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
- 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
- Genus Acanthogonyleptes Mello-Leitão, 1922 accepted as Sphaerobunus Roewer, 1917
- Genus Acanthopachyloides Piza, 1942 accepted as Pachylus Kollar in Koch, 1839
- Genus Acanthopachylopsis Soares & Soares, 1949
- Genus Acanthopachylus Roewer, 1923
- Genus Acanthoprocta Loman, 1899
- Genus Acanthpachylus Roewer, 1913 accepted as Acanthopachylus Roewer, 1923
- Genus Acantoprocta Cekalovic, 1968 accepted as Acanthoprocta Loman, 1899
- Genus Acantrhoprocta Canals, 1936 accepted as Acanthoprocta Loman, 1899
- Genus Acrogonyleptes Roewer, 1917
- Genus Acrogonyleptoides Mello-Leitão, 1931 accepted as Acrogonyleptes Roewer, 1917
- Genus Acrographinotus Holmgren, 1916 accepted as Acrographinotus Roewer, 1929
- Genus Acrographinotus Roewer, 1929
- Genus Acutisoma Roewer, 1913
- Genus Acutisomella Roewer, 1930 accepted as Acutisoma Roewer, 1913
- Genus Acutisomelloides Mello-Leitão, 1932 accepted as Acutisoma Roewer, 1913
- Genus Adelphobunus Mello-Leitão, 1935 accepted as Sphaerobunus Roewer, 1917
- Genus Adhynastes Roewer, 1930
- Genus Aesotrinoma Soares, 1977
- Genus Afranius Mello-Leitão, 1934 accepted as Bourguyia Mello-Leitão, 1923
- Genus Alfranius accepted as Bourguyia Mello-Leitão, 1923
- Genus Allelochirus Mello-Leitão, 1942 accepted as Ceropachylus Mello-Leitão, 1942
- Genus Allogonyleptes Roewer, 1917
- Genus Amazochroma Carvalho & Kury, 2018
- Genus Ampheres Koch, 1839
- Genus Ampycella Roewer, 1929
- Genus Ampycus Simon, 1879
- Genus Ancistrocerus Koch in Hahn, 1839 accepted as Metamitobates Roewer, 1913
- Genus Ancistrotellus Roewer, 1923 accepted as Metamitobates Roewer, 1913
- Genus Ancistrotus Koch in Hahn, 1839 accepted as Metamitobates Roewer, 1913
- Genus Ancystrotus Mello-Leitão, 1927 accepted as Metamitobates Roewer, 1913
- Genus Angathisoma Roewer, 1943 accepted as Glysterus Roewer, 1931
- Genus Angistripygus Roewer, 1943 accepted as Iguapeia Mello-Leitão, 1935
- Genus Anisoleptes Toledo Piza, 1940 accepted as Collonychium Bertkau, 1880
- Genus Annampheres Soares, 1979 accepted as Zortalia Mello-Leitão, 1936
- Genus Anomaloleptes Mello-Leitão, 1935 accepted as Liogonyleptoides Mello-Leitão, 1925
- Genus Anoplogynopsis Soares, 1966
- Genus Anoplogynus Piza, 1938 accepted as Gyndulus Roewer, 1929
- Genus Anoploleptes Toledo Piza, 1940 accepted as Mischonyx Bertkau, 1880
- Genus Antetriceras Roewer, 1949
- Genus Anthoprocta accepted as Acanthoprocta Loman, 1899
- Genus Apembolephaenus Holmberg, 1909 accepted as Hernandaria Sørensen, 1884
- Genus Apembolephenus Mello-Leitão, 1933 accepted as Hernandaria Sørensen, 1884
- Genus Apophysigerus Canals, 1934 accepted as Parapachyloides Roewer, 1913
- Genus Araucanoleptes Mello-Leitão, 1946 accepted as Sadocus Sørensen in Koch (Keyserling), 1886
- Genus Arauconoleptes Cekalovic, 1985 accepted as Sadocus Sørensen in Koch (Keyserling), 1886
- Genus Ariaeus Sørensen, 1932
- Genus Arleius Mello-Leitão, 1935 accepted as Mischonyx Bertkau, 1880
- Genus Arminda Roewer, 1949
- Genus Arruda Mello-Leitão, 1940
- Genus Arthrodes Koch, 1839
- Genus Asarcus Koch, 1839
- Genus Bacigalupo Mello-Leitão, 1933 accepted as Pygophalangodus Mello-Leitão, 1931
- Genus Balta Sørensen, 1902 accepted as Eubalta Roewer, 1923
- Genus Baltanata Strand, 1942 accepted as Eubalta Roewer, 1923
- Genus Barbiellinia Mello-Leitão, 1944 accepted as Triglochinura Mello-Leitão, 1924
- Genus Batomites Mello-Leitão, 1931 accepted as Promitobates Roewer, 1913
- Genus Beckeresia Soares, 1970 † accepted as Gyndulus Roewer, 1929
- Genus Berlaia Mello-Leitõ, 1940
- Genus Biconisoma Roewer, 1936
- Genus Bissula Roewer, 1929
- Genus Bissulla Soares & Soares, 1954 accepted as Bissula Roewer, 1929
- Genus Bocaina Piza, 1943 accepted as Sphaerobunus Roewer, 1917
- Genus Bogdana Mello-Leitão, 1940
- Genus Bosqia Canals, 1933 accepted as Pachyloides Holmberg, 1887
- Genus Bourguyia Mello-Leitão, 1923
- Genus Bresslauius Mello-Leitão, 1935
- Genus Bristoweia Mello-Leitão, 1924
- Genus Bristoweria Muñoz-Cuevas, 1973 accepted as Bristoweia Mello-Leitão, 1924
- Genus Bullaeepus Mello-Leitão, 1935 accepted as Bullaepus Roewer, 1930
- Genus Bullaepus Roewer, 1930
- Genus Bunoleptes Mello-Leitão, 1935 accepted as Mischonyx Bertkau, 1880
- Genus Bunopachylus Roewer, 1943
- Genus Bunoplus Roewer, 1928
- Genus Bunostigma Mello-Leitão, 1935
- Genus Bunoweyhia Mello-Leitão, 1935 accepted as Neosadocus Mello-Leitão, 1926
- Genus Buzioleptes Soares, 1966 accepted as Liops Mello-Leitão, 1940
