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
- Order Haptopodida †
- Order Holothyrida
- Order Ixodida
- Order Mesostigmata
- Order Opilioacarida
- Order Opiliocariformes
- Order Opiliones
- Order Opilionida accepted as Opiliones
- Order Oribatida
- Family Acaronychidae Grandjean, 1932
- Family Aceremaeidae accepted as Arceremaeidae Balogh, 1972
- Family Achipteriidae Thor, 1929
- Family Adelphacaridae Grandjean, 1954
- Family Adhaesozetidae Hammer, 1973
- Family Adhesozetidae Hammer, 1966 accepted as Adhaesozetidae Hammer, 1973
- Family Aleurodamaeidae Paschoal & Johnston, 1984
- Family Aleurodameidae Paschoal & Johnston, 1982 accepted as Aleurodamaeidae Paschoal & Johnston, 1984
- Family Allonothridae Lee, 1985 accepted as Trhypochthoniidae Willmann, 1931
- Family Ameridae Bulanova-Zakhvatkina, 1957
- Family Amerobelbidae Grandjean, 1954
- Family Amerobelboidea incertae sedis
- Family Ameronothridae Willmann, 1931
- Family Ametroproctidae Subías, 2004
- Family Anderemaeidae Balogh, 1972
- Family Aphelacaridae Grandjean, 1954
- Family Aquanothridae Engelbrecht, 1975 accepted as Ameronothridae Willmann, 1931
- Family Arborichthoniidae Balogh & Balogh, 1992
- Family Arceremaeidae Balogh, 1972
- Family Archaeorchestidae Arillo & Subias, 2000 †
- Family Archeonothridae Grandjean, 1932
- Family Archoplophoridae Grandjean, 1965
- Family Areozetidae Balogh & Balogh, 1984
- Family Aribatidae Aoki, Takaku & Ito, 1994
- Family Astegistidae Balogh, 1961
- Family Atopochthoniidae Grandjean, 1948
- Family Austrachipteriidae Luxton, 1985
- Family Autognetidae Grandjean, 1960
- Family Banksinomidae Kunst, 1971
- Family Basilobelbidae Balogh, 1961
- Family Belbidae Willmann, 1931 accepted as Damaeidae Berlese, 1896
- Family Belbodamaeidae Bulanova-Zachvatkina, 1967 accepted as Damaeidae Berlese, 1896
- Family Birobatidae Balogh & Balogh, 1984
- Family Borhidiidae Balogh, 1983
- Family Brachychthoniidae Thor, 1934
- Family Brazilobatidae Koçak & Kemal, 2008
- Family Caleremaeidae Grandjean, 1965
- Family Caloppiidae Balogh, 1961 accepted as Zetorchellidae Özdikmen, 2008
- Family Camisiidae Oudemans, 1900
- Family Campbellobatidae Aoki, 1974
- Family Carabocepheidae Mahunka, 1986
- Family Carabodidae C.L. Koch, 1837
- Family Carbolohmanniidae Sidorchuk & Robin in Robin et al., 2016 †
- Family Cepheidae Berlese, 1896 accepted as Compactozetidae Luxton, 1988
- Family Ceratokalummidae Balogh, 1970
- Family Ceratoppiidae Kunst, 1971
- Family Ceratozetidae Jacot, 1925
- Family Ceresellidae Pavlitshenko, 1993
- Family Cerocepheidae Subías, 2004
- Family Chamobatidae Grandjean, 1954
- Family Charassobatidae Grandjean, 1958
- Family Chaunoproctidae Balogh, 1961
- Family Chaviniidae Balogh, 1983
- Family Collohmanniidae Grandjean, 1958
- Family Compactozetidae Luxton, 1988
- Family Cosmochthoniidae Grandjean, 1947
- Family Crassoribatulidae
- Family Crotonidae accepted as Crotoniidae Thorell, 1876
- Family Crotoniidae Thorell, 1876
- Family Ctenacaridae Grandjean, 1954
- Family Ctenobelbidae Grandjean, 1965
- Family Cuneoppidae Balogh, 1983 accepted as Cuneoppiidae Balogh, 1983
- Family Cuneoppiidae Balogh, 1983
- Family Cymbaeremaeidae Sellnick, 1928
