 2008
- Genus Nasuchus Navia & Flechtmann, 2002
- Genus Navia Nemesio, 2006
- Genus Neoacaphyllisa Kuang & Hong, 1989
- Genus Neocalacarus Channabasavanna, 1966
- Genus Neocalepitrimerus Xie, Wei & Qin, 2007
- Genus Neocecidophyes Mohanasundaram, 1980
- Genus Neocecidophypes accepted as Neocecidophyes Mohanasundaram, 1980
- Genus Neocolopodacus Mohanasundaram, 1980
- Genus Neocosella Mohanasundaram, 1981
- Genus Neocupacarus Das & Chakrabarti, 1985
- Genus Neocymoptus Lin, Jin & Kuang, 1997
- Genus Neodactylus Umapathy, 1999
- Genus Neodichopelmus Manson, 1973 †
- Genus Neodicrothrix Mohanasundaram, 1984
- Genus Neodirothrix Mohanasundaram, 1985 accepted as Neodicrothrix Mohanasundaram, 1984
- Genus Neodisella Li & Wei, 2006
- Genus Neoepitrimerus Kuang & Li in Kuan, Li & Shen, 1994
- Genus Neofloracarus Abou-Awad & El-Banhawy, 1992 accepted as Disella Newkirk & Keifer, 1975
- Genus Neoknorella Kuang & Feng, 1989 accepted as Knorella Keifer, 1975
- Genus Neoleipothrix Wei & Kuang, 1993
- Genus Neomesalox Mohanasundaram, 1983
- Genus Neometaculus Mohanasundaram, 1983
- Genus Neooxycenus Abou-Awad, 1982
- Genus Neopentamerus Kuang in Kuang, Lin & Geng, 1993
- Genus Neophantacrus Mohanasundaram, 1981
- Genus Neophytoptus Mohanasundaram, 1981
- Genus Neoshevtchenkella Kuang & Zhuo, 1989
- Genus Neotegonotus Newkirk & Keifer, 1971
- Genus Neotetra Haiyuan, 1998
- Genus Neovittacus Xue, Wang, Song & Hong, 2009
- Genus Neserella Smith-Meyer & Ueckermann, 1989
- Genus Nonthaburinus Chandrapatya in Chandrapatya & Boczek, 1996
- Genus Notacaphylla Mohanasundaram & Singh, 1988
- Genus Notaceria Mohanasundaram & Muniappan, 1990
- Genus Notallus Keifer, 1975 †
- Genus Notalox Keifer, 1961
- Genus Nothacus Manson, 1984
- Genus Nothopoda Keifer, 1951
- Genus Notoceria Mohanasundaram & Muniappan, 1990 accepted as Notaceria Mohanasundaram & Muniappan, 1990
- Genus Notostrix Keifer, 1963
- Genus Obesophyes Umapathy, 1999
- Genus Oxycenus Keifer, 1961
- Genus Oxypleurites Nalepa, 1891 accepted as Tegonotus Nalepa, 1890
- Genus Pangacarus Manson, 1984
- Genus Paniculatus Boczek & Chandrapatya, 2000
- Genus Paracalacarus Keifer, 1962
- Genus Paracaliphytoptus Xue, Wang, Song & Hong, 2009
- Genus Paracaphylla Mohanasundaram, 1983
- Genus Paracaridilophus Xue, Cheng & Hong, 2011
- Genus Paraciota Mohanasundaram, 1985
- Genus Paracolomerus Keifer, 1975
- Genus Paracolopodacus Kuang & Huang, 1994
- Genus Paraepitrimerus Xue & Hong, 2005
- Genus Paraisoannulus Xue, Cheng & Hong, 2011
- Genus Paraphetehaburus Xue, Song, Amrine & Hong, 2007
- Genus Paraphyllocoptes Wei, Xie & Chen, 2006
- Genus Paraphytoptella Keifer, 1959
- Genus Paraphytoptus Nalepa, 1896
- Genus Parategonotus Kuang, 1991
- Genus Paratetra Channabasavanna, 1966 †
- Genus Pareria Keifer, 1952
- Genus Parinarus Chandrapatya & Boczek, 2000
- Genus Parneometaculus Yuan & Xue, 2019
- Genus Parulops Manson, 1984
- Genus Pedaculops Manson, 1984
- Genus Pentacecidophyes Xue, Cheng & Hong, 2011
- Genus Pentaconvexus Huang, 2001
- Genus Pentamerus Roivainen, 1951 accepted as Echinacrus Keifer, 1966
- Genus Phaicus Konvipasruang, Chandrapatya & Amrine, 2012