- Genus Cadeadoius Mello-Leitõ, 1936
- Genus Caelopygulus Mello-Leitão, 1932 accepted as Ampheres Koch, 1839
- Genus Caelopygus Koch, 1839
- Genus Cajacaybia Roewer, 1957
- Genus Cajamarca Roewer, 1952
- Genus Cajango Kury & Bernabé, 2023
- Genus Calcarogyndes Mello-Leitão, 1932
- Genus Calcogyndes Mello-Leitão, 1935 accepted as Calcarogyndes Mello-Leitão, 1932
- Genus Caldanatus Roewer, 1945
- Genus Caldasiella Mello-Leitão, 1931 accepted as Sphaerobunus Roewer, 1917
- Genus Caldasius Roewer, 1930
- Genus Callampheres Roewer, 1931 accepted as Parampheres Roewer, 1913
- Genus Callcarogyndes Mello-Leitão, 1932 accepted as Calcarogyndes Mello-Leitão, 1932
- Genus Camarana Mello-Leitão, 1935
- Genus Camposicola Mello-Leitão, 1924
- Genus Camposicoloides Soares, 1945
- Genus Canalsia Mello-Leitão, 1930 accepted as Pachyloides Holmberg, 1887
- Genus Canestrinia Mello-Leitão, 1931 accepted as Pygophalangodus Mello-Leitão, 1931
- Genus Canopilio Soares, 1968 accepted as Mangaratiba Mello-Leitão, 1940
- Genus Capichabesia Soares, 1945
- Genus Caporiacoius Mello-Leitão, 1936 accepted as Pseudopachylus Roewer, 1913
- Genus Caramaschia Kury, 2002
- Genus Carampangue Mello-Leitão, 1937 accepted as Sadocus Sørensen in Koch (Keyserling), 1886
- Genus Cargaruaya Roewer, 1956
- Genus Carguruaya accepted as Cargaruaya Roewer, 1956
- Genus Carlotta Roewer, 1943
- Genus Castellanosia Mello-Leitão, 1937 accepted as Ergastria Mello-Leitão, 1941
- Genus Caxambusia Mello-Leitão, 1935 accepted as Sphaerobunus Roewer, 1917
- Genus Cearinus Roewer, 1929
- Genus Centroleptes Roewer, 1943
- Genus Ceratoleptes Soares & Soares, 1979
- Genus Cercopachylus Toledo Piza, 1940 accepted as Meteusarcoides Mello-Leitão, 1922
- Genus Ceropachylinus Mello-Leitão, 1943
- Genus Ceropachylus Mello-Leitão, 1942
- Genus Cezarella Mello-Leitão, 1932 accepted as Parampheres Roewer, 1913
- Genus Chacoikeontus Roewer, 1929
- Genus Chaquesia Soares, 1945
- Genus Chauveaua Canals, 1939
- Genus Chavensicola Soares & Soares, 1946 accepted as Chavesincola Soares & Soares, 1946
- Genus Chavesincola Soares & Soares, 1946
- Genus Chilebalta Roewer, 1961
- Genus Chilegyndes Roewer, 1961
- Genus Cnemoleptes Mello-Leitão, 1941
- Genus Cobania Roewer, 1913
- Genus Coelopygulus Roewer, 1931 accepted as Ampheres Koch, 1839
- Genus Coelopygus Agassiz, 1845 accepted as Caelopygus Koch, 1839
- Genus Coelopygus Mello-Leitão, 1922 accepted as Caelopygus Koch, 1839
- Genus Coelopygus Erichson, 1845 accepted as Caelopygus Koch, 1839
- Genus Collonychium Bertkau, 1880
- Genus Conapesquius Carvalho & Kury, 2024
- Genus Corcovadesia Soares & Soares, 1954 accepted as Liops Mello-Leitão, 1940
- Genus Corralia Roewer, 1913
- Genus Costalimaiella Mello-Leitão, 1931 accepted as Sphaerobunus Roewer, 1917
- Genus Costalimarella Mello-Leitão, 1935 accepted as Sphaerobunus Roewer, 1917
- Genus Cryptogeobius Mello-Leitão, 1935
- Genus Cryptomeloleptes Mello-Leitão, 1931 accepted as Mischonyx Bertkau, 1880
- Genus Crypturocytia Mello-Leitão, 1932 accepted as Cobania Roewer, 1913
- Genus Ctatoproceros Soares & Bauab, 1973 accepted as Acrographinotus Roewer, 1929
- Genus Currala Roewer, 1928
- Genus Daguerreia Canals, 1933 accepted as Pachyloides Holmberg, 1887
- Genus Daguerrera Mello-Leitão, 1935 accepted as Pachyloides Holmberg, 1887
- Genus Dasypoleptes Mello-Leitão, 1949 accepted as Thereza Roewer, 1943
- Genus Dasypoletes Pinto-da-Rocha, 2002 accepted as Thereza Roewer, 1943
- Genus Deltaspidium Roewer, 1928
- Genus Deltigalus Roewer, 1931
- Genus Derzius Roewer, 1949 accepted as Heteromeloleptes Mello-Leitão, 1931
- Genus Despiroides Mello-Leitão, 1932 accepted as Mitobates Sundevall, 1833
- Genus Despirus Roewer, 1929
- Genus Diconospelta Canals, 1934
- Genus Diplocaldasius Mello-Leitão, 1934 accepted as Sphaerobunus Roewer, 1917
- Genus Discocyrtanus Roewer, 1929 accepted as Discocyrtus Holmgren, 1878
- Genus Discocyrtoides Mello-Leitão, 1923
- Genus Discocyrtulosoma Piza, 1943 accepted as Discocyrtus Holmgren, 1878
- Genus Discocyrtulus Roewer, 1928
- Genus Discocyrtus Holmgren, 1878
- Genus Doelloa Mello-Leitão, 1930 accepted as Pachyloidellus Müller, 1917
- Genus Dolichoscelis Hope, 1836 accepted as Mitobates Sundevall, 1833
- Genus Drastus Roewer, 1943 accepted as Bourguyia Mello-Leitão, 1923
- Genus Dyscocyrtoides Mello-Leitão, 1923 accepted as Discocyrtoides Mello-Leitão, 1923
- Genus Eduardoius Mello-Leitão, 1931 accepted as Mischonyx Bertkau, 1880
- Genus Enanticocentron Mello-Leitão, 1942 accepted as Eusarcus Perty, 1833