- Family Cymbaeremeidae Willmann, 1931 accepted as Cymbaeremaeidae Sellnick, 1928
- Family Damaeidae Berlese, 1896
- Genus Acanthobelba Enami & Aoki, 1993
- Genus Adamaeus Norton, 1978
- Genus Akrodamaeus Norton, 1979
- Genus Allobelba Kunst, 1961
- Genus Amaeus Gervais, 1844 accepted as Damaeus Koch in Panzer, 1835
- Genus Arboribelba Miko, 2021
- Genus Belba von Heyden, 1826
- Genus Belbites Pampaloni, 1902 †
- Genus Belbodamaeus Bulanova-Zachvatkina, 1960
- Genus Caenobelba Norton, 1980
- Genus Coronabelba Kolesnikov & Miko, 2022
- Genus Costeremus Aoki, 1970
- Genus Damaeobelba Sellnick, 1928
- Genus Damaeus Koch in Panzer, 1835
- Genus Dameobelba Sellnick, 1928
- Genus Damoeus Canestrini & Fanzago, 1877 accepted as Damaeus Koch in Panzer, 1835
- Genus Damoeus Berlese, 1883 accepted as Damaeus Koch in Panzer, 1835
- Genus Dasybelba Woolley & Higgins, 1979
- Genus Dyobelba Norton, 1979
- Genus Epidamaeus Bulanova-Zakhvatkina, 1957
- Genus Eubelba Miko, 2021
- Genus Eudamaeus Pérez-Ingio, 1987 accepted as Damaeus Koch in Panzer, 1835
- Genus Heterodamaeus Mihelčič, 1964 accepted as Damaeus Koch in Panzer, 1835
- Genus Hungarobelba Balogh, 1943
- Genus Hypodamaeus Bulanova-Zakhvatkina, 1957 accepted as Damaeus Koch in Panzer, 1835
- Genus Lanibelba Norton, 1980
- Genus Metabelba Grandjean, 1936
- Genus Metabelbella Bulanova-Zakhvatkina, 1957
- Genus Metarbelba Zoological Record accepted as Metabelba Grandjean, 1936
- Genus Mirobelba Pérez-Iñigo & Pena, 1994
- Genus Neobelba Bulanova-Zachvatkina, 1967
- Genus Nododamaeus Hammer, 1977 †
- Genus Nortonbelba Bernini, 1980
- Genus Oribata Latreille, 1802 accepted as Lucoppia Berlese, 1908
- Genus Oribates Dugès, 1834 accepted as Lucoppia Berlese, 1908
- Genus Oribita Samouelle, 1819 accepted as Lucoppia Berlese, 1908
- Genus Orobates Agassiz, 1846 accepted as Lucoppia Berlese, 1908
- Genus Orybates Laboulbène, 1851 accepted as Lucoppia Berlese, 1908
- Genus Parabelbella Bulanova-Zachvatkina, 1967 †
- Genus Paradamaeus Bulanova-Zakhvatkina, 1957
- Genus Paradyobelba Miko & Ermilov, 2021 accepted as Parabelbella Bulanova-Zachvatkina, 1967 †
- Genus Parametabelba Mihelčič, 1964 accepted as Metabelba Grandjean, 1936
- Genus Pateribelba Mourek, Miko & Bernini, 2011 accepted as Metabelba Grandjean, 1936
- Genus Piribelba Miko, 2021
- Genus Porobelba Grandjean, 1936
- Genus Prometabelba Miko, 2024
- Genus Protobelba Norton, 1979
- Genus Protodamaeus Subías, 2019
- Genus Quatrobelba Norton, 1980
- Genus Spatiodamaeus Bulanova-Zakhvatkina, 1957
- Genus Spinibdella Thor, 1930
- Species Spinibdella ampulla Wallace & Mahon, 1973
- Species Spinibdella atyeoi Gupta & Paul, 1985
- Species Spinibdella bioculata Swift & Goff, 1987
- Species Spinibdella cornini (Baker & Balogh, 1944)
- Species Spinibdella corticis (Ewing, 1909)
- Species Spinibdella cronini (Baker & Balock, 1944)
- Species Spinibdella depressa (Ewing, 1909)
- Species Spinibdella howarthi Swift & Goff, 1987
- Species Spinibdella lignicola (Canestrini, 1886)
- Species Spinibdella longistriata Tseng, 1978
- Species Spinibdella novemsetosa Tseng, 1978
- Species Spinibdella ornata Athyeo, 1960