- Genus Phaulacus Keifer, 1961
- Genus Phetehaburus Amrine, Stasny & Flechtmann, 2003
- Genus Phyllocoptacus Mohanasundaram, 1985
- Genus Phyllocoptes Nalepa, 1889
- Genus Phyllocoptruta Keifer, 1938
- Genus Phylloptus Amerling, 1858 † accepted as Phytoptus Dujardin, 1851
- Genus Phytocoptella Newkirk & Keifer, 1971 accepted as Phytoptus Dujardin, 1851
- Genus Phytocoptes Nalepa, 1891
- Genus Phytocoptes Donnadieu, 1876 accepted as Eriophyes von Siebold, 1836
- Genus Phytoptochetes Nalepa, 1918 accepted as Phytoptochetus Nalepa, 1917
- Genus Phytoptochetus Nalepa, 1917
- Genus Phytoptus Dujardin, 1851
- Genus Plancorpus Liu, Yao, Yang & Wang, 2022
- Genus Plataculus Keifer, 1961 accepted as Tetraspinus Boczek, 1961
- Genus Platyphytoptus Keifer, 1938
- Genus Porcupinotus Mohanasundaram, 1985
- Genus Porosus Meyer & Ueckermann, 1995
- Genus Proartacris Mohanasundaram, 1985
- Genus Procalacarus Mohanasundaram, 1983
- Genus Proiectus Huang, 2001
- Genus Prominens Huang & Wang, 2004
- Genus Proneotegonotus Mohanasundaram, 1983
- Genus Prophyllocoptes Mohanasundaram, 1985
- Genus Protumescoptes Pandit & Chakrabarti, 2001
- Genus Pseudocalepitrimerus Umapathy, 1999
- Genus Pseudocolopodacus Kuang, 1997
- Genus Pseudojohnella Keifer, 1961 accepted as Achaetocoptes Farkas, 1961
- Genus Pseudotagmus Chetverikov, Craemer & Bolton, 2017
- Genus Pyelotus Smith, 1992
- Genus Quadratum Huang & Wang, 2004
- Genus Quintalitus Smith-Meyer, 1989
- Genus Ramaculus Manson, 1984
- Genus Randius Boczek & Chandrapatya, 2000
- Genus Ranongus Chandrapatya & Boczek, 2000
- Genus Reckella Bagdasaryan, 1975 †
- Genus Rectalox Manson, 1984
- Genus Reginesus Reis & Navia, 2012
- Genus Rhombacus Keifer, 1965
- Genus Rhycanonaequitas Liu, Tan, Mo & Wang, 2021
- Genus Rhyncadicrus Reis & Návia in Reis et al., 2010
- Genus Rotsukhona Konvipasruang, Chandrapatya & Amrine, 2019
- Genus Schevtchenkella Zoological Record accepted as Shevtchenkella Bagdasarian, 1978
- Genus Schizacea Keifer, 1977
- Genus Schizoempodium Oldfield, Hunt & Gispert, 1998
- Genus Scoletoptus Smith, 1992
- Genus Scolocenus Keifer, 1962
- Genus Scolotosus Flechtmann & Keifer, 1971
- Genus Scolotosus Flechtmann & Keifer, 2010
- Genus Scutalophus Knihinicki & Boczek, 2003
- Genus Setosecundus Huang & Wang, 2004
- Genus Shaanxicarus Xue, Wang, Song & Hong, 2009
- Genus Shevtchenkella Bagdasarian, 1978
- Genus Shrekin Britto & Navia, 2007
- Genus Siamina Boczek in Chandrapatya & Boczek, 1993
- Genus Siamphyes Boczek & Chandrapatya, 2000
- Genus Sinacus Hong & Kuang, 1989
- Genus Siracharus Chandrapatya & Boczek, 2000
- Genus Soleula Huang, 2001
- Genus Spatha Huang, 2001
- Genus Spinacarus Xue, Wang, Song & Hong, 2009
- Genus Spinacus Keifer, 1979
- Genus Spinaetergum Hong & Kuang, 1989
- Genus Spinaeterum Hong & Kuang, 1989 accepted as Spinaetergum Hong & Kuang, 1989
- Genus Stenacis Keifer, 1970
- Genus Stenacus Keifer, 1970 accepted as Stenacis Keifer, 1970
- Genus Subaequalitas Huang, 2001
- Genus Subductophyes Sur & Chakrabarti, 2017
- Genus Surapoda Boczek & Chandrapataya, 1989
- Genus Taicolopodacus Huang & Wang, 2009
