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
- Family Agoristenidae Silhavý, 1973
- Family Agoristeridae Rambla & Juberthie, 1994 accepted as Agoristenidae Silhavý, 1973
- Family Askawachidae Kury & Carvalho in Kury et al., 2020
- Family Assamiidae Sørensen, 1884
- Genus Abanatus Roewer, 1950
- Genus Aberdereca Goodnight & Goodnight, 1959
- Genus Aburista Roewer, 1935
- Genus Aburistella Lawrence, 1947
- Genus Aburitus Roewer, 1935 accepted as Sassandria Roewer, 1912
- Genus Acaca Roewer, 1935
- Genus Acanthacaca Roewer, 1952
- Genus Acanthocoryphus Roewer, 1953 accepted as Chilon Sørensen, 1896
- Genus Acanthophrys Loman, 1902 accepted as Acanthophrysella Strand, 1911
- Genus Acanthophrysella Strand, 1911
- Genus Adamanna accepted as Adamauna Roewer, 1935
- Genus Adamauna Roewer, 1935
- Genus Afroassamia Caporiacco, 1940
- Genus Allereca Roewer, 1961
- Genus Amasilla Strand, 1911 accepted as Hypoxestus Loman, 1902
- Genus Amasis Sörensen, 1910 accepted as Hypoxestus Loman, 1902
- Genus Amhara Pavesi, 1897
- Genus Anaimalus Roewer, 1930
- Genus Anassamia Roewer, 1935
- Genus Angolyppa Lawrence, 1957
- Genus Angopygoplus Lawrence, 1951
- Genus Anjolus Goodnight & Goodnight, 1948
- Genus Apygoplus Roewer, 1912
- Genus Argobba Roewer, 1935 accepted as Amhara Pavesi, 1897
- Genus Assamhoplites Porto, Kontos & Pérez-González, 2024
- Genus Assamia Sørensen, 1884
- Genus Assamiella Roewer, 1923
- Genus Assaphalla Martens, 1977 †
- Genus Assiniana Roewer, 1915 accepted as Sassandria Roewer, 1912
- Genus Ayenea Santos & Prieto, 2010
- Genus Baeorix Thorell, 1889
- Genus Bambereca Kauri, 1985
- Genus Bancoella Lawrence, 1947
- Genus Banconyx Lawrence, 1947
- Genus Bandona Roewer, 1927
- Genus Bibundina Roewer, 1935
- Genus Bindercola Roewer, 1935 accepted as Chilon Sørensen, 1896
- Genus Binderella Roewer, 1935
- Genus Binderia Roewer, 1935
- Genus Blantyrea Roewer, 1912
- Genus Bolama Roewer, 1927
- Genus Bueana Roewer, 1927
- Genus Buemba Roewer, 1935
- Genus Bulobana Roewer, 1935
- Genus Bundelkhandia Turk, 1945
- Genus Bundukia Lawrence, 1962
- Genus Buniabia Roewer, 1961
- Genus Bwitonatus Roewer, 1950
- Genus Cadomea Roewer, 1940
- Genus Caelobunus Roewer, 1923 accepted as Dicoryphus Loman, 1902
- Genus Caelobunus Loman, 1902 accepted as Dicoryphus Loman, 1902
- Genus Callereca Roewer, 1940
- Genus Cardwella Roewer, 1935
- Genus Cassinia Roewer, 1927
- Genus Celimba Roewer, 1940
- Genus Cerea Sørensen, 1896
- Genus Cereatta Roewer, 1935 accepted as Cereatta Staręga, 1992
- Genus Cereatta Staręga, 1992
- Genus Cereipes Roewer, 1935
- Genus Cereodiscus Roewer, 1940
- Genus Cereoides Roewer, 1935
- Genus Chilon Sørensen, 1896
- Genus Cleoxestus Roewer, 1954
- Genus Coelobunus Loman, 1902 accepted as Dicoryphus Loman, 1902
- Genus Coleutus Roewer, 1940
- Genus Comereca Roewer, 1961
- Genus Congolla Roewer, 1935
- Genus Congonella Roewer, 1935
- Genus Congonia Roewer, 1935
- Genus Cryptopygoplus Lawrence, 1931 accepted as Cryptopygoplus Staręga, 1992
- Genus Cryptopygoplus Staręga, 1992
- Genus Dampetrellus Roewer, 1927
- Genus Dampetrus Karsch, 1880
- Genus Dawnabius Roewer, 1935
- Genus Dicoryphus Loman, 1902
- Genus Djemia Roewer, 1935
