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
- Subphylum Crustacea
- Subphylum Hexapoda
- Class Collembola
- Class Diplura
- Class Entognatha accepted as Hexapoda
- Class Insecta
- Order Alienoptera † accepted as Blattodea
- Order Amphiesmenoptera incertae sedis †
- Order Anoplura accepted as Phthiraptera
- Order Archaeognatha
- Order Archaeorthoptera (awaiting allocation) †
- Order Archaeorthoptera incertae sedis
- Order Argentinoptera †
- Order Blattodea
- Order Blattoptera †
- Order Caloneurida
- Order Caloneurodea †
- Order Cnemidolestodea †
- Order Coleoptera
- Order Coxoplectoptera †
- Order Dermaptera
- Order Diaphanopterodea †
- Order Diaphanopteroidea accepted as Diaphanopterodea †
- Order Dicliptera †
- Order Dicondylia incertae sedis
- Order Dictyoptera (awaiting allocation)
- Order Dictyoptera incertae sedis
- Order Diptera
- Order Embiodea
- Order Endopterygota incertae sedis
- Order Eoblattida †
- Order Ephemeroptera
- Order Eugeroptera †
- Order Geraroptera †
- Order Geroptera †
- Order Glosselytrodea †
- Order Grylloblattodea
- Order Hemiptera
- Family Acanaloniidae
- Family Acanthosomatidae Signoret, 1864
- Family Achilidae Stål, 1866
- Family Achilixiidae
- Family Aclerdidae
- Family Adelgidae Schouteden, 1909
- Family Adocimycolidae Poinar & Vega, 2023 †
- Family Aenictopecheidae
- Family Aetalionidae
- Family Agalliidae
- Family Aleyrodidae Westwood, 1840
- Family Alydidae Amyot & Serville, 1843
- Family Aneuridae
- Family Anoeciidae
- Family Anthocephalidae Kaddumi, 2005 †
- Family Anthocoridae Fieber, 1837
- Family Aphalaridae
- Family Aphelocheiridae
- Family Aphididae Latreille, 1802
- Family Aphidomorpha incertae sedis
- Family Aphrophoridae Amyot & Serville, 1843
- Family Aphylidae
- Family Apiomorphidae
- Family Apticoccidae Vea & Grimaldi, 2015 †
- Family Aradidae Spinola, 1837
- Family Archegocimicidae †
- Family Archescytinidae †
- Family Archiconiopterygidae Ansorge, 1996 †
- Family Archijassidae Becker-Migdisova, 1962 †
- Family Artheneidae
- Family Asiaticaphididae Żyła & Wegierek, 2020 †
- Family Asterolecaniidae
- Family Aviorrhynchidae Nel, Bourgoin, Engel & Szwedo in Nel et al., 2013 †
- Family Bajsaphididae Homan, Żyła & Wegierek, 2015 †
- Family Beesoniidae
- Family Belostomatidae Leach, 1815
- Family Bernaeidae †
- Family Berytidae Fieber, 1851
- Family Biturritiidae
- Family Blissidae Stål, 1862
- Family Boreoscytidae †
- Family Burmitaphididae Poinar & Brown, 2005 †
- Family Caliscelidae Amyot & Serville, 1843
- Family Callaphididae
- Family Calophyidae Vondráček, 1957
- Family Canadaphididae Richards, 1966 †
- Family Canopidae
- Family Cantacaderidae
- Family Capsidae
- Family Carayonemidae
- Family Carsidaridae
- Family Ceratocombidae
- Family Cercopidae Leach, 1815
- Family Cercopionidae †
- Family Cerococcidae
- Family Chiliocyclidae †
- Family Cicadellidae Latreille, 1825
- Family Cicadidae Batsch, 1789
- Family Cicadoidae accepted as Cicadidae Batsch, 1789
- Family Cicadoidea incertae sedis
- Family Cicadoprosbolidae †
- Family Cimicidae
- Family Cixiidae Spinola, 1839
- Family Clastopteridae Dohrn, 1859
- Family Coccidae
- Family Coleoscytidae †
- Family Colobathristidae
- Family Conchaspididae
- Family Coreidae Leach, 1815
- Family Corixidae Leach, 1815
- Family Creaphididae †
- Family Cryptococcidae
- Family Cryptorhamphidae
- Family Cryptostemmatidae
- Family Cuneocoridae †
- Family Curaliidae Schuh, Weirauch & Henry, 2008
- Family Curvicubitidae Hong, 1984 †
- Family Cydnidae Billberg, 1820
- Family Cymidae
- Family Cyrtocoridae
- Family Dactylopiidae
- Family Delphacidae Leach, 1815
- Family Deltocephalidae
- Family Derbidae Spinola, 1839
- Family Derbridae accepted as Derbidae Spinola, 1839
- Family Diaspididae
- Family Dictyopharidae Spinola, 1839
- Family Dinglidae Szwedo & Drohojowska in Drohojowska et al., 2020 † accepted as Miralidae Shcherbakov, 2020 †
- Family Dinidoridae
- Family Dipsocoridae
- Family Dorytocidae Emeljanov & Shcherbakov, 2018 †
- Family Dracaphididae Hong, Zhang, Guo & Heie, 2009 †
- Family Drepanosiphidae
- Family Dunstaniidae Tillyard, 1916 †
- Family Dysmorphoptilidae Handlirsch, 1906 †
- Family Ebboidae Perrichot, Nel, Guilbert & Neraudeau, 2006 †
- Family Elasmodemidae
- Family Electrococcidae Koteja, 2000 †