- Genus Taijutarus Huang & Wang, 2004
- Genus Taspinus Chandrapatya in Chandrapatya & Boczek, 1991 accepted as Spinacus Keifer, 1979
- Genus Tecarus Flechtmann, 2000
- Genus Tegelophus Zoological Record accepted as Tegolophus Keifer, 1961
- Genus Tegnacus Pye, 2012
- Genus Tegolophus Keifer, 1961
- Genus Tegolotus Zoological Record accepted as Tegonotus Nalepa, 1890
- Genus Tegonotus Nalepa, 1890
- Genus Tegophyes Chandrapatya & Boczek, 2001
- Genus Tegoprionus Keifer, 1961
- Genus Tergamplum Chakrabarti & Pandit, 2009
- Genus Tergilatus Meyer & Ueckermann, 1995
- Genus Tetra Keifer, 1944
- Genus Tetrameracarus Huang, 2001
- Genus Tetrapoda Bach, 1870 accepted as Phytoptus Dujardin, 1851
- Genus Tetraspinus Boczek, 1961
- Genus Thacra Keifer, 1978
- Genus Thaicesa Koçak & Kemal, 2008
- Genus Thamnacus Keifer, 1944
- Genus Thiracarus Chandrapatya in Boczek & Chandrapatya, 1998 accepted as Knorella Keifer, 1975
- Genus Trichostigma Gerber, 1902 accepted as Aceria Keifer, 1944
- Genus Trimeracarus Farkas, 1963
- Genus Trimerus Nalepa, 1892 accepted as Epitrimerus Nalepa, 1898
- Genus Trusmadius Yuan, Yin & Xue, 2018
- Genus Tumescoptella Chetverikov, Craemer & Neser, 2018
- Genus Tumescoptes Keifer, 1939
- Genus Tumoris Huang, 2001
- Genus Ursynovia Boczek & Szymkowiak, 1997
- Genus Vasates Shimer, 1869
- Genus Vasatis Murray, 1877 accepted as Vasates Shimer, 1869
- Genus Viginticus Duarte & Navia, 2020
- Genus Visinus Chandrapatya in Chandrapatya & Boczek, 1996
- Genus Vittacus Keifer, 1969
- Genus Wanleelagus Boczek in Chandrapatya & Boczek, 1997
- Genus Xinglongarus Xue, Cheng & Hong, 2012
- Family Eriorhynchidae Qin & Halliday, 1997
- Family Erythracaridae Oudemans, 1936 accepted as Anystidae Oudemans, 1902
- Family Erythraeidae Robineau-Desvoidy, 1828
- Family Erythreidae Robineau-Desvoidy, 1828 accepted as Erythraeidae Robineau-Desvoidy, 1828
- Family Eupalopsellidae Willmann, 1952
- Family Eupatrellidae Viets, 1935
- Family Eupodidae C.L. Koch
- Family Eutrombidiidae Thor, 1935
- Family Eylaidae Leach, 1815
- Family Feltriidae Viets, 1926
- Family Ferradasiidae Cook, 1980
- Family Foreliidae Thor, 1923 accepted as Pionidae Thor, 1900
- Family Frontipodopsidae Viets, 1931
- Family Grandjeanicidae Kethley, 1977
- Family Gretacaridae Viets, 1978
- Family Halacaridae Murray, 1877
- Family Halcaridae accepted as Halacaridae Murray, 1877
- Family Harpagopalpidae Viets, 1924
- Family Harpirhynchidae Dubinin, 1957
- Family Harpyrhynchidae Dubinin, 1957 accepted as Harpirhynchidae Dubinin, 1957
- Family Heterocheylidae Trägårdh, 1950
- Family Homocaligidae Wood, 1969
- Family Hungarohydracaridae Motas & Tanasachi, 1959
- Family Hungarohydracharidae accepted as Hungarohydracaridae Motas & Tanasachi, 1959
- Family Hybalicidae Theron, 1974 accepted as Lordalychidae Grandjean, 1939
- Family Hydrachnidae Leach, 1815
- Family Hydrochoreutidae Viets, 1942 accepted as Pionidae Thor, 1900
- Family Hydrodromidae Viets, 1936
- Family Hydrovolziidae Thor, 1905
- Family Hydryphantidae Piersig, 1896
- Family Hygrobatidae C.L. Koch, 1842
- Family Iolinidae Pritchard, 1956