- Genus Dodabetta Roewer, 1929
- Genus Doloressus Roewer, 1935
- Genus Dongila Roewer, 1927
- Genus Dongmolla Roewer, 1927
- Genus Dunkeriana Roewer, 1912
- Genus Ealabius Roewer, 1950 accepted as Doloressus Roewer, 1935
- Genus Edeala Roewer, 1927
- Genus Ereala Roewer, 1950
- Genus Erebalda Roewer, 1940
- Genus Ereca Sørensen in Sjöstedt, 1910
- Genus Erecabia Roewer, 1940
- Genus Erecella Roewer, 1935 accepted as Erecella Staręga, 1992
- Genus Erecella Staręga, 1992
- Genus Erecomma Roewer, 1940
- Genus Erecongoa Roewer, 1950
- Genus Erecops Roewer, 1940
- Genus Erecula Roewer, 1935
- Genus Eregonda Roewer, 1950
- Genus Eubaeorix Roewer, 1912
- Genus Eudampetrus Roewer, 1935 accepted as Dampetrus Karsch, 1880
- Genus Eupodauchenius Roewer, 1912
- Genus Eupygoplus Roewer, 1915
- Genus Euselenca Roewer, 1923
- Genus Eusidama Roewer, 1913
- Genus Euwintonius Roewer, 1923
- Genus Ewintonius
- Genus Fakoa Roewer, 1923
- Genus Faradjea Roewer, 1950 accepted as Ereala Roewer, 1950
- Genus Filopalpus Martens, 2022
- Genus Findia Roewer, 1915
- Genus Fizibius Roewer, 1961
- Genus Gapotus Roewer, 1935
- Genus Gomezyta Roewer, 1935
- Genus Granobunus Roewer, 1912
- Genus Gudalura Roewer, 1927
- Genus Gulufia Roewer, 1935
- Genus Harpenna Roewer, 1935
- Genus Harsadia Roewer, 1935 accepted as Amhara Pavesi, 1897
- Genus Henriquea Roewer, 1927
- Genus Heteropygoplus Roewer, 1923
- Genus Humbea Roewer, 1935
- Genus Hyamus Thorell, 1891
- Genus Hypoxestinus Roewer, 1927
- Genus Hypoxestus Loman, 1902
- Genus Indosidama Turk, 1945
- Genus Irnia Roewer, 1935
- Genus Irumua Roewer, 1961
- Genus Ivocoryphus Lawrence, 1965
- Genus Izea Roewer, 1927
- Genus Jaundea Roewer, 1935
- Genus Kakontwea Roewer, 1951
- Genus Karalaica Roewer, 1927
- Genus Karsianga Roewer, 1940 accepted as Propygoplus Roewer, 1923
- Genus Kasaina Lawrence, 1957
- Genus Katangania Kauri, 1985
- Genus Kituvia Kauri, 1985
- Genus Kobacoryphus Roewer, 1961 accepted as Chilon Sørensen, 1896
- Genus Kodaika Roewer, 1929
- Genus Koyna Roewer, 1915
- Genus Kukkala Roewer, 1929
- Genus Kungwea Roewer, 1961
- Genus Lawrenciola Roewer, 1935 accepted as Lawrenciola Staręga, 1992
- Genus Lawrenciola Staręga, 1992 accepted as Cryptopygoplus Lawrence, 1931
- Genus Leleupereca Roewer, 1961 accepted as Metereca Roewer, 1923
- Genus Leleupiolus Roewer, 1951
- Genus Lepchana Roewer, 1927
- Genus Linzhiassamia Qi, Kury & Zhang, 2024
- Genus Lisposidama Lawrence, 1962
- Genus Lomanus Kauri, 1985 accepted as Hypoxestus Loman, 1902
- Genus Lossida Roewer, 1935
- Genus Lossidacola Roewer, 1935
- Genus Lubudia Roewer, 1951
- Genus Lukandamila Roewer, 1961 accepted as Lukundamila Roewer, 1961
- Genus Lukundamila Roewer, 1961
- Genus Lygippulus Roewer, 1954
- Genus Lygippus Roewer, 1940
- Genus Mabwella Roewer, 1952
- Genus Maccabeesa Roewer, 1936
- Genus Machadoessa Lawrence, 1951
- Genus Macrodampetrus Roewer, 1915
- Genus Mandaria Roewer, 1935
- Genus Maracandellus Roewer, 1923
- Genus Maracandinus Roewer, 1912
- Genus Maracandus Simon, 1879
- Genus Marua Roewer, 1935 accepted as Marua Staręga, 1992
- Genus Marua Staręga, 1992
- Genus Mbinia Santos & Prieto, 2010
- Genus Mecutina Roewer, 1935
- Genus Mermerus Thorell, 1876