- Family Elektraphididae †
- Family Enicocephalidae Stål, 1860
- Family Epipygidae Hamilton, 2001
- Family Eriococcidae
- Family Eriosomatidae accepted as Aphididae Latreille, 1802
- Family Errhomenellidae
- Family Eumenotidae
- Family Eurybrachidae Stål, 1862
- Family Eurybrachyidae accepted as Eurybrachidae Stål, 1862
- Family Eurymelidae
- Family Evacanthidae
- Family Flatidae Spinola, 1839
- Family Fulgoridae Latreille, 1807
- Family Fulgorididae † accepted as Fulgoridiidae Handlirsch, 1939 †
- Family Fulgoridiidae Handlirsch, 1939 †
- Family Fulgoromorpha incertae sedis
- Family Gelastocoridae Kirkaldy, 1897
- Family Genaphididae †
- Family Gengidae
- Family Geocoridae Bärensprung, 1860
- Family Gerridae Leach, 1815
- Family Granulidae Hong, 1980 †
- Family Greenideidae
- Family Halimococcidae
- Family Hammanococcidae Koteja & Azar, 2008 †
- Family Hebridae Amyot & Serville, 1843
- Family Helotrephidae
- Family Hemiptera (awaiting allocation)
- Family Hemiptera incertae sedis
- Family Henicocoridae
- Family Hermatobatidae
- Family Heterogastridae Stål, 1872
- Family Heteroptera incertae sedis †
- Family Hispanocaderidae Golub, Popov & Arillo, 2012 †
- Family Hodgsonicoccidae Vea & Grimaldi, 2015 †
- Family Homaphididae accepted as Hormaphididae
- Family Homotomidae Heslop-Harrison, 1958
- Family Hormaphididae
- Family Hydrometridae
- Family Hylicellidae Evans, 1956 †
- Family Hylicidae
- Family Hyocephalidae
- Family Hypochthonellidae
- Family Hypsipterygidae
- Family Idioceridae
- Family Idiostolidae
- Family Ignotalidae Riek, 1973 †
- Family Ignotingidae Zhang, Golub, Popov & Shcherbakov, 2005 †
- Family Ingruidae †
- Family Inkaidae †
- Family Inoderbidae Shcherbakov & Emeljanov, 2021 †
- Family Ipsviciidae †
- Family Isolitaphidae Poinar, 2017 †
- Family Isometopidae
- Family Issidae Spinola, 1839
- Family Jankotejacoccidae Szwedo, Azar et Sendi, 2025 †
- Family Jascopidae †
- Family Jassidae
- Family Joppeicidae
- Family Jubisentidae Zhang, Ren & Yao, 2019 †
- Family Juraphididae Zyla, Blagoderov & Wegierek, 2014 †
- Family Jurocallidae Żyła & Wegierek, 2020 †
- Family Karabasiidae †
- Family Karanabidae †
- Family Katlasidae Luo, Jiang & Szwedo, 2020 †
- Family Kermesidae
- Family Kerridae accepted as Kerriidae Lindinger, 1937
- Family Kerriidae Lindinger, 1937
- Family Kinnaridae Muir, 1925
- Family Kobdocoridae Popov, 1986 †
- Family Kozariidae Vea & Grimaldi, 2015 †
- Family Kuwaniidae MacGillivray, 1921 †
- Family Lachnidae Koch, 1857
- Family Lalacidae Hamilton, 1990 †
- Family Largidae
- Family Latiscutellidae Pinto & Ornellas, 1974 † accepted as Cydnidae Billberg, 1820
- Family Lebanococcidae Koteja & Azar, 2008 †
- Family Lecanodiaspididae
- Family Ledridae accepted as Cicadellidae Latreille, 1825
- Family Leotichiidae
- Family Leptopodidae Brullé, 1836
- Family Lestoniidae
- Family Liadopsyllidae Martynov, 1927 †
- Family Ligavenidae †
- Family Liviidae Loew, 1879
- Family Lodevopsyllidiidae Boderau, Garrouste & Nel, 2024 †
- Family Lophopidae Stål, 1866
- Family Lutevanaphididae Szwedo, Lapeyrie & Nel, 2015 †
- Family Lygaeidae Schilling, 1829
- Genus Abanus Distant, 1909 accepted as Dieuches Dohrn, 1860
- Genus Aborsillus Barber, 1954
- Genus Abpamphantus Barber, 1954
- Genus Acanthocrompus Scudder, 1958
- Genus Achlyosomus Slater, 1992
- Genus Acompus Fieber, 1860
- Genus Aellopideus Seidenstücker, 1963
- Genus Aellopus Wolff, 1811
- Genus Afraethalotus Scudder, 1963
- Genus Afromydrus Scudder, 1968
- Genus Afrovertanus Scudder, 1962
- Genus Aglaochrimnus Slater, 1992
- Genus Allocentrum Bergroth, 1894
- Genus Allotrophora Slater & Brailovsky, 1983
- Genus Andercnemodus Brailovsky & Cervantes-Peredo, 2011
- Genus Andringitra Villiers, 1971
- Genus Anepsiodes Reuter, 1882
- Genus Anneckecoris Slater, 1982
- Genus Anochrostomus Slater, 1992
- Genus Anommatocoris China, 1945
- Genus Anorthuna Strand, 1928 accepted as Nysius Dallas, 1852
- Genus Anorthus Horváth, 1890 accepted as Nysius Dallas, 1852
- Genus Antillocoris Kirkaldy, 1904
- Genus Antillodema Slater, 1980
- Genus Aoploscelis Fieber, 1860
- Genus Apterola Mulsant & Rey, 1866
- Genus Apteroloides Slater, 1964
- Genus Apterula Mancini, 1942
- Genus Aradacrates Slater & Wilcox, 1968
- Genus Aradademus Slater, 1967