- Genus Enantiocentron Mello-Leitão, 1932 accepted as Eusarcus Perty, 1833
- Genus Encheiridium Kury, 2003
- Genus Eopachyloides Soares, 1970 accepted as Gyndulus Roewer, 1929
- Genus Eopachylus Mello-Leitão, 1931
- Genus Ergastria Mello-Leitão, 1941
- Genus Eubalta Roewer, 1923
- Genus Eugonyleptes Roewer, 1913
- Genus Eugyndes Roewer, 1913
- Genus Eugyndopsiella Soares, 1972 accepted as Gyndulus Roewer, 1929
- Genus Eupachylus Mello-Leitão, 1937 accepted as Eopachylus Mello-Leitão, 1931
- Genus Eusarchus Walckenaer & Gervais, 1844 accepted as Eusarcus Perty, 1833
- Genus Eusarcoides Roewer, 1913 accepted as Eusarcus Perty, 1833
- Genus Eusarcus Perty, 1833
- Genus Exochobunus Mello-Leitão, 1931 accepted as Metarthrodes Roewer, 1913
- Genus Flangeia Mello-Leitão, 1933 accepted as Cobania Roewer, 1913
- Genus Fonckia Roewer, 1913
- Genus Friburgoia Mello-Leitão, 1932
- Genus Friburguesia Soares, 1946 accepted as Bresslauius Mello-Leitão, 1935
- Genus Garatiba Mello-Leitão, 1940
- Genus Geogonys Mello-Leitão, 1937 accepted as Guascaleptes Mello-Leitão, 1933
- Genus Geogonys Mello-Leitão, 1935 accepted as Geogonys Mello-Leitão, 1937
- Genus Gephyropachylus Mello-Leitão, 1931 accepted as Neopachylus Roewer, 1913
- Genus Geraecomorbiella Mello-Leitão, 1931 accepted as Geraecormobius Holmberg, 1887
- Genus Geraecormobius Holmberg, 1887
- Genus Geraeocormobius Roewer, 1923 accepted as Geraecormobius Holmberg, 1887
- Genus Gertia Soares & Soares, 1946
- Genus Giltaya Mello-Leitão, 1932 accepted as Mischonyx Bertkau, 1880
- Genus Giupponia Pérez & Kury, 2002
- Genus Glypotgoniosoma Mello-Leitão, 1930 accepted as Acutisoma Roewer, 1913
- Genus Glyptogoniosoma Mello-Leitão, 1932 accepted as Acutisoma Roewer, 1913
- Genus Glysteroides Roewer, 1943 accepted as Glysterus Roewer, 1931
- Genus Glysterus Roewer, 1931
- Genus Goitacazia Mello-Leitão, 1942 accepted as Parapucrolia Roewer, 1917
- Genus Gonazula Roewer, 1930
- Genus Goniosoma Perty, 1833
- Genus Goniosomella Mello-Leitão, 1936 accepted as Lyogoniosoma Mello-Leitão, 1926
- Genus Goniosomoides Mello-Leitão, 1932
- Genus Gonoleptes Gray, 1833 accepted as Gonyleptes Kirby, 1819
- Genus Gonoleptes Sundevall, 1833 accepted as Gonyleptes Kirby, 1819
- Genus Gonoleptus Berthold in Latreille, 1827 accepted as Gonyleptes Kirby, 1819
- Genus Gonoleptus Erichson, 1845 accepted as Gonyleptes Kirby, 1819
- Genus Gonyassamia Soares & Soares, 1988 accepted as Trichominua Mello-Leitão, 1938
- Genus Gonyleptellus Roewer, 1930
- Genus Gonyleptes Kirby, 1819
- Genus Gonyleptilus Roewer, 1928 accepted as Megapachylus Roewer, 1913
- Genus Gonyleptis Pocock, 1904 accepted as Gonyleptes Kirby, 1819
- Genus Gonyleptoides Roewer, 1913
- Genus Gonyperna Roewer, 1930 accepted as Megapachylus Roewer, 1913
- Genus Gonypernoides Mello-Leitão, 1932 accepted as Uracantholeptes Mello-Leitão, 1926
- Genus Goodnightiella Soares & Soares, 1946
- Genus Gorgonasta Roewer, 1932 accepted as Nesopachylus Chamberlin, 1925
- Genus Goyazella Mello-Leitão, 1931 accepted as Parapachyloides Roewer, 1913
- Genus Goyazelloides Soares & Bauab, 1973 accepted as Tingomaria Mello-Leitão & Araujo Feio, 1949
- Genus Goyazia Toledo Piza, 1940 accepted as Eusarcus Perty, 1833
- Genus Goytacazia Mello-Leitão, 1942 accepted as Parapucrolia Roewer, 1917
- Genus Goytacazio Mello-Leitão, 1942 accepted as Parapucrolia Roewer, 1917
- Genus Graphinotus Koch, 1839
- Genus Graphonotus Agassiz, 1846 accepted as Graphinotus Koch, 1839
- Genus Guaranilia Mello-Leitão, 1937 accepted as Guaraniticus Mello-Leitão, 1933
- Genus Guaraniticus Mello-Leitão, 1933
- Genus Guascaia Mello-Leitão, 1935 accepted as Acanthopachylus Roewer, 1923
- Genus Guascaleptes Mello-Leitão, 1933
- Genus Guatubesia Scares, 1978
- Genus Gyndes Sørensen, 1884 accepted as Eugyndes Roewer, 1913
- Genus Gyndesoides Mello-Leitão, 1933
- Genus Gyndesops Roewer, 1943
- Genus Gyndoides Mello-Leitão, 1927
- Genus Gyndosops accepted as Gyndesops Roewer, 1943
- Genus Gyndulus Roewer, 1929
- Genus Hanseniella Mello-Leitão, 1927 accepted as Friburgoia Mello-Leitão, 1932
- Genus Harpachylus Roewer, 1943
- Genus Haversia Roewer, 1913
- Genus Heliella Soares, 1946
- Genus Hernandaria Sørensen, 1884
- Genus Hernandarioides Cambridge, 1905
- Genus Hernandria Banks, 1909
- Genus Heterampheres Mello-Leitão, 1935 accepted as Metarthrodes Roewer, 1913
- Genus Heterarthrodes Mello-Leitão, 1935 accepted as Caelopygus Koch, 1839
- Genus Heterogonyleptes Roewer, 1913 accepted as Pseudopucrolia Roewer, 1912
- Genus Heteromeloleptes Mello-Leitão, 1931