- Family Ioliniidae accepted as Iolinidae Pritchard, 1956
- Family Johnstonianidae Thor, 1935
- Family Kantacaridae Imamura, 1959
- Family Krendowskiidae Viets, 1926
- Family Labidostomatidae accepted as Labidostommatidae Oudemans, 1906
- Family Labidostommatidae Oudemans, 1906
- Family Labidostommidae Oudemans, 1906 accepted as Labidostommatidae Oudemans, 1906
- Family Laversiidae Cook, 1955
- Family Lebertiidae Thor, 1900
- Family Leeuwenhockiidae accepted as Leeuwenhoekiidae Womersley, 1944
- Family Leeuwenhoekiidae Womersley, 1944
- Family Lethaxonidae Cook, Smith & Harvey, 2000
- Family Limnesiidae Thor, 1900
- Family Limnocharidae Grube, 1859
- Family Limnohalacaridae
- Family Linotetranidae Baker & Pritchard, 1953
- Family Ljaniidae Thor, 1929 accepted as Aturidae Thor, 1900
- Family Lordalychidae Grandjean, 1939
- Family Lymnesiidae accepted as Limnesiidae Thor, 1900
- Family Mamersopsidae Viets, 1914 accepted as Anisitsiellidae Koenike, 1910
- Family Mecognathidae Gerson & Walter, 1998
- Family Microdispidae Cross, 1965
- Family Microdispodidae accepted as Microdispidae Cross, 1965
- Family Microereunetidae Bottazzi, 1950 accepted as Ereynetidae Oudemans, 1931
- Family Micropsammidae Y. Coineau & P. Theron, 1983
- Family Microtrombidiidae Thor, 1935
- Family Mideidae Thor, 1911
- Family Mideopsidae Koenike, 1910
- Family Momoniidae Viets, 1926
- Family Myobiidae Mégnin, 1877
- Family Nalepellidae Newkirk & Kiefer, 1975 accepted as Phytoptidae Murray, 1877
- Family Nanorchestidae Grandjean, 1937
- Family Nematalychidae accepted as Nematalycidae Strenzke, 1954
- Family Nematalycidae Strenzke, 1954
- Family Neoacaridae Motas & Tanasachi, 1947
- Family Neopygmephoridae Cross, 1965
- Family Neothrombidiidae accepted as Neothrombiidae Feider, 1955
- Family Neothrombiidae Feider, 1955
- Family Neotorrenticolidae Lundblad, 1936 accepted as Limnesiidae Thor, 1900
- Family Neotrombidiidae Feider, 1959
- Family Neumaniidae Thor, 1923 accepted as Unionicolidae Oudemans, 1909
- Family Nicoletiellidae Canestrini, 1891 accepted as Labidostommatidae Oudemans, 1906
- Family Nilotoniidae Viets, 1929
- Family Nipponacaridae Imamura, 1959
- Family Oehserchestidae Kethley, 1977
- Family Omartacaridae Cook, 1963
- Family Ophioptidae Southcott, 1956
- Family Oxidae Viets, 1926
- Family Pachygnathidae Kramer, 1877 accepted as Alycidae Canestrini & Fanzago, 1877
- Family Paratydeidae Baker, 1949
- Family Pediculochelidae Lavoipierre, 1946
- Family Pentapalpidae Olivier & Theron, 2000
- Family Penthaleidae Oudemans, 1931
- Family Penthalodidae Thor, 1933
- Family Pezidae M.S. Harvey, 1990
- Family Phytoptidae Murray, 1877
- Family Piersigiidae Oudemans, 1902
- Family Pionidae Thor, 1900
- Family Podapolipidae Ewing, 1922
- Family Podothrombiidae Thor, 1935
- Family Polyxohalacaridae Motas, 1972 accepted as Hydrovolziidae Thor, 1905
- Family Pomerantziidae Baker, 1949
- Family Pomerantzioidea incertae sedis
- Family Pontarachnidae Koenike, 1910
- Family Proteonematalycidae Kethley, 1989
- Family Proterorhagiidae Lindquist & Palacios-Vargas, 1991
- Family Pseudocheylidae Oudemans, 1909