- Genus Merucola Roewer, 1935
- Genus Metachilon Roewer, 1923 accepted as Chilon Sørensen, 1896
- Genus Metadampetrus Roewer, 1915
- Genus Metahyamus Roewer, 1923
- Genus Metamermerus Roewer, 1921
- Genus Metamosoia Roewer, 1915
- Genus Metanothippus Giltay, 1930
- Genus Metapygoplus Roewer, 1923
- Genus Metarhabdopygus Roewer, 1913 accepted as Dicoryphus Loman, 1902
- Genus Metaselenca Roewer, 1912
- Genus Metasesostris Roewer, 1915
- Genus Metasidama Roewer, 1915
- Genus Metassamia Roewer, 1923
- Genus Metereca Roewer, 1923
- Genus Micrassamula Martens, 1977 †
- Genus Monorhabdium Loman, 1902 accepted as Chilon Sørensen, 1896
- Genus Montalenia Santos & Prieto, 2010
- Genus Montereca Lawrence, 1962
- Genus Mormuga Roewer, 1927
- Genus Mosoia Roewer, 1912
- Genus Mudumalus Roewer, 1929
- Genus Musola Roewer, 1927
- Genus Mutadia Kauri, 1985
- Genus Mwenga Kauri, 1985
- Genus Neassamia Roewer, 1935
- Genus Neobaeorix Lawrence, 1962
- Genus Neocoryphus Lawrence, 1965
- Genus Neonothippus Roewer, 1912
- Genus Neopygoplus Roewer, 1923
- Genus Neosidama Roewer, 1915
- Genus Nepalsia Martens, 1977
- Genus Nepalsioides Martens, 1977
- Genus Niefanga Santos & Prieto, 2010
- Genus Nkogoa Roewer, 1927
- Genus Nothippulus Roewer, 1923
- Genus Nothippus Thorell, 1890
- Genus Numipedia Kauri, 1985
- Genus Octobunus Roewer, 1923
- Genus Oppalnia Roewer, 1927
- Genus Orsimonia Roewer, 1935
- Genus Othmar Roewer, 1935 accepted as Orsimonia Roewer, 1935
- Genus Pahangius Roewer, 1935
- Genus Paktongius Suzuki, 1969 †
- Genus Palmanella Roewer, 1927
- Genus Panchganius Roewer, 1935
- Genus Parachilon Roewer, 1923 accepted as Chilon Sørensen, 1896
- Genus Paradampetrus Giltay, 1930
- Genus Parakodaika Goodnight, 1944
- Genus Paramaracandus Suzuki, 1976
- Genus Paranothippus Roewer, 1912
- Genus Parapygoplus Roewer, 1912
- Genus Paraselenca Roewer, 1923
- Genus Paraseleuca accepted as Paraselenca Roewer, 1923
- Genus Parasesostris Roewer, 1915
- Genus Parassamia Roewer, 1935
- Genus Parazalmoxia accepted as Parazalmoxis Roewer, 1913
- Genus Parazalmoxis Roewer, 1913
- Genus Pashokia Roewer, 1927
- Genus Passula Roewer, 1927
- Genus Pauchganius accepted as Panchganius Roewer, 1935
- Genus Pechota Roewer, 1935
- Genus Phalcochina Roewer, 1927
- Genus Phezilbius Roewer, 1935 accepted as Sidama Pavesi, 1895
- Genus Podaucheniellus Roewer, 1927
- Genus Podauchenius Sørensen, 1896
- Genus Polycoryphus Loman, 1902
- Genus Popassamia Roewer, 1940
- Genus Procoryphus Roewer, 1950
- Genus Propygoplus Roewer, 1923
- Genus Pseudoacaca Caporiacco, 1949 accepted as Acaca Roewer, 1935
- Genus Pulchandrus Kauri, 1985 accepted as Pulchrandus Kauri, 1985
- Genus Pulchrandus Kauri, 1985
- Genus Puria Roewer, 1923
- Genus Pygoplus Thorell, 1889
- Genus Pykara Roewer, 1929
- Genus Randilea Roewer, 1935
- Genus Rhabdopygata Roewer, 1954
- Genus Rhabdopygella Roewer, 1935 accepted as Rhabdopygella Staręga, 1992
- Species Rhabdopygella ferruginea Roewer, 1935
- Species Rhabdopygella laevis Roewer, 1935
- Genus Rhabdopygella Staręga, 1992
- Genus Rhabdopygus Roewer, 1912
- Genus Roewereca Lawrence, 1962
- Genus Sacesphorus Thorell, 1889
- Genus Sangalkamia Roewer, 1953 accepted as Chilon Sørensen, 1896