- Genus Heteromitobates Roewer, 1913 accepted as Acutisoma Roewer, 1913
- Genus Heteropachyloidellus Mello-Leitão, 1927 accepted as Acanthopachylus Roewer, 1923
- Genus Heteropachylus Roewer, 1913
- Genus Heteropucrolia Mello-Leitão, 1932 accepted as Discocyrtus Holmgren, 1878
- Genus Hexabunus Roewer, 1913
- Genus Hoggellula Roewer, 1930
- Genus Holoversia Mello-Leitão, 1940
- Genus Huadquina Roewer, 1930
- Genus Huasampilla Mello-Leitão, 1932 accepted as Huasampillia Roewer, 1913
- Genus Huasampillia Roewer, 1913
- Genus Hugoesia Soares, 1968 accepted as Inhuma Piza, 1938
- Genus Huralvius Mello-Leitão, 1935 accepted as Neopachylus Roewer, 1913
- Genus Hutamaia Soares & Soares, 1978
- Genus Hyperpachylus Roewer, 1957
- Genus Hypophyllonomus Giltay, 1928
- Genus Iamarinus Carvalho & Kury, 2024
- Genus Iandumoema Pinto-da-Rocha, 1997
- Genus Ibarra Roewer, 1926
- Genus Ibarroides Mello-Leitão, 1932 accepted as Despirus Roewer, 1929
- Genus Iguapeia Mello-Leitão, 1935
- Genus Iguassua Mello-Leitão, 1935
- Genus Iguassuoides Soares & Soares, 1954
- Genus Ilhaia Roewer, 1913 accepted as Mischonyx Bertkau, 1880
- Genus Ilhania Mello-Leitão, 1936 accepted as Neosadocus Mello-Leitão, 1926
- Species Ilhania robusta Mello-Leitão, 1936 accepted as Neosadocus robustus (Mello-Leitão, 1936)
- Genus Inhuma Piza, 1938
- Genus Ipiranga Muñoz-Cuevas, 1973 accepted as Uropachylus Mello-Leitão, 1922
- Genus Iporangaia Mello-Leitão, 1935
- Genus Ischnotherus Kury, 1991
- Genus Isopucrolia Mello-Leitão, 1927 accepted as Bourguyia Mello-Leitão, 1923
- Genus Itaoca Mello-Leitão, 1935 accepted as Triglochinura Mello-Leitão, 1924
- Genus Itatiaincola Soares & Soares, 1948
- Genus Itatiaya Roewer, 1928 accepted as Acutisoma Roewer, 1913
- Genus Itequahy Mello-Leitão, 1949 accepted as Ampycus Simon, 1879
- Genus Izecksohnopilio Soares, 1977
- Genus Jacarepaguana Mello-Leitão, 1932 accepted as Metagraphinotus Mello-Leitão, 1927
- Genus Japira Mello-Leitão, 1935 accepted as Uropachylus Mello-Leitão, 1922
- Genus Japyra Mello-Leitão, 1934 accepted as Uropachylus Mello-Leitão, 1922
- Genus Jighas Roewer, 1943 accepted as Sadocus Sørensen in Koch (Keyserling), 1886
- Genus Jlhaia Roewer, 1930 accepted as Mischonyx Bertkau, 1880
- Genus Junicus Goodnight & Goodnight, 1947
- Genus Jupuvura Mello-Leitão, 1940 accepted as Roeweria Mello-Leitão, 1923
- Genus Juticus Roewer, 1943
- Genus Kainganga Mello-Leitão, 1933 accepted as Collonychium Bertkau, 1880
- Genus Kaingangoides Piza, 1938 accepted as Sphaerobunus Roewer, 1917
- Genus Kaluga Goodnight, 1942 accepted as Hernandarioides Cambridge, 1905
- Genus Kapichaba Mello-Leitão, 1942 accepted as Metarthrodes Roewer, 1913
- Genus Khazaddum Carvalho, Kury & Hara in Kury et al., 2020
- Genus Klobinia Mello-Leitão, 1936 accepted as Gyndesoides Mello-Leitão, 1933
- Genus Kochipachylus Strand, 1942 accepted as Pachylus Kollar in Koch, 1839
- Genus Krateromaspis Carvalho & Kury, 2021
- Genus Kuryella Özdikmen, 2006
- Genus Lacronia Strand, 1942
- Genus Laneius Soares, 1942 accepted as Progonyleptoidellus Piza, 1940
- Genus Lanesoares Roewer, 1949
- Genus Langesia Soares, 1945 accepted as Iguapeia Mello-Leitão, 1935
- Genus Leitaoius Roewer, 1930 accepted as Acutisoma Roewer, 1913
- Genus Leonardosia Mello-Leitão, 1935 accepted as Promitobates Roewer, 1913
- Genus Leptocnema Koch, 1839 accepted as Leptocnemus Koch, 1839
- Genus Leptocnemus Koch, 1839
- Genus Leptogonys Mello-Leitão, 1932 accepted as Sphaerobunus Roewer, 1917
- Genus Leptogonys Mello-Leitão, 1931 accepted as Sphaerobunus Roewer, 1917
- Genus Liarthrodes Mello-Leitão, 1922 accepted as Caelopygus Koch, 1839
- Genus Liogonissoma Mello-Leitão, 1935 accepted as Lyogoniosoma Mello-Leitão, 1926
- Genus Liogonyleptoides Mello-Leitão, 1925
- Genus Liographinotus Roewer, 1957 accepted as Acrographinotus Roewer, 1929
- Genus Liogyndulus Mello-Leitão, 1932 accepted as Cobania Roewer, 1913
- Genus Liopachylus Mello-Leitão, 1932 accepted as Roeweria Mello-Leitão, 1923
- Genus Liops Mello-Leitão, 1940
- Genus Longiperna Roewer, 1929
- Genus Lucma Roewer, 1930 accepted as Huasampillia Roewer, 1913
- Genus Luederwaldtia Mello-Leitão, 1923 accepted as Lacronia Strand, 1942
- Genus Lussanvira Mello-Leitão, 1935 accepted as Gyndulus Roewer, 1929
- Genus Lycomedes Sørensen, 1902 accepted as Sadocus Sørensen in Koch (Keyserling), 1886
- Genus Lycomedicus Roewer, 1913 accepted as Sadocus Sørensen in Koch (Keyserling), 1886
- Genus Lycomedius Strand, 1942 accepted as Sadocus Sørensen in Koch (Keyserling), 1886
- Genus Lycomedius Kästner, 1937 accepted as Sadocus Sørensen in Koch (Keyserling), 1886