- Family Psorergatidae Dubinin in Bregetova, Bulanova-Zakhvatkina, Volgin, Dubinin, Zakhvatkin, Zemskaya, Lange, Pavlovskii, Serdyukova & Shluger, 1955
- Family Pterygosomatidae Oudemans, 1910
- Family Pterygosomidae Oudemans, 1910 accepted as Pterygosomatidae Oudemans, 1910
- Family Pyemotidae Oudemans, 1937
- Family Pygmephoridae Cross, 1965
- Family Raphignathidae Kramer, 1877
- Family Resinacaridae Mahunka, 1976
- Family Rhagidiidae Oudemans, 1922
- Family Rhynchohydracaridae Lundblad, 1936
- Family Rutripalpidae Sokolow, 1934
- Family Saxidromidae Coineau, 1974 accepted as Adamystidae Cunliffe, 1957
- Family Scutacaridae Oudemans, 1916
- Family Siteroptidae Mahunka, 1970
- Family Smarididae Kramer, 1878
- Family Sperchonidae Thor, 1900 accepted as Sperchontidae Thor, 1900
- Family Sperchontidae Thor, 1900
- Family Sphaerolichidae Berlese, 1913
- Family Stigmaeidae Oudemans, 1931
- Family Strandtmanniidae M. Zacharda, 1979
- Family Stygomomonidae Szalay, 1943 accepted as Momoniidae Viets, 1926
- Family Stygothrombiidae Thor, 1935
- Family Stygotoniidae Cook, 1992
- Family Syringophilidae Lavoipierre, 1953
- Family Tanaupodastridae Feider, 1959 accepted as Tanaupodidae Thor, 1935
- Family Tanaupodidae Thor, 1935
- Family Tarsocheylidae Atyeo & Baker, 1964
- Family Tarsonemidae Kramer, 1877
- Family Teneriffiidae Thor, 1911
- Family Tenuipalpidae Berlese, 1913
- Family Teratothyadidae Viets, 1929
- Family Terpnacaridae Grandjean, 1939
- Family Tetranychidae Donnadieu, 1875
- Family Tetranychoidea incertae sedis
- Family Teutonidae Koenike, 1910 accepted as Teutoniidae Koenike, 1910
- Family Teutoniidae Koenike, 1910
- Family Thermacaridae Sokolow, 1927
- Family Thrombellidae Zoological Record, 1958 accepted as Trombellidae Leach, 1815
- Family Thrombidiidae accepted as Leeuwenhoekiidae Womersley, 1944
- Family Torrenticolidae Piersig, 1902
- Family Triasacaridae Lindquist & Sidorchuk in Sidorchuk et al., 2015 †
- Family Trichthoniidae Lee, 1982
- Family Trombellidae Leach, 1815
- Family Trombiculidae Ewing, 1929
- Family Trombidiidae Leach, 1815
- Family Trombidioidea incertae sedis
- Family Tuckerellidae Baker & Pritchard, 1953
- Family Tydeidae Kramer, 1877
- Family Uchidastygacaridae Imamura, 1956
- Family Ungarohydracaridae accepted as Hungarohydracaridae Motas & Tanasachi, 1959
- Family Unionicolidae Oudemans, 1909
- Family Vatacaridae Southcott, 1957 accepted as Trombiculidae Ewing, 1929
- Family Walchiidae Ewing, 1946
- Family Wettinidae Cook, 1956
- Family Xenocaligonellidae Gonzalez, 1978 accepted as Xenocaligonellididae Gonzalez, 1978
- Family Xenocaligonellididae Gonzalez, 1978
- Family Yurebillidae Southcott, 1996
- Family Zelandothyadidae Cook, 1983
- Order Amblypygi
- Order Arachnida (awaiting allocation)
- Order Arachnida incertae sedis
- Order Araneae
- Order Architarbida †
- Order Astigmata
- 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 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 †
- 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 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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