- Genus Arcleda Malipatil, 1982
- Genus Arimacoris Baranowski & Slater, 1987
- Genus Aristaenetoides Kondorosy, 2006
- Genus Armenoecus Kiritshenko & Scudder, 1973 †
- Genus Arrategma Woodward, 1953
- Genus Artheneis Spinola, 1837
- Genus Ashlockaria Harrington, 1980
- Genus Aspilocoryphus Stål, 1874
- Genus Astacops Boisduval in d'Urville, 1835
- Genus Atractophora Stål, 1853 accepted as Pachygrontha Germar, 1840
- Genus Atrademus Slater, 1967
- Genus Atrazonotus Slater & Ashlock, 1966
- Genus Aulacoblissus Slater, 1986
- Genus Ausogeocoris Malipatil, 2013
- Genus Austroclerada Malipatil, 1982
- Genus Austronysius Ashlock, 1967
- Genus Bacacephalus Harrington, 1980
- Genus Baeocoris Slater, 1983
- Genus Balboa Distant, 1893
- Genus Barademus Slater, 1967
- Genus Barberia Miller, 1951
- Genus Barnsleyia Corrêa, 1956
- Genus Belonochilus Uhler, 1871
- Genus Beosus Amyot & Serville, 1843
- Genus Bethylimorphus Lindberg, 1954
- Genus Bexicoris Scudder, 1969
- Genus Bianchiella Reuter, 1908
- Genus Biblochrimnus Brailovsky, 1982
- Genus Bledionotus Reuter, 1878
- Genus Bleteogonus Reuter, 1885
- Genus Blissiella Slater, 1967
- Genus Blissus Burmeister, 1835
- Genus Bocundostethus Scudder, 1962
- Genus Bogdiana Kerzhner in Bei-Bienko, 1964
- Genus Botocudo Kirkaldy, 1904
- Genus Brachydrymus Gross, 1965
- Genus Brachylygaeus Gross, 1965 accepted as Melanerythrus Stål, 1868
- Genus Brachynysius Usinger, 1942 accepted as Nysius Dallas, 1852
- Genus Brachyplax Fieber, 1860
- Genus Brailovskyocoris Slater, 1993
- Genus Brentiscerus Scudder, 1962
- Genus Bryanella China, 1930
- Genus Bryanellocoris Slater, 1957
- Genus Bubaces Distant, 1893
- Genus Caenoblissus Barber, 1958 accepted as Dimorphopterus Stål, 1872
- Genus Caenocoris Fieber, 1860
- Genus Caenopamera Barber, 1918
- Genus Calotargemus Scudder, 1978
- Genus Calyptonotus Douglas & Scott, 1865 accepted as Aphanus Laporte, 1832
- Genus Camptocera Jakovlev, 1877
- Genus Camptocoris Puton, 1886
- Genus Camptonotus Jakovlev, 1885
- Genus Camptotelus Fieber, 1860
- Genus Capenicola Slater & Sweet, 1970
- Genus Capitostylus Malipatil, 2013
- Genus Capodemus Slater & Sweet, 1972 †
- Genus Caprhiobia Scudder, 1962
- Genus Caprochromus Scudder, 1968
- Genus Caridops Bergroth, 1894
- Genus Carpilis Stål, 1874
- Genus Carvalhodrymus Slater, 1995
- Genus Caveloblissus Slater & Wilcox, 1968
- Genus Caymanis Baranowski & Brambila, 2001
- Genus Cephalocoris Heer, 1853
- Genus Cerocrompus Scudder, 1958
- Genus Cervicoris Slater, 1982
- Genus Cesacoris Koçak & Kemal, 2010
- Genus Chelochirus Spinola, 1839
- Genus Chilacis Fieber, 1864
- Genus Cistalia Stål, 1874
- Genus Claudinerobius Brailovsky, 1978
- Genus Clerada Signoret in Maillard, 1862
- Genus Clerocarbus Scudder, 1969
- Genus Clidoceras Agassiz, 1846 accepted as Kleidocerys Stephens, 1829
- Genus Cligenes Distant, 1893
- Genus Cnemodus Herrich-Schäffer, 1850
- Genus Congolorgus Scudder, 1962
- Genus Cordillonotus Scudder, 1984
- Genus Craspeduchus Stål, 1874
- Genus Critobulus Distant, 1903 accepted as Dieuches Dohrn, 1860
- Genus Crompus Stål, 1874
- Genus Crophius Stål, 1874
- Genus Cryphula Stål, 1874
- Genus Cryptocara Bergroth, 1916
- Genus Cryptocarella Slater, 1957
- Genus Cuyonysius Dellapé & Henry, 2020
- Genus Cymapamphantus Henry, 2013
- Genus Cymoderma
- Genus Cymoninus Breddin, 1907
- Genus Cymophyes Fieber, 1870
- Genus Cyrtocnemodon Eyles & Scudder, 1968
- Genus Dalmochrimnus Brailovsky, 1982
- Genus Darwinocoris Slater, 1962
- Genus Dasythisus Wagner, 1964
- Genus Delochilocoris Bergroth, 1893
- Genus Dermatinoides Slater & Sweet, 1973
- Genus Dieuches Dohrn, 1860
- Genus Dilophos Montrouzier, 1864 accepted as Pachygrontha Germar, 1840
- Genus Dilophus Montrouzier, 1864 accepted as Pachygrontha Germar, 1840
- Genus Dimorphopterus Stål, 1872
- Genus Dinomachellus Scudder, 1957
- Genus Diomphalus Fieber, 1864
- Genus Distadieuches Scudder, 1968
- Genus Distingphyses Scudder, 1962
- Genus Domiduca Distant, 1918 accepted as Pylorgus Stål, 1874
- Genus Dorachosa Distant, 1893 accepted as Delochilocoris Bergroth, 1893
- Genus Drymophilus Douglas & Scott, 1865 accepted as Drymus Fieber, 1860
- Genus Drymus Fieber, 1860
- Genus Dudia Bergroth, 1918
- Genus Dushinckanus Brailovsky, 1979