- Genus Santhomea Roewer, 1927
- Genus Sassandria Roewer, 1912
- Genus Scabrobunus Roewer, 1912
- Genus Scabrosidama Lawrence, 1962
- Genus Selenca Sørensen, 1896
- Genus Selencasta Roewer, 1935
- Genus Selencula Roewer, 1935
- Genus Senarba Roewer, 1927
- Genus Sermowaius Roewer, 1923
- Genus Sesostranus Roewer, 1935
- Genus Sesostrellus Roewer, 1935
- Genus Sesostris Sørensen in Sjöstedt, 1910
- Genus Seuthes Henriksen, 1932 accepted as Paraselenca Roewer, 1923
- Genus Seuthesplus Roewer, 1935
- Genus Seuthessus Kauri, 1985
- Genus Sidama Pavesi, 1895
- Genus Sijucavernicus Roewer, 1934
- Genus Sikkimella Roewer, 1927 accepted as Propygoplus Roewer, 1923
- Genus Sikkimula Roewer, 1940 accepted as Propygoplus Roewer, 1923
- Genus Simalurius Roewer, 1923
- Genus Simienatus Roewer, 1957
- Genus Sokodea Roewer, 1935
- Genus Sonega Roewer, 1935
- Genus Spinixestus Roewer, 1952
- Genus Sudaria Roewer, 1923
- Genus Talaspus Roewer, 1935
- Genus Tarnus Suzuki, 1969 †
- Genus Tavoybia Roewer, 1935
- Genus Tengelinia Roewer, 1935 accepted as Binderella Roewer, 1935
- Genus Termitereca Roewer, 1940
- Genus Tetecus Roewer, 1935
- Genus Thobala Roewer, 1940
- Genus Thomecola Roewer, 1935
- Genus Tsadsea Roewer, 1935 accepted as Chilon Sørensen, 1896
- Genus Tubereca Kauri, 1985
- Genus Tundabia Roewer, 1935
- Genus Tusipulla Roewer, 1935
- Genus Typhlobunellus Roewer, 1927
- Genus Typhlobunus Roewer, 1915
- Genus Typhloburista Lawrence, 1947
- Genus Umbonimba Roewer, 1953
- Genus Umtaliella Lawrence, 1934
- Genus Uviranus Kauri, 1985
- Genus Valpara Roewer, 1929
- Genus Vandarawella Roewer, 1935
- Genus Viglua Roewer, 1940
- Genus Vilhena Lawrence, 1949
- Genus Villiersiella Roewer, 1953 accepted as Chilon Sørensen, 1896
- Genus Wintonia Roewer, 1923
- Genus Yadoa Roewer, 1935
- Genus Zirolana Roewer, 1940
- Family Beloniscidae Kury, Pérez-González & Proud, 2019
- Family Biantidae Thorell, 1889
- Family Briggsidae Özdikmen & Demir, 2008
- Family Buemarinoidae Karaman, 2019
- Family Caddidae Banks, 1892
- Family Ceratolasmatidae Shear, 1986 accepted as Ischyropsalididae Simon, 1879
- Family Ceratolasmetidae accepted as Ceratolasmatidae Shear, 1986
- Family Ceratolasmidae accepted as Ceratolasmatidae Shear, 1986
- Family Cladonychiidae Hadzi, 1935
- Family Cosmetidae C.L. Koch, 1839
- Family Cranaidae Roewer, 1913
- Family Cryptogeobiidae Kury, 2014
- Family Cyphophthalmi (awaiting allocation)
- Family Cyphophthalmi incertae sedis
- Family Dicranolasmatidae Simon, 1879
- Family Dyspnoi incertae sedis
- Family Eotrogulidae Petrunkevitch, 1955 †
- Family Epedanidae Sørensen in L. Koch, 1886
- Family Erebomastridae Briggs, 1969 accepted as Cladonychiidae Hadzi, 1935
- Family Escadabiidae Kury & Pérez, 2003
- Family Eupnoi incertae sedis
- Family Gagrellidae
- Family Gerdesiidae Bragagnolo, Hara & Pinto-da-Rocha, 2015
- Family Globipedidae Kury & Cokendolpher in Kury et al., 2020
- Family Gonyleptidae Sundevall, 1833
- Family Grassatores incertae sedis
- Family Guasiniidae González-Sponga, 1997
- Family Hastocularidae Kury, Dunlop & Mendes in Kury et al., 2020 †
- Family Hinzuanidae Pocock, 1903 accepted as Biantidae Thorell, 1889