- Genus Lyogoniosoma Mello-Leitão, 1926
- Genus Lyogonyleptoides Mello-Leitão, 1926 accepted as Liogonyleptoides Mello-Leitão, 1925
- Genus Lyopachylus Mello-Leitão, 1926 accepted as Roeweria Mello-Leitão, 1923
- Genus Lyopachylus Mello-Leitão, 1923 accepted as Roeweria Mello-Leitão, 1923
- Genus Machairoscelis Kury, 2003
- Genus Mangaratiba Mello-Leitão, 1940
- Genus Marayniocus Acosta, 2006
- Genus Maromba Soares & Soares, 1954
- Genus Megapachylus Roewer, 1913
- Genus Melloa Roewer, 1930
- Genus Melloceras Roewer, 1949 accepted as Heteromeloleptes Mello-Leitão, 1931
- Genus Melloinia Thor, 1933 accepted as Pygophalangodus Mello-Leitão, 1931
- Genus Melloinio Thor, 1933 accepted as Pygophalangodus Mello-Leitão, 1931
- Genus Melloleitaniana Soares, 1943 accepted as Acrogonyleptes Roewer, 1917
- Genus Melloleitaniella Toledo Piza, 1940 accepted as Gonyleptes Kirby, 1819
- Genus Melloleitanius Piza, 1938 accepted as Yraguara Mello-Leitão, 1937
- Genus Melloleitaoella Strand, 1932 accepted as Pygophalangodus Mello-Leitão, 1931
- Genus Mello-Leitaoëlla Strand, 1932 accepted as Melloleitaoella Strand, 1932
- Genus Mellops Roewer, 1949 accepted as Heteromeloleptes Mello-Leitão, 1931
- Genus Melloteitaniana Tavares, 1980 accepted as Acrogonyleptes Roewer, 1917
- Genus Mendesius Roewer, 1943 accepted as Gonyleptes Kirby, 1819
- Genus Metabalta Roewer, 1913
- Genus Metadiscocyrtus Roewer, 1929
- Genus Metagoniosoma Roewer, 1917 accepted as Gonyleptes Kirby, 1819
- Genus Metagonyleptes Roewer, 1913 accepted as Mischonyx Bertkau, 1880
- Genus Metagonyleptoides Mello-Leitão, 1923 accepted as Collonychium Bertkau, 1880
- Genus Metagraphinotus Mello-Leitão, 1927
- Genus Metagyndes Roewer, 1913
- Genus Metagyndoides Mello-Leitão, 1931
- Genus Metalycomedes Mello-Leitão, 1927
- Genus Metalycomedes Mello-Leitão, 1926 accepted as Metalycomedes Mello-Leitão, 1927
- Genus Metalyogoniosoma Soares & Soares, 1946
- Genus Metamitobates Roewer, 1913
- Genus Metampheres Roewer, 1913
- Genus Metampheroides Mello-Leitão, 1941 accepted as Ampheres Koch, 1839
- Genus Metapachyloides Roewer, 1917
- Genus Metaphalangodella Roewer, 1915
- Genus Metapucrolia Roewer, 1913 accepted as Eusarcus Perty, 1833
- Genus Metaroeweria Mello-Leitão, 1936 accepted as Mitobates Sundevall, 1833
- Genus Metarthorodes Mello-Leitão, 1926 accepted as Metarthrodes Roewer, 1913
- Genus Metarthrodes Roewer, 1913
- Genus Metaxundarava Mello-Leitão, 1927 accepted as Acrogonyleptes Roewer, 1917
- Genus Meteusarcoides Mello-Leitão, 1922
- Genus Meteusarcus Roewer, 1913
- Genus Microgoniosoma Mello-Leitão, 1930 accepted as Discocyrtus Holmgren, 1878
- Genus Mischonyx Bertkau, 1880
- Genus Mitobates Sundevall, 1833
- Genus Mitobatoides Mello-Leitão, 1927 accepted as Discocyrtoides Mello-Leitão, 1923
- Genus Mitobatula Roewer, 1931
- Genus Mitogoniella Mello-Leitão, 1936 accepted as Acutisoma Roewer, 1913
- Genus Mitoperna Roewer, 1931 accepted as Neosadocus Mello-Leitão, 1926
- Genus Mitopernoides Soares, 1944
- Genus Monocerodynus Mello-Leitão, 1940 accepted as Sphaerobunus Roewer, 1917
- Genus Monticola Soares, 1944 accepted as Pseudopachylus Roewer, 1913
- Genus Monticolina Soares, 1944 accepted as Pseudopachylus Roewer, 1913
- Genus Moogenia Mello-Leitão, 1935 accepted as Collonychium Bertkau, 1880
- Genus Moojenia Mello-Leitão, 1935 accepted as Collonychium Bertkau, 1880
- Genus Moreira Roewer, 1930 accepted as Sphaerobunus Roewer, 1917
- Genus Moreiranula Roewer, 1930
- Genus Multumbo Roewer, 1928
- Genus Nanophareus Roewer, 1929
- Genus Napostygnus Roewer, 1929
- Genus Nemastygnus Roewer, 1929
- Genus Nemoribalta Mello-Leitão, 1942 accepted as Cearinus Roewer, 1929
- Genus Neoancistrotus Mello-Leitão, 1927
- Genus Neobourguyia Mello-Leitão, 1940 accepted as Metamitobates Roewer, 1913
- Genus Neogonyleptes Roewer, 1913
- Genus Neogonyleptoides Roewer, 1913 accepted as Neogonyleptes Roewer, 1913
- Genus Neomitobates Roewer, 1913 accepted as Metamitobates Roewer, 1913
- Genus Neomitobatoides Mello-Leitão, 1933 accepted as Neoancistrotus Mello-Leitão, 1927
- Genus Neopachyloides Roewer, 1913
- Genus Neopachylus Roewer, 1913
- Genus Neopachylus Mello-Leitão, 1935 accepted as Nesopachylus Chamberlin, 1925
- Genus Neopucrolia Roewer, 1913 accepted as Eusarcus Perty, 1833
- Genus Neopucroliella Roewer, 1931
- Genus Neosadocus Mello-Leitão, 1926
- Genus Neotrochanteroceros Canals, 1943 accepted as Gyndulus Roewer, 1929
- Genus Nesopachylus Chamberlin, 1925
- Genus Nicteroia Mello-Leitão, 1935 accepted as Collonychium Bertkau, 1880