- Genus Dycoderus Uhler, 1901
- Genus Ectyphoscelus Eyles, 1968
- Genus Eilatus Linnavuori, 1972
- Genus Ektyphonotus Slater, 1992
- Genus Elasmothanellus Scudder, 1962
- Genus Elongatomannus Varga & Kondorosy, 2013 accepted as Vertomannus Distant, 1903
- Genus Emblethis Fieber, 1860
- Genus Embolimus Marshall, 1868 accepted as Emblethis Fieber, 1860
- Genus Eminocoris Eyles, 1967
- Genus Engistus Fieber, 1864
- Genus Entisberus Distant, 1903
- Genus Epelytes Kirkaldy, 1910
- Genus Eranchiellus Scudder, 1957
- Genus Ereminellus Harrington, 1980
- Genus Eremocoris Fieber, 1860
- Genus Esinerus Scudder, 1969
- Genus Esmun Distant, 1909 accepted as Dimorphopterus Stål, 1872
- Genus Esuridea Reuter, 1890
- Genus Esuris Stål, 1874
- Genus Euhemerus Distant, 1909 accepted as Dimorphopterus Stål, 1872
- Genus Euoxycarenus Samy, 1969
- Genus Euparomius Hegde, 1990
- Genus Eurynysius Ashlock, 1967
- Genus Exopamera Distant, 1918
- Genus Exopamerana Malipatil, 1978
- Genus Exptochiomera Barber, 1928
- Genus Extraramorphus Slater, Ashlock & Wilcox, 1969
- Genus Facicoris Kiritshenko & Scudder, 1973
- Genus Froeschneria Harrington, 1980
- Genus Gastrodes Westwood, 1840
- Genus Gelastoblissus Slater & Wilcox, 1968 †
- Genus Gemmacoris Baranowski & Slater, 1987
- Genus Geoblissus Hidaka, 1959
- Genus Geocoris Fallén, 1814
- Genus Glyptonysius Usinger, 1942
- Genus Gonatas Distant, 1882
- Genus Gonatoides Slater, 1957
- Genus Gondarius Štys, 1972
- Genus Gonianotus Fieber, 1860
- Genus Gonionotus Marshall, 1868
- Genus Graphoraglius Wagner, 1961
- Genus Gurnardobaya Popov, 2019 †
- Genus Hadrocnemis Jakovlev, 1882
- Genus Hadrosomus Slater, 1992
- Genus Harmosticana Miller, 1957
- Genus Hasanobochrus Ghauri, 1982
- Genus Hemidiptera Léon, 1890 accepted as Nysius Dallas, 1852
- Genus Henestaris Spinola, 1837
- Genus Henetaris Agassiz, 1846
- Genus Henicopamerana Malipatil, 1986
- Genus Heraeus Stål, 1862
- Genus Heteroblissus Barber, 1954
- Genus Heterogaster Schilling, 1829
- Genus Hidakacoris Tomokuni, 1998
- Genus Hirtomydrus Scudder, 1978
- Genus Hispanocoris Costas & Vazquez, 1999
- Genus Holcocranum Fieber, 1860
- Genus Horvathiolus Josifov, 1965
- Genus Hovania Horváth, 1924 accepted as Pylorgus Stål, 1874
- Genus Howdenoblissus Štys, 1991
- Genus Humilocoris Harrington, 1980
- Genus Hyalochilus Fieber, 1860
- Genus Hyalocoris Jakolev, 1874
- Genus Hyalonysius Slater, 1962
- Genus Ibexocoris Scudder, 1963
- Genus Icteronysius Usinger, 1942
- Genus Icus Fieber, 1860
- Genus Idiostolus Berg, 1883
- Genus Idiotropus Berg, 1883
- Genus Incrassoceps Scudder, 1978
- Genus Insulicola Kirkaldy, 1908
- Genus Iodinus Lindberg, 1927
- Genus Ischnodemus Fieber, 1837
- Genus Ischnomorphus Hidaka, 1961
- Genus Ischnopeza Fieber, 1860
- Genus Ischnorhynchus Fieber, 1860
- Genus Ischnotarsus Fieber, 1860 accepted as Dieuches Dohrn, 1860
- Genus Isopeltus Gross, 1965 accepted as Brentiscerus Scudder, 1962
- Genus Isthmocoris McAtee, 1914
- Genus Jakowleffia Puton, 1875
- Genus Kanadayana Scudder, 1963
- Genus Kanigara Distant, 1906
- Genus Karachicoris Štys, 1972
- Genus Kidundastethus Scudder, 1962
- Genus Kleidocerus Burmeister, 1835 accepted as Kleidocerys Stephens, 1829
- Genus Kleidocerys Stephens, 1829
- Genus Kolenetrus Barber, 1918
- Genus Koscocrompus Scudder, 1958
- Genus Kualisompus Scudder, 1962
- Genus Lachnesthus Bergroth, 1915
- Genus Lamprodema Fieber, 1860
- Genus Lampronotus Douglas & Scott, 1868
- Genus Lamproplax Douglas & Scott, 1868
- Genus Lampropunctus Scudder, 1971 †
- Genus Lasiocoris Fieber, 1860
- Genus Latochrimnus Brailovsky, 1982
- Genus Leionysius Usinger, 1942
- Genus Lemuriblissus Slater, 1967 †
- Genus Lepionysius Ashlock, 1967
- Genus Lepiorsillus Malipatil, 1979
- Genus Leptodemus Reuter, 1900
- Genus Lethaeastroides Malipatil & Woodward, 1989
- Genus Lethaeograndellus Scudder, 1962
- Genus Lethaeus Dallas, 1852
- Genus Ligyrocoris Stål, 1872
- Genus Linnaea Scudder, 1890 †
- Genus Liolobus Reuter, 1885
- Genus Longihaustrum Woodward, 1953 accepted as Tomocoris Woodward, 1953
- Genus Lucerocoris Slater, 1968
- Genus Lygaeodon Puton, 1869 accepted as Spilostethus Stål, 1868
- Genus Lygaeosoma Spinola, 1837
- Genus Lygaeospilus Barber, 1921
- Genus Lygaeus Fabricius, 1794
- Genus Lygeosoma Spinola, 1837