- Species Spinibdella rapida Kuznetsov & Livshits, 1979
- Species Spinibdella reducta Thor, 1930
- Species Spinibdella smileyi Tseng, 1978
- Species Spinibdella tadjikistanica Kuznetsov, 1984
- Species Spinibdella tenuirostris (Ewing, 1917)
- Species Spinibdella thori (Meyer & Ryke, 1959)
- Species Spinibdella yeni Tseng, 1978
- Genus Subbelba Bulanova-Zachvatkina, 1967
- Genus Tamdamaeus Miko & Ermilov, 2017
- Genus Tectodamaeus Aoki, 1984 accepted as Damaeus Koch in Panzer, 1835
- Genus Tokukobelba Lamos, 2016
- Genus Trimetabelba Miko, 2024
- Genus Weigmannia Miko & Norton, 2010
- Family Damaeolidae Grandjean, 1965
- Family Dampfiellidae Balogh, 1961
- Family Dendroeremaeidae Behan-Pelletier, Eamer & Clayton, 2005
- Family Devonacaridae Norton, 1988 †
- Family Drymobatidae J. Balogh & P. Balogh, 1984
- Family Elliptochthoniidae R.A. Norton, 1975
- Family Enantioppiidae Balogh, 1983
- Family Eniochthoniidae Grandjean, 1947
- Family Epactozetidae Grandjean, 1930
- Family Epilohmanniidae Oudemans, 1923
- Family Epimerellidae N. Ayyildiz & M. Luxton, 1989
- Family Eremaeidae Kramer, 1877
- Family Eremaeozetidae Balogh, 1972
- Family Eremellidae Balogh, 1961
- Family Eremobelbidae Balogh, 1961
- Family Eremulidae Grandjean, 1965
- Family Eulohmanniidae Grandjean, 1931
- Family Euphthiracaridae Jacot, 1930
- Family Eutegaeidae Balogh, 1965
- Family Eutegeidae accepted as Eutegaeidae Balogh, 1965
- Family Euzetidae Grandjean, 1954
- Family Fenicheliidae J. Balogh & P. Balogh, 1984
- Family Fortuyniidae van der Hammen, 1960
- Family Galapagacaridae Balogh, 1985 accepted as Hermanniidae Sellnick, 1928
- Family Galumnellidae Piffl, 1970
- Family Galumnidae Jacot, 1925
- Family Gehypochthoniidae Strenzke, 1963
- Family Genavensiidae Mahunka, 1983 accepted as Ceratokalummidae Balogh, 1970
- Family Granuloppiidae Balogh, 1983
- Family Gustaviidae Oudemans, 1900
- Family Gymnodamaeidae Grandjean, 1954
- Family Hammeriellidae A.D. Paschoal, 1989
- Family Haplochthoniidae van der Hammen, 1959
- Family Haplozetidae Grandjean, 1936
- Family Hemileiidae Balogh & Balogh, 1984
- Family Hermanniellidae Grandjean, 1934
- Family Hermanniidae Sellnick, 1928
- Family Heterobelbidae Balogh, 1961
- Family Heterochthoniidae Grandjean, 1954
- Family Hexoppiidae Balogh, 1983
- Family Holonothridae Wallwork, 1963 accepted as Crotoniidae Thorell, 1876
- Family Humerobatidae Grandjean, 1970
- Family Hungarobelbidae Miko & Trave, 1996 accepted as Damaeidae Berlese, 1896
- Family Hydrozetidae Grandjean, 1954
- Family Hypochthoniidae Berlese, 1910
- Family Idiodamaeidae Paschoal, 1987
- Family Idiozetidae Aoki, 1976
- Family Kodiakellidae Hammer, 1967
- Family Lamellareidae Balogh, 1972
- Family Lessiriidae Oudemans, 1917 accepted as Epilohmanniidae Oudemans, 1923
- Family Liacaridae Sellnick, 1928
- Family Licneremaeidae Grandjean, 1931
- Family Licneremaeoidea (awaiting allocation)
- Family Licnobelbidae Grandjean, 1965
- Family Licnodamaeidae Grandjean, 1954
- Family Liebstadiidae Balogh & Balogh, 1984
- Family Limnozetidae Grandjean, 1954
- Family Liodidae Grandjean, 1954 accepted as Neoliodidae Sellnick, 1928
- Family Lohmaniidae Berlese, 1916 accepted as Lohmanniidae Berlese, 1916