- Genus Nictheroia Mello-Leitão, 1932 accepted as Collonychium Bertkau, 1880
- Genus Nictheroya Mello-Leitão, 1926 accepted as Collonychium Bertkau, 1880
- Genus Nictheroya Mello-Leitão, 1926, nom. nud. accepted as Collonychium Bertkau, 1880
- Genus Nunduavius Mello-Leitão, 1936 accepted as Neopachylus Roewer, 1913
- Genus Nygoleptes Mello-Leitão, 1931 accepted as Sphaerobunus Roewer, 1917
- Genus Oglobinia Mello-Leitão, 1937 accepted as Ogloblinia Canals, 1933
- Genus Oglobinius Mello-Leitão, 1935 accepted as Ogloblinia Canals, 1933
- Genus Ogloblinia Canals, 1933
- Genus Oliverius Soares & Soares, 1946
- Genus Olynthus Sørensen, 1932 accepted as Spinopilar Mello-Leitão, 1940
- Genus Opisthoplatus Holmberg, 1878
- Genus Opisthoplites Sørensen, 1884
- Genus Opisthoplithes Mello-Leitão, 1935 accepted as Opisthoplites Sørensen, 1884
- Genus Opysthoplytes Mello-Leitão, 1926 accepted as Opisthoplites Sørensen, 1884
- Genus Orguesia Roewer, 1913 accepted as Eusarcus Perty, 1833
- Genus Osasco Piza, 1938 accepted as Bourguyia Mello-Leitão, 1923
- Genus Osornogyndes Maury, 1993
- Genus Otuquisa Roewer, 1928
- Genus Oxyrhina Soares, 1944 accepted as Rhioxyna Soares & Bauab, 1970
- Genus Oxyrhyna accepted as Oxyrhina Soares, 1944
- Genus Pachiloidellus Mello-Leitão, 1939 accepted as Pachyloidellus Müller, 1917
- Genus Pachyleptes Mello-Leitão, 1932 accepted as Liogonyleptoides Mello-Leitão, 1925
- Genus Pachylibunus Roewer, 1913
- Genus Pachylla Roewer, 1959 accepted as Ceropachylus Mello-Leitão, 1942
- Genus Pachylobos Toledo Piza, 1940
- Genus Pachyloidellus Müller, 1917
- Genus Pachyloides Holmberg, 1887
- Genus Pachylometoides Mello-Leitão, 1936 accepted as Megapachylus Roewer, 1913
- Genus Pachylospeleus Silhavy, 1974
- Genus Pachylus Kollar in Koch, 1839
- Genus Pachylusius Mello-Leitão, 1949
- Genus Pajeuia Kury, Bernabé, Ázara, Araujo & Benedetti, 2022
- Genus Palcapachylus Roewer, 1952
- Genus Palcares Roewer, 1957
- Genus Papageia Roewer, 1943 accepted as Eusarcus Perty, 1833
- Genus Parabalta Roewer, 1913
- Genus Parabristoweia Piza, 1938 accepted as Hypophyllonomus Giltay, 1928
- Genus Paradiscocyrtus Mello-Leitão, 1927
- Genus Paragoniosoma Araujo-da-Silva, DeSouza & DaSilva, 2020
- Genus Paragonyleptes Roewer, 1913 accepted as Collonychium Bertkau, 1880
- Genus Parahernandria Goodnight & Goodnight, 1947 accepted as Hernandria Banks, 1909
- Genus Paraluederwaldtia Mello-Leitão, 1927
- Genus Parampheres Roewer, 1913
- Genus Paranabius Roewer, 1943 accepted as Progonyleptoides Roewer, 1917
- Genus Paranaincola Soares, 1943 accepted as Roeweria Mello-Leitão, 1923
- Genus Paranaleptes Soares & Soares, 1947
- Genus Paranastus Roewer, 1943 accepted as Sphaerobunus Roewer, 1917
- Genus Paraorguesia Mello-Leitão, 1927 accepted as Graphinotus Koch, 1839
- Genus Parapachylibunus Mello-Leitão, 1935
- Genus Parapachyloides Roewer, 1913
- Genus Parapachylus Roewer, 1913 accepted as Acanthoprocta Loman, 1899
- Genus Paraphalangodus Roewer, 1915
- Genus Paraprosontes Soares & Soares, 1947
- Genus Paraproweyhia Soares & Soares, 1947 accepted as Hernandaria Sørensen, 1884
- Genus Parapucrolia Roewer, 1917
- Genus Pararezendesius Soares, 1972
- Genus Parasadocus Mello-Leitão, 1927 accepted as Discocyrtus Holmgren, 1878
- Genus Paratricommatus Piza, 1943
- Genus Pareusarcus Mello-Leitão, 1935 accepted as Eusarcus Perty, 1833
- Genus Pareusarcus Roewer, 1929
- Genus Passosa Roewer, 1928
- Genus Pegada Roewer, 1930 accepted as Megapachylus Roewer, 1913
- Genus Pegadana Strand, 1942 accepted as Megapachylus Roewer, 1913
- Genus Penygorna Mello-Leitão, 1936 accepted as Mischonyx Bertkau, 1880
- Genus Peristocnemis Roewer, 1923 accepted as Pristocnemis Koch, 1839
- Genus Pertyana Mello-Leitão, 1927 accepted as Parampheres Roewer, 1913
- Genus Petrocchia Mello-Leitão, 1933 accepted as Pachyloidellus Müller, 1917
- Genus Phaera Silhavý, 1978 accepted as Pherania Strand, 1942
- Genus Phalacrobunus Roewer, 1943 accepted as Glysterus Roewer, 1931
- Genus Phalacus
- Genus Phalangochilus Mello-Leitão, 1938
- Genus Phalangodellopsis Soares & Soares, 1954 accepted as Cryptogeobius Mello-Leitão, 1935
- Genus Phera Sørensen, 1932 accepted as Pherania Strand, 1942
- Genus Pherania Strand, 1942
- Genus Philocrates
- Genus Piassagera Roewer, 1928
- Genus Pichitus Roewer, 1959
- Genus Pindaiba Canals, 1943 accepted as Eusarcus Perty, 1833
- Genus Pinocchio Mello-Leitão, 1940 accepted as Bresslauius Mello-Leitão, 1935
- Genus Pirahya Roewer, 1949 accepted as Cryptogeobius Mello-Leitão, 1935