- Genus Lygeus Rafinesque, 1815 accepted as Lygaeus Fabricius, 1794
- Genus Lyginus Rafinesque, 1815 accepted as Lygaeus Fabricius, 1794
- Genus Macchiademus Slater & Wilcox, 1973 †
- Genus Macellocoris Slater, 1962 accepted as Acanthocrompus Scudder, 1958
- Genus Macroparius Stål, 1872 accepted as Nysius Dallas, 1852
- Genus Macropterna Fieber, 1860
- Genus Macropternella Slater, 1957
- Genus Madrorgus Scudder, 1962
- Genus Malezonotus Barber, 1918
- Genus Malipatilius Kondorosy, 2013
- Genus Malleochrimnus Brailovsky, 1982
- Genus Manatanus Distant, 1909 accepted as Scolopostethus Fieber, 1860
- Genus Marmottania Puton, 1887
- Genus Masoas Distant, 1906
- Genus Maxaphanus Distant, 1918 accepted as Dieuches Dohrn, 1860
- Genus Megacholula Harrington, 1980
- Genus Megalonotus Fieber, 1860
- Genus Megapamera Scudder, 1975
- Genus Melacoryphus Slater, 1988
- Genus Melanerythrus Stål, 1868
- Genus Melanopleuroides Slater & Baranowski, 2001
- Genus Melanopleurus Stål, 1874
- Genus Melanospilus Stål, 1868
- Genus Melanotelus Reuter, 1885
- Genus Merinademus Slater, 1967
- Genus Mesostates Reuter, 1884 accepted as Pylorgus Stål, 1874
- Genus Metadieuches Distant, 1918
- Genus Metastenothorax Reuter, 1884
- Genus Metopoplax Fieber, 1860
- Genus Metrarga White, 1878
- Genus Micaredemus Slater, 1967 †
- Genus Microlugenocoris Scudder, 1962
- Genus Micropus Spinola, 1837 accepted as Ischnodemus Fieber, 1837
- Genus Microtoma Laporte, 1832
- Genus Microtomideus Reuter, 1885
- Genus Micrymenus Bergroth, 1921
- Genus Migdilybs Hesse, 1925
- Genus Mizaldus Distant, 1901
- Genus Montaltus Distant, 1888 accepted as Astacops Boisduval in d'Urville, 1835
- Genus Myodacanthus Dellapé, 2012
- Genus Myodocha Latreille, 1807
- Genus Myodochus Olivier, 1811 accepted as Myodocha Latreille, 1807
- Genus Nanoplinthisus Wagner, 1963
- Genus Naphiellus Scudder, 1962
- Genus Napoblissus Brailovsky & Barrera, 2012
- Genus Neacoryphus Scudder, 1965
- Genus Neaplax Slater, 1974
- Genus Neocamptotelus Hoberlandt, 1987
- Genus Neocnemodus Dellapé & Malipatil, 2012
- Genus Neocrompus China, 1930
- Genus Neocymus Van Duzee, 1932
- Genus Neodudia Scudder, 1978
- Genus Neoentisberus Scudder, 1968
- Genus Neomizaldus Scudder, 1968
- Genus Neoninus Distant, 1882
- Genus Neopamera Harrington, 1980
- Genus Neortholomus Hamilton, 1983
- Genus Neosuris Barber, 1924
- Genus Neoxanthochilus Wagner, 1956
- Genus Neseis Kirkaldy, 1900
- Genus Nesocryptias Kirkaldy, 1908
- Genus Nesomartis Kirkaldy, 1907
- Genus Nesopamera Barber, 1958
- Genus Nesostethus Kirkaldy, 1908
- Genus Neurocladus Fieber, 1860
- Genus Ninomimus Lindberg, 1934
- Genus Ninyas Distant, 1882
- Genus Nithecus Horváth, 1890
- Genus Nithecus Amyot, 1846 accepted as Nithecus Horváth, 1890
- Genus Nocellochromus Scudder, 1963
- Genus Notiocola Slater & Sweet, 1970
- Genus Notochilus Fieber, 1864
- Genus Noualhieria Puton, 1889
- Genus Nympholethaeus Woodward, 1959
- Genus Nysius Dallas, 1852
- Genus Oceanides Kirkaldy, 1910
- Genus Ochrimnus Stål, 1874
- Genus Oedancala Amyot & Serville, 1843
- Genus Ommatoplinthisus Carapezza, 1984
- Genus Oncopeltus Stål, 1868
- Genus Ophthalmicus Schilling, 1829
- Genus Orbellis Distant, 1913
- Genus Oreolorgus Scudder, 1962
- Genus Oreonysius Usinger, 1952
- Genus Orieotrechus Scudder, 1962
- Genus Orsillacis Barber, 1914
- Genus Orsillus Dallas, 1851
- Genus Orthochrimnus Slater, 1992
- Genus Oxycarenus Fieber, 1837
- Genus Ozophora Uhler, 1871
- Genus Pachybrachius Hahn, 1826
- Genus Pachygrontha Germar, 1840
- Genus Pamerana Distant, 1909
- Genus Panaorus Kirichenko, 1951
- Genus Paracholula Harrington, 1980
- Genus Paracnemodus Slater in Hanström, Brinck & Rudebeck, 1964
- Genus Paradema Slater, 1980
- Genus Paradieuches Distant, 1883
- Genus Paramirrhina Malipatil, 1983
- Genus Paraninus Scudder, 1957
- Genus Parapactye Malipatil, 1983
- Genus Parapamerana Malipatil, 1981
- Genus Parapamphantus Barber, 1954
- Genus Paraparomius Harrington, 1980
- Genus Parapolycrates Reuter, 1885
- Genus Paraporta Zheng in Zheng & Zou, 1981
- Genus Parastilbocoris Carayon, 1964
- Genus Parochrimnus Slater, 1992
- Genus Paromius Fieber, 1860
- Genus Paurocoris Slater, 1980
- Genus Peliosoma Uhler, 1860 accepted as Pachygrontha Germar, 1840