- Family Icaleptidae Kury & Pérez, 2002
- Family Ischyropsalidae Simon, 1879 accepted as Ischyropsalididae Simon, 1879
- Family Ischyropsalididae Simon, 1879
- Family Ischyropsalidoidea incertae sedis
- Family Kimulidae Pérez-González, Kury & Alonso-Zarazaga in Pérez-González & Kury, 2007
- Family Kustarachnidae Petrunkevitch, 1913 †
- Family Leiobunidae
- Family Lomanellidae Mendes & Derkarabetian, 2021
- Family Manaosbiidae Roewer, 1943
- Family Megalopsalididae
- Family Mesokanidae Bartel, Dunlop, Sharma, Selden, Ren & Shih, 2021 †
- Family Metasarcidae Kury, 1994
- Family Minuidae Sørensen, 1932 accepted as Kimulidae Pérez-González, Kury & Alonso-Zarazaga in Pérez-González & Kury, 2007
- Family Monoscutidae Forster, 1948
- Family Nemastomatidae Simon, 1879
- Family Nemastomoididae Petrunkevitch, 1955 †
- Family Neogoveidae Shear, 1980
- Family Neopilionidae Lawrence, 1931
- Family Nipponopsalididae Martens, 1976
- Family Nomoclastidae Roewer, 1943
- Family Ogoveidae Shear, 1980
- Family Oncopodidae Thorell, 1876 accepted as Sandokanidae Özdikmen & Kury, 2007
- Family Opiliones (awaiting allocation)
- Family Opilionida (awaiting allocation)
- Family Otilioleptidae Acosta, 2019
- Family Palpinidae Pickard-Cambridge, 1905 accepted as Cosmetidae C.L. Koch, 1839
- Family Paralolidae Kratochvíl, 1958 accepted as Phalangodidae Simon, 1879
- Family Paranonychidae Briggs, 1971
- Family Parasironidae Karaman, Mitov & Snegovaya, 2024
- Family Peltaeonychidae Absolon & Kratochvíl, 1932 accepted as Travuniidae Absolon & Kratochvíl, 1932
- Family Pentanychidae Briggs, 1971
- Family Petrobunidae Sharma & Giribet, 2011
- Family Pettalidae Shear, 1980
- Family Phalangiidae Thorell, 1876
- Family Phalangioidea incertae sedis
- Family Phalangodidae Simon, 1879
- Family Podoctidae Roewer, 1912
- Family Prostygnidae Roewer, 1913
- Family Protolophidae
- Family Pyramidopidae Sharma, Prieto & Giribet, 2011
- Family Sabaconidae Dresco, 1970
- Family Samoidae Sørensen in L. Koch, 1886
- Family Sandokanidae Özdikmen & Kury, 2007
- Family Sclerosomatidae Simon, 1879
- Family Sironidae Simon, 1879
- Family Stignidae Mello-Leitão, 1935 accepted as Stygnidae Simon, 1879
- Family Stygnidae Simon, 1879
- Family Stygnommatidae Roewer, 1923
- Family Stygnopsidae Sørensen, 1932
- Family Stygophalangiidae Oudemans, 1933
- Family Stylocellidae Hansen & Sørensen, 1904
- Family Suthepiidae Martens, 2020
- Family Synthetonychidae Forster, 1954
- Family Taracidae Schönhofer, 2013
- Family Tetrophthalmi incertae sedis
- Family Tithaeidae Sharma & Giribet, 2011
- Family Travuniidae Absolon & Kratochvíl, 1932
- Family Travunioidea (awaiting allocation)
- Family Triaenonychidae Sørensen in L. Koch, 1886
- Family Trionyxellidae Roewer, 1912
- Family Troglosironidae Shear, 1993
- Family Trogulidae Sundevall, 1833
- Family Troguloidea incertae sedis
- Family Zalmoxidae
- Family Zalmoxioidae Sørensen in L. Koch, 1886 accepted as Zalmoxidae
- Family Zalmoxoidea incertae sedis
- Genus Bicnia Kishida
- Genus Devonopilio Tihelka, Tian & Cai, 2020 †
- Genus Hasseltides Weyenbergh, 1869 †
- Genus Siva Kishida
- 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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