- Genus Piraquara Piza, 1943 accepted as Progonyleptoidellus Piza, 1940
- Genus Piresa Roewer, 1928 accepted as Triglochinura Mello-Leitão, 1924
- Genus Pirunipygus Roewer, 1936
- Genus Pizaius Soares, 1942 accepted as Ampheres Koch, 1839
- Genus Planiphalangodus Roewer, 1929
- Genus Platygndes accepted as Platygyndes Roewer, 1943
- Genus Platygyndes Roewer, 1943
- Genus Poecilosophus Mello-Leitão & Araujo Feio, 1949
- Genus Polyacanthoprocta Mello-Leitão, 1927
- Genus Polybunos Piza, 1943 accepted as Neosadocus Mello-Leitão, 1926
- Genus Pristocnemis Koch, 1839
- Genus Pristocnemus Koch, 1839 accepted as Pristocnemis Koch, 1839
- Genus Pristocnemys Mello-Leitão, 1935 accepted as Pristocnemis Koch, 1839
- Genus Proampheres Roewer, 1913
- Genus Proampycus Roewer, 1917 accepted as Hernandaria Sørensen, 1884
- Genus Proctobunoides Mello-Leitão, 1944
- Genus Progoniosoma Roewer, 1913 accepted as Goniosoma Perty, 1833
- Genus Progonissoma Mello-Leitão, 1932 accepted as Goniosoma Perty, 1833
- Genus Progonyleptes Roewer, 1913
- Genus Progonyleptoidellus Piza, 1940
- Genus Progonyleptoides Roewer, 1917
- Genus Progonyleptoides Mello-Leitão, 1922 accepted as Liogonyleptoides Mello-Leitão, 1925
- Genus Progyndes Roewer, 1917
- Genus Promitobates Roewer, 1913
- Genus Promitobatoides Mello-Leitão, 1927 accepted as Promitobates Roewer, 1913
- Genus Propachylus Roewer, 1913 accepted as Discocyrtus Holmgren, 1878
- Genus Prosampycoides Soares & Bauab-Vianna, 1972 accepted as Goodnightiella Soares & Soares, 1946
- Genus Prosampycus Mello-Leitão, 1935 accepted as Ogloblinia Canals, 1933
- Genus Prosancistrotus
- Genus Prosodreana Giltay, 1928 accepted as Ampheres Koch, 1839
- Genus Proweyhia Mello-Leitão, 1927 accepted as Acrogonyleptes Roewer, 1917
- Genus Pseudoacrogonyleptoides Soares, 1966 † accepted as Acrogonyleptes Roewer, 1917
- Genus Pseudoacrographinotus Soares, 1966
- Genus Pseudogyndes Mello-Leitão, 1932
- Genus Pseudogyndesoides Soares, 1944
- Genus Pseudoneogonyleptoides Soares, 1945 accepted as Carlotta Roewer, 1943
- Genus Pseudopachylus Roewer, 1913
- Genus Pseudophalangodes Roewer, 1912
- Genus Pseudophalangodus Mello-Leitão, 1935 accepted as Pseudophalangodes Roewer, 1912
- Genus Pseudophchylus Mello-Leitão, 1935 accepted as Pseudopachylus Roewer, 1913
- Genus Pseudopucrolia Roewer, 1912
- Genus Pseudotriaenosoma Mello-Leitão, 1927 accepted as Pseudopucrolia Roewer, 1912
- Genus Pseudotrogulus Roewer, 1932
- Genus Pucrolia Sørensen, 1895
- Genus Pucrolioides Roewer, 1913 accepted as Eusarcus Perty, 1833
- Genus Pucroloides Roewer, 1913
- Genus Pucroloides Mello-Leitão, 1923 accepted as Eusarcus Perty, 1833
- Genus Pulocria Mello-Leitão, 1935
- Genus Punagraphinotus Soares & Bauab, 1973
- Genus Punrunata Roewer, 1952
- Genus Pyatan DaSilva & Gnaspini, 2009
- Genus Pygophalangodus Mello-Leitão, 1931
- Genus Pygosomoides Mello-Leitão, 1933 accepted as Acutisoma Roewer, 1913
- Genus Qorimayus Acosta, 2020
- Genus Quitete Mello-Leitão, 1936 accepted as Ogloblinia Canals, 1933
- Genus Quixaba Mello-Leitão, 1944 accepted as Carlotta Roewer, 1943
- Genus Quixabella Mello-Leitão, 1949 accepted as Carlotta Roewer, 1943
- Genus Rezendezius Soares, 1945
- Genus Rhioxyna Soares & Bauab, 1970 accepted as Acanthopachylopsis Soares & Soares, 1949
- Genus Riosegundo Canals, 1943
- Genus Roeweria Mello-Leitão, 1923
- Genus Rooma Goodnight, 1942 accepted as Glysterus Roewer, 1931
- Genus Ruschia Mello-Leitão, 1940
- Genus Sadocus Sørensen in Koch (Keyserling), 1886
- Genus Saladonus Roewer, 1928
- Genus Schenkelibunus Strand, 1932 accepted as Friburgoia Mello-Leitão, 1932
- Genus Schubartesia Soares, 1944 accepted as Inhuma Piza, 1938
- Genus Segadasius Mello-Leitão, 1949 accepted as Despirus Roewer, 1929
- Genus Segundolus Roewer, 1949
- Genus Senu Carvalho & Kury, 2021
- Genus Serracutisoma Roewer, 1930 accepted as Acutisoma Roewer, 1913
- Genus Sertaneja Saraiva, Hara & DaSilva, 2021
- Genus Sibbolus Roewer, 1929 accepted as Sibollus Roewer, 1929
- Genus Sibollus Roewer, 1929
- Genus Siltaya Mello-Leitão, 1949 accepted as Friburgoia Mello-Leitão, 1932
- Genus Singram Mello-Leitão, 1937
- Genus Soaresia Soares, 1946
- Genus Soaresula Roewer, 1949 accepted as Poecilosophus Mello-Leitão & Araujo Feio, 1949
- Genus Sodreana Mello-Leitão, 1922
- Genus Soerensenia Mello-Leitão, 1926 accepted as Sphaerobunus Roewer, 1917
- Genus Soerensenibunus Strand, 1942 accepted as Spinopilar Mello-Leitão, 1940
- Genus Soerenseniopilio Strand, 1942 accepted as Eugyndes Roewer, 1913