- Genus Pephysena Distant, 1882
- Genus Perigenes Distant, 1893
- Genus Peritrechus Fieber, 1860
- Genus Peritrochus Douglas & Scott, 1876 accepted as Peritrechus Fieber, 1860
- Genus Petissius Distant, 1893
- Genus Petizius Lethierry & Severin, 1894
- Genus Pezocoris Jakowlew, 1875
- Genus Phaeochrimnus Slater, 1992
- Genus Phibalocoris Miller, 1949
- Genus Philomyrmex Sahlberg, 1848
- Genus Phlegyas Stål, 1865
- Genus Phoroneus Stål, 1865
- Genus Physonysius Usinger, 1942
- Genus Piezoscelis Fieber, 1870
- Genus Pilusomydrus Scudder, 1969 †
- Genus Pionosomus Fieber, 1860
- Genus Piosomus Marshall, 1868
- Genus Pirkimerus Distant, 1903
- Genus Plinthisomus Fieber, 1864
- Genus Plinthisus Westwood in Stephens, 1829
- Genus Plochiomera Say, 1831
- Genus Polyacanthus Laporte, 1832
- Genus Polycligenes Scudder, 1962
- Genus Porander Gross, 1962
- Genus Porrectolethaeus Scudder, 1971
- Genus Praetorblissus Slater, 1966
- Genus Prehensocoris Harrington, 1988
- Genus Procellademus Slater & Wilcox, 1966
- Genus Procymus Usinger, 1940 †
- Genus Proderus Amyot, 1846 accepted as Proderus Fieber, 1860
- Genus Proderus Fieber, 1860
- Genus Propinquidemus Slater, 1986
- Genus Prosomoeus Scott, 1874
- Genus Prytanes Distant, 1893
- Genus Pseudoblissus Slater, 1979
- Genus Pseudocnemodus Barber, 1911
- Genus Pseudomenus Ashlock & Slater, 1982
- Genus Pseudopachybrachius Malipatil, 1978
- Genus Pseudopamera Distant, 1882
- Genus Pseudoparomius Harrington, 1980
- Genus Pseudoxycarenus Samy, 1969
- Genus Psileula Seidenstücker, 1964
- Genus Pterotmetus Amyot & Serville, 1843
- Genus Ptertometus Puton, 1878
- Genus Ptilocamptocera Wagner, 1961
- Genus Ptochiomera Say, 1831
- Genus Ptochomera Agassiz, 1846 accepted as Ptochiomera Say, 1831
- Genus Pulmomerus Cervantes-Peredo & Brailovsky, 2012
- Genus Pygaeus Uhler, 1894 accepted as Antillocoris Kirkaldy, 1904
- Genus Pylorgus Stål, 1874
- Genus Pyrrhobaphus Stål, 1868
- Genus Ragliodes Reuter, 1885
- Genus Raglius Stål, 1872
- Genus Raglius Amyot, 1846 accepted as Raglius Stål, 1872
- Genus Ramadademus Slater, 1967 †
- Genus Regatarma Woodward, 1953
- Genus Reticulatodemus Slater & Wilcox, 1966 †
- Genus Reticulatonysius Malipatil, 2005
- Genus Retrodrymus Gross, 1965
- Genus Rhiobia Bergroth, 1918 accepted as Pylorgus Stål, 1874
- Genus Rhodiginus Distant, 1901
- Genus Rhyparachromus Signoret, 1861 accepted as Rhyparochromus Hahn, 1826
- Genus Rhyparochromus Hahn, 1826
- Genus Rhyparochromus Curtis, 1836 accepted as Megalonotus Fieber, 1860
- Genus Rhyparothesus Scudder, 1962
- Genus Rhypodes Stål, 1868
- Genus Riggiella Kormilev, 1949
- Genus Robinsonocoris Kormilev, 1952
- Genus Rollathemus Scudder, 1963
- Genus Romicpus Reed, 1900 accepted as Ischnodemus Fieber, 1837
- Genus Ruavatua Miller, 1957
- Genus Rugomenus Ashlock, 1985
- Genus Salacia Stål, 1874 accepted as Botocudo Kirkaldy, 1904
- Genus Salaciola Bergroth, 1906
- Genus Saxicoris Slater, 1970
- Genus Scansidemus Slater & Wilcox, 1969
- Genus Schuhocoris Slater, 1985
- Genus Scintillademus Slater, 1968
- Genus Scintillocoris Slater & Brailovsky, 1993
- Genus Scolopostethus Fieber, 1860
- Genus Scoloposthetus
- Genus Scopiastella Slater, 1957
- Genus Siniasinensis Scudder, 1968
- Genus Sinierus Distant, 1901
- Genus Sinorsillus Usinger, 1938
- Genus Sisammes Lethierry & Severin, 1894 accepted as Sisamnes Distant, 1893
- Genus Sisamnes Distant, 1893
- Genus Slaterobius Harrington, 1980
- Genus Sphragisticus Stål, 1872
- Genus Spilostethus Stål, 1868
- Genus Spingernotus Scudder, 1984
- Genus Spinigernotus
- Species Spinigernotus simulatus (Barber, 1918)
- Genus Stalagmostethus Stål, 1868
- Genus Stalaria Harrington, 1980
- Genus Staphylocoris Stichel, 1958 accepted as Ischnodemus Fieber, 1837
- Genus Stenaptula Seidenstücker, 1964
- Genus Stenoblissus Wagner & Slater, 1964 accepted as Dimorphopterus Stål, 1872
- Genus Stenocoris Rambur, 1839 accepted as Paromius Fieber, 1860
- Genus Stenophthalmicus Costa, 1875
- Genus Stictolethaeus O'Donnell, 1991
- Genus Stilbocoris Bergroth, 1893
- Genus Stridulocoris Harrington, 1980
- Genus Stygnocoris Douglas & Scott, 1865
- Genus Stygnocorisella Hoberlandt, 1956
- Genus Stygnus Fieber, 1860 accepted as Stygnocoris Douglas & Scott, 1865
- Genus Sweetocoris O'Rourke, 1974 †