- Family Lohmanniidae Berlese, 1916
- Family Luxtoniidae Mahunka, 2001
- Family Lyrifissellidae A.D. Paschoal, 1989
- Family Lyrifissiellidae Paschoal, 1989
- Family Lyroppiidae Balogh, 1983
- Family Machadobelbidae Balogh, 1972
- Family Machuellidae Balogh, 1983
- Family Malaconothridae Berlese, 1916
- Family Maorizetidae Luxton, 1985
- Family Maudheimiidae J. Balogh & P. Balogh, 1984
- Family Megeremaeidae Woolley & Higgins, 1968
- Family Mesoplophoridae Jacot, 1923
- Family Metrioppiidae Balogh, 1943 accepted as Peloppiidae Balogh, 1943
- Family Micreremidae Grandjean, 1954
- Family Microtegeidae Balogh, 1972
- Family Microzetidae Grandjean, 1936
- Family Mochlozetidae Grandjean, 1960
- Family Multoribulidae Balogh, 1972
- Family Mycobatidae Grandjean, 1954
- Family Nacunansellidae Fernandez & Cleva, 1998
- Family Nanhermanniidae Sellnick, 1928
- Family Nanohystricidae Norton & Fuangarworn, 2015
- Family Nasobatidae Balogh, 1972
- Family Nehypochthoniidae Norton & Metz, 1980
- Family Neoeutegaeidae Colloff, 2023
- Family Neoliodidae Sellnick, 1928
- Family Neotrichozetidae Balogh, 1965
- Family Nesozetidae J. Balogh & P. Balogh, 1984
- Family Neuhypochthoniidae accepted as Nehypochthoniidae Norton & Metz, 1980
- Family Niphocepheidae Travé, 1959
- Family Nipobodidae Aoki, 1959 accepted as Nippobodidae Aoki, 1959
- Family Nippobodidae Aoki, 1959
- Family Nodocepheidae Piffl, 1972
- Family Nooliodidae Paschoal, 1989
- Family Nosybeidae Mahunka, 1993
- Family Nosybelbidae Mahunka, 1994
- Family Nothridae Berlese, 1896
- Family Onychobatidae Luxton, 1985
- Family Opiidae accepted as Oppiidae Grandjean, 1954
- Family Oppidae accepted as Oppiidae Grandjean, 1954
- Family Oppiidae Grandjean, 1954
- Family Oribatellidae Jacot, 1925
- Family Oribatida (awaiting allocation)
- Family Oribatida incertae sedis
- Family Oribatidae
- Family Oribatina incertae sedis
- Family Oribatulidae Thor, 1929
- Family Oribatuliidae accepted as Oribatulidae Thor, 1929
- Family Oribellidae Kunst, 1971
- Family Oribotritiidae Grandjean, 1954
- Family Oripodidae Jacot, 1925
- Family Oripodoidea incertae sedis
- Family Otocepheidae Balogh, 1961
- Family Oxyameridae Aoki, 1965
- Family Palaeacaridae Grandjean, 1932
- Family Palaeosomata incertae sedis
- Family Pantelozetidae Kunst, 1971 accepted as Thyrisomidae Grandjean, 1953
- Family Papillonotidae Balogh, 1983
- Family Parakalummatidae accepted as Parakalummidae Grandjean, 1936
- Family Parakalummidae Grandjean, 1936
- Family Parakalumnidae Grandjean, 1936 accepted as Parakalummidae Grandjean, 1936
- Family Parallonothridae Badejo, Woas & Beck, 2002
- Family Parapirnodidae Aoki, 1974
- Family Parhypochthoniidae Grandjean, 1932
- Family Passalozetidae Grandjean, 1954
- Family Pedrocortesellidae Paschoal, 1987
- Family Pelopidae Ewing, 1917 accepted as Phenopelopidae Petrunkevitch, 1955
- Family Peloppiidae Balogh, 1943
- Family Perlohmaniidae accepted as Perlohmanniidae Grandjean, 1954
- Family Perlohmanniidae Grandjean, 1954
- Family Phenopelopidae Petrunkevitch, 1955
- Family Pheroliodidae Paschoal, 1987
- Family Phthiracaridae Perty, 1841
- Family Phyllochthoniidae Travé, 1967