- Genus Soerensenolynthus Soares & Soares, 1947 accepted as Spinopilar Mello-Leitão, 1940
- Genus Soerensia Mello-Leitão, 1935 accepted as Sphaerobunus Roewer, 1917
- Genus Sokkupia Mello-Leitão, 1949 accepted as Junicus Goodnight & Goodnight, 1947
- Genus Spelaeosoma Mello-Leitão, 1933 accepted as Goniosoma Perty, 1833
- Genus Sphaerobunus Roewer, 1917
- Genus Sphalepopachylus Mello-Leitão, 1933 accepted as Pachyloidellus Müller, 1917
- Genus Sphaleropachylus Mello-Leitão, 1926 accepted as Pachyloidellus Müller, 1917
- Genus Spinivunus Roewer, 1943
- Genus Spinopilar Mello-Leitão, 1940
- Genus Spraleropachylus Mello-Leitão, 1949 accepted as Pachyloidellus Müller, 1917
- Genus Stefanesia Soares & Soares, 1988 accepted as Inhuma Piza, 1938
- Genus Stenoprostygnus Piza, 1940 accepted as Pristocnemis Koch, 1839
- Genus Stephanocranion Mello-Leitão, 1931 accepted as Gonyleptellus Roewer, 1930
- Genus Stignobates Mello-Leitão, 1926 accepted as Stygnobates Mello-Leitão, 1926
- Genus Stygnobates Mello-Leitão, 1926
- Genus Styloleptes Piza, 1943
- Genus Stylopisthos Roewer, 1930
- Genus Stylopteptes Piza, 1943 accepted as Styloleptes Piza, 1943
- Genus Tabatinguera Mello-Leitão, 1935 accepted as Parapachyloides Roewer, 1913
- Genus Tachus Sørensen, 1932 accepted as Tachusina Strand, 1942
- Genus Tachusina Strand, 1942
- Genus Taguara Rambla, 1978 accepted as Taquara Mello-Leitão, 1936
- Genus Tapacochana Roewer, 1957
- Genus Taquara Mello-Leitão, 1936
- Genus Tarmapachylus Roewer, 1956
- Genus Tarmopachylus Roewer, 1956 accepted as Tarmapachylus Roewer, 1956
- Genus Taulisa Roewer, 1956
- Genus Tayoca Mello-Leitão, 1938 accepted as Triglochinura Mello-Leitão, 1924
- Genus Temucus Roewer, 1943
- Genus Thaumatoleptes Roewer, 1930
- Genus Thaumatopachylus Roewer, 1929
- Genus Theliospelta Mello-Leitão, 1937 accepted as Sodreana Mello-Leitão, 1922
- Genus Theresopolis accepted as Graphinotus Koch, 1839
- Genus Thereza Roewer, 1943
- Genus Therezopachylus Soares, 1972 accepted as Taquara Mello-Leitão, 1936
- Genus Therezopolis Mello-Leitão, 1923 accepted as Graphinotus Koch, 1839
- Genus Thorellidia Mello-Leitão, 1931 accepted as Neopucroliella Roewer, 1931
- Genus Tibangara Mello-Leitão, 1940
- Genus Tingomaria Mello-Leitão & Araujo Feio, 1949
- Genus Titanoleptes Kury & Bernabé, 2023
- Genus Triaenomeros Roewer, 1913
- Genus Triaenoplus Roewer, 1943 accepted as Glysterus Roewer, 1931
- Genus Triaenosoma Roewer, 1913 accepted as Pseudopucrolia Roewer, 1912
- Genus Tribunosoma Roewer, 1943
- Genus Trichominua Mello-Leitão, 1938
- Genus Tricommatus Roewer, 1912
- Genus Triglochinura Mello-Leitão, 1924
- Genus Trochanteroceros Canals, 1934 accepted as Gyndulus Roewer, 1929
- Genus Tuchusina Strand, 1942 accepted as Tachusina Strand, 1942
- Genus Tumbesia Loman, 1899
- Genus Tupacarana Mello-Leitão, 1939
- Genus Ubatubesia Soares, 1944
- Genus Ubatubesiopsis Soares & Soares, 1954 accepted as Ubatubesia Soares, 1944
- Genus Ullia Roewer, 1943 accepted as Carlotta Roewer, 1943
- Genus Unduavius Roewer, 1929
- Genus Uracantholeptes Mello-Leitão, 1926
- Genus Urodiabunus Mello-Leitão, 1935
- Genus Uropachylus Mello-Leitão, 1922
- Genus Varzellinia Mello-Leitão, 1942 accepted as Metarthrodes Roewer, 1913
- Genus Victoriaincola Soares & Soares, 1946
- Genus Vitiches Roewer, 1928 accepted as Graphinotus Koch, 1839
- Genus Voriax Kury, 2014
- Genus Weghia Mello-Leitão, 1940 accepted as Geraecormobius Holmberg, 1887
- Genus Wehyia accepted as Geraecormobius Holmberg, 1887
- Genus Weyhia Roewer, 1913 accepted as Geraecormobius Holmberg, 1887
- Genus Wygodzinskya Soares & B.A. Soares, 1945 accepted as Graphinotus Koch, 1839
- Genus Wygodzinskyia Soares & Soares, 1945 accepted as Graphinotus Koch, 1839
- Genus Xenoleptes Mello-Leitão, 1942 accepted as Sphaerobunus Roewer, 1917
- Genus Xulapona Mello-Leitão, 1936 accepted as Lyogoniosoma Mello-Leitão, 1926
- Genus Xundarava Mello-Leitão, 1927 accepted as Mischonyx Bertkau, 1880
- Genus Xuraloius Mello-Leitão, 1935 accepted as Neopachylus Roewer, 1913
- Genus Ypiranga Mello-Leitão, 1922 accepted as Uropachylus Mello-Leitão, 1922
- Genus Ypsilonurus Mello-Leitão, 1933
- Genus Yraguara Mello-Leitão, 1937
- Genus Zalanodius Mello-Leitão, 1936
- Genus Zalonius Mello-Leitão, 1936 accepted as Ampheres Koch, 1839
- Genus Zalonodius Mello-Leitão, 1936 accepted as Zalanodius Mello-Leitão, 1936
- Genus Ziltaia Mello-Leitão, 1936 accepted as Friburgoia Mello-Leitão, 1932
- Genus Zortalia Mello-Leitão, 1936
- 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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