- Genus Sweetolethaeus Slater, 1972 †
- Genus Sylvadrymus Le Quesne, 1956
- Genus Talpoblissus Slater & Wilcox, 1973 †
- Genus Tamasanka Distant, 1906
- Genus Tempereocoris Pericart, 1995
- Genus Tempyra Stål, 1874
- Genus Tenuicoris Slater & Harrington, 1974
- Genus Terenocoris Slater, 1980
- Genus Testudodrymus Slater, 1993
- Genus Tethallotrum Scudder, 1962
- Genus Thops Gistl, 1848 accepted as Ischnodemus Fieber, 1837
- Genus Thoraea Dellapé & Montemayor, 2011
- Genus Thunbergia Horváth, 1914
- Genus Thylochromus Barber, 1928
- Genus Thyrothanus Scudder, 1957
- Genus Togo Bergroth, 1906
- Genus Togodolentus Barber, 1918
- Genus Tomocoris Woodward, 1953
- Genus Tomocoroides Woodward, 1963
- Genus Toonglasa Distant, 1893
- Genus Torvochrimnus Brailovsky, 1982
- Genus Trachinocoris Slater, 1980
- Genus Trachynysius Usinger, 1942
- Genus Trapezonotus Fieber, 1860
- Genus Trichaphanus Kiritschenko, 1926
- Genus Tropicoparapamphantus Brailovsky, 1989
- Genus Tropidophlebia Kerzhner & Yachevskii in Bei-Bienko, 1964
- Genus Tropidostethus Marshall, 1868
- Genus Tropidothorax Bergroth, 1894
- Genus Tropinysius Wagner, 1958 accepted as Nysius Dallas, 1852
- Genus Tropistethus Fieber, 1860
- Genus Tuitocoris Peredo, 2012
- Genus Udeocoris Bergroth, 1918
- Genus Uhleriola Horváth, 1908
- Genus Unicageocoris Malipatil, 2013
- Genus Urvaschia Hopp, 1987
- Genus Valesuris Barber, 1949
- Genus Valonetus Barber, 1918
- Genus Valtissius Barber, 1918
- Genus Walkothignus Scudder, 1968 †
- Genus Woodwardiastes Slater, 1985
- Genus Xanthochilus Stål, 1872
- Genus Xanthochilus Amyot, 1846 accepted as Xanthochilus Stål, 1872
- Genus Xenoblissus Barber, 1954
- Genus Xestocoris Van Duzee, 1906
- Genus Xestonotellus Horváth, 1914 accepted as Scopiastella Slater, 1957
- Genus Xyonysius Ashlock & Lattin, 1963
- Genus Zeridoneus Barber, 1918
- Genus Zeropamera Barber, 1949
- Genus Zygocellus Brailovsky, 2021
- Genus Zygochrimnus Brailovsky, 2018
- Family Machaeroidae accepted as Machaerotidae Stål, 1866
- Family Machaerotidae Stål, 1866
- Family Macrodrilidae Poinar, 2020 †
- Family Macropsidae accepted as Cicadellidae Latreille, 1825
- Family Macroveliidae
- Family Madeoveliidae
- Family Magnacicadiidae †
- Family Maguviopseidae Shcherbakov, 2011 †
- Family Malcidae Stål, 1866
- Family Malmopsyllidae Becker-Migdisova, 1985 †
- Family Margarodidae
- Family Matsucoccidae
- Family Medocostidae
- Family Meenoplidae
- Family Megarididae
- Family Membracidae Rafinesque, 1815
- Family Meschiidae Malipatil, 2014
- Family Mesogereonidae †
- Family Mesopentacoridae †
- Family Mesotrephidae †
- Family Mesoveliidae Douglas & Scott, 1867
- Family Micrococcidae
- Family Micronectidae Jaczewski, 1924
- Family Microphysidae
- Family Mimarachnidae Shcherbakov, 2007 †
- Family Mindaridae
- Family Minlagerrontidae Chen, Szwedo & Wang, 2019 †
- Family Miralidae Shcherbakov, 2020 †
- Family Miridae Hahn, 1831
- Family Monophlebidae Signoret, 1875
- Family Myerslopiidae
- Family Nabidae Costa, 1853
- Family Naucoridae Leach, 1815
- Family Neazoniidae Szwedo, 2007 †
- Family Neopsylloididae †
- Family Nepidae Latreille, 1802
- Family Nepoidea incertae sedis
- Family Nicomiidae
- Family Ninidae
- Family Nogodinidae Melichar, 1898
- Family Notonectidae Latreille, 1802
- Family Ochteridae Kirkaldy, 1906
- Family Ochteroidea incertae sedis †
- Family Omaniidae Cobben, 1970
- Family Ortheziidae Amyot & Serville, 1843
- Family Oviparosiphidae Shaposhnikov, 1979 †
- Family Oxycarenidae
- Family Pachygronthidae
- Family Pachymeridiidae †
- Family Pachynomidae Stål, 1873
- Family Palaeoaphididae †
- Family Palaeoleptidae Poinar, 2009 †
- Family Palaeontinidae Handlirsch, 1906 †
- Family Palaeotanyrhinidae Poinar, Brown & Kóbor, 2022 †
- Family Paraknightiidae Evans, 1950 †
- Family Paraphrynoveliidae
- Family Paraprotopsyllidiidae Hakim, Azar, Szwedo, Drohojowska & Huang, 2021 †
- Family Parvaverrucosidae Poinar & Brown, 2006 †
- Family Pbyllocephalidae accepted as Pentatomidae Leach, 1815
- Family Peataspidae
- Family Peloridiidae
- Family Pemphigidae accepted as Aphididae Latreille, 1802
- Family Pennygullaniidae Koteja & Azar, 2008 †
- Family Pentatomidae Leach, 1815
- Family Pereboriidae Zalessky, 1930 †
- Family Perforissidae Shcherbakov, 2007 †