- Family Pirnodidae Grandjean, 1956
- Family Plasmobatidae Grandjean, 1961
- Family Plateremaeidae Trägårdh, 1926
- Family Platyameridae J. Balogh & P. Balogh, 1983
- Family Podacaridae Grandjean, 1955
- Family Podopterogaeidae Piffl, 1972 accepted as Carabodidae C.L. Koch, 1837
- Family Podopterotegaeidae Piffl, 1972 accepted as Carabodidae C.L. Koch, 1837
- Family Polypterozetidae Grandjean, 1959
- Family Prothoplophoridae Ewing, 1917
- Family Protochthoniidae Norton, 1988 †
- Family Protoplophoridae Ewing, 1917
- Family Protoribatidae Balogh & Balogh, 1984
- Family Psammochthoniidae Fuangarworn & Norton, 2013
- Family Pseudoppiidae Mahunka, 1976 accepted as Oribatulidae Thor, 1929
- Family Pterobatidae Balogh & Mahunka, 1977 accepted as Brazilobatidae Koçak & Kemal, 2008
- Family Pterochthoniidae Grandjean, 1950
- Family Pterozetidae M. Luxton, 1988
- Family Punctoribatidae Thor, 1937
- Family Quadroppiidae Balogh, 1983
- Family Ramsayellidae Luxton, 1985
- Family Rhynchoribatidae Balogh, 1961
- Family Rioppiidae Balogh & Mahunka, 1977
- Family Sabahtritiidae Mahunka, 1987 accepted as Oribotritiidae Grandjean, 1954
- Family Scheloribatidae Jacot, 1935
- Family Scutovertecidae accepted as Scutoverticidae Grandjean, 1954
- Family Scutoverticidae Grandjean, 1954
- Family Selenoribatidae Schuster, 1963
- Family Sellnickiidae Balogh & Balogh, 1984
- Family Sphaerochthoniidae Grandjean, 1947
- Family Spherochthoniidae accepted as Sphaerochthoniidae Grandjean, 1947
- Family Spinozetidae Balogh, 1972
- Family Staurobatidae Grandjean, 1966
- Family Steganacaridae Niedbala, 1986
- Family Stelechobatidae Grandjean, 1965
- Family Sternoppiidae Balogh & Mahunka, 1969
- Family Suctobelbidae Grandjean, 1954
- Family Symbioribatidae Aoki, 1966
- Family Synichotritiidae Walker, 1965
- Family Tectocepheidae Grandjean, 1954
- Family Tegeocranellidae P. Balogh, 1987
- Family Tegoribatidae Grandjean, 1954
- Family Temburongiidae Mahunka, 1990
- Family Tenuialidae Jacot, 1929
- Family Teratoppiidae Balogh, 1983
- Family Tetracondylidae Aoki, 1961
- Family Thyriosomidae Grandjean, 1953 accepted as Thyrisomidae Grandjean, 1953
- Family Thyrisomidae Grandjean, 1953
- Family Thyrosomidae Grandjean, 1953 accepted as Thyrisomidae Grandjean, 1953
- Family Tikizetidae Luxton, 1985
- Family Tokunocepheidae Aoki, 1966
- Family Trhypochthonidae Willmann, 1931 accepted as Trhypochthoniidae Willmann, 1931
- Family Trhypochthoniidae Willmann, 1931
- Family Trizetidae Ewing, 1917
- Family Tubulozetidae P. Balogh, 1989
- Family Tumerozetidae Hammer, 1966
- Family Tuparezetidae Balogh, 1972
- Family Ulugurozetidae Mahunka, 1984 accepted as Ramsayellidae Luxton, 1985
- Family Unduloribatidae Kunst, 1971
- Family Xenillidae Woolley & Higgins, 1966
- Family Xenolohmannidae Balogh & Mahunka, 1969 accepted as Lohmanniidae Berlese, 1916
- Family Xylobatidae J. Balogh & P. Balogh, 1984
- Family Zetomimidae Shaldybina, 1966
- Family Zetomotrichidae Grandjean, 1934
- Family Zetorchellidae Özdikmen, 2008
- Family Zetorchestidae Michael, 1898
- 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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