- Family Permoridiidae Burckhardt, Nel, Raisch, Poschmann, 2022 †
- Family Phacopteronidae
- Family Phenacoleachiidae
- Family Phloeidae
- Family Phoenicococcidae
- Family Phyllocephalidae accepted as Pentatomidae Leach, 1815
- Family Phylloxeridae Herrich-Schaeffer, 1854
- Family Phymatidae
- Family Piesmatidae
- Family Piesmidae accepted as Piesmatidae
- Family Pincombeidae †
- Family Pityococcidae
- Family Plataspidae
- Family Plataspididae accepted as Plataspidae
- Family Pleidae
- Family Plokiophilidae
- Family Polyctenidae
- Family Postopsyllidiidae Hakim, Azar & Huang, 2019 †
- Family Pricecoridae Pinto & Ornellas, 1974 † accepted as Cydnidae Billberg, 1820
- Family Primipentatomidae Yao, Cai, Rider & Ren, 2013 †
- Family Probascaniidae †
- Family Procercopidae Handlirsch, 1906 †
- Family Progonocimicidae Handlirsch, 1906 †
- Family Propreocoridae Popov, Dolling & Whalley, 1994 †
- Family Prosbolecicadidae †
- Family Prosbolidae Handlirsch, 1906 †
- Family Prosbolopseidae †
- Family Protocoridae †
- Family Protopsyllidiidae Becker-Migdisova, 1960 †
- Family Pseudococcidae Heymons, 1915
- Family Psyliidae accepted as Psyllidae Latreille, 1807
- Family Psyllidae Latreille, 1807
- Family Pterocimicidae †
- Family Putoidae
- Family Pyrrhocoridae
- Family Qinococcidae Wu, 2022
- Family Rasnitsynaphididae Homan & Wegierek, 2011 †
- Family Reduviidae Latreille, 1807
- Family Rhopalidae
- Family Rhyparochromidae Amyot & Serville, 1843
- Family Ricaniidae Amyot & Audinet-Serville, 1843
- Family Saldidae
- Family Scaphocoridae †
- Family Schizopteridae Reuter, 1891
- Family Scutelleridae Leach, 1815
- Family Scytinopteridae Handlirsch, 1906 †
- Family Scytinopteroidea incertae sedis †
- Family Serpentivenidae †
- Family Shaposhnikoviidae †
- Family Shurabellidae †
- Family Simulaphididae Shcherbakov, 2007 †
- Family Sinaphididae Zhang et al., 1989 †
- Family Sinoalidae Wang & Szwedo, 2012 †
- Family Sinojuraphididae Huang & Nel, 2008 †
- Family Steingeliidae Morrison, 1927 †
- Family Stemmocryptidae
- Family Stenocephalidae
- Family Stenoviciidae Evans, 1956 †
- Family Stictococcidae
- Family Surijokocixiidae Shcherbakov, 2000 †
- Family Szeiiniidae Zhang, Jiang, Szwedo & Zhang, 2021 †
- Family Tachardiidae
- Family Taimyrocoridae Popov, 2016 †
- Family Tajmyraphididae Kononova, 1975 †
- Family Termitaphididae
- Family Tessaratomidae Stål, 1865
- Family Tettigarctidae Distant, 1905
- Family Tettigellidae
- Family Tettigometridae
- Family Thaumastellidae
- Family Thaumastocoridae Kirkaldy, 1908
- Family Thelaxidae
- Family Thyreocoridae
- Family Tibicinidae
- Family Tingidae Laporte, 1833
- Family Tingididae accepted as Tingidae Laporte, 1833
- Family Torirostratidae Yao, Cai, Shih & Engel, 2014 †
- Family Triassocoridae Tillyard, 1922 †
- Family Triozidae Loew, 1879
- Family Tropiduchidae Stål, 1866
- Family Typhlocybidae accepted as Cicadellidae Latreille, 1825
- Family Ulopidae accepted as Cicadellidae Latreille, 1825
- Family Urostylidae Dallas, 1851 accepted as Urostylididae
- Family Urostylididae
- Family Veliidae Amyot & Serville, 1843
- Family Velocipedidae Bergroth, 1891
- Family Venicoridae Yao, Ren & Cai, 2012 † accepted as Kobdocoridae Popov, 1986 †
- Family Vetanthocoridae Yao, Cai & Ren, 2006 †
- Family Vianaididae
- Family Weiwoboidae Lin, Szwedo, Huang & Stroiński, 2010 †
- Family Xulsigiidae Szwedo, Weis & Nel, 2017 †
- Family Xylococcidae Pergrande, 1898
- Family Yetkhatidae Song, Szwedo & Bourgoin, 2019 †
- Family Yuripopovinidae Azar, Nel, Engel, Garrouste & Matocq, 2011 †
- Genus Lodevopsyllidium Boderau, Garrouste & Nel, 2024 †
- Order Homoptera accepted as Hemiptera
- Order Hymenoptera
- Order Hypoperlida †
- Order Insecta (awaiting allocation)
- Order Insecta incertae sedis
- Order Isoptera accepted as Blattodea
- Order Kukaloptera †
- Order Lepidoptera
- Order Lophioneurida †
- Order Mallophaga
- Order Mantodea
- Order Mantophasmatodea
- Order Mecoptera
- Order Mecopterida incertae sedis
- Order Megaloptera
- Order Megasecoptera †
- Order Miomoptera †
- Order Neoptera incertae sedis
- Order Neuroptera
- Order Neuropteroidea incertae sedis †
- Order Notoptera
- Order Odonata
- Order Odonatoptera (awaiting allocation) †
- Order Odonatoptera incertae sedis
- Order Orthoptera
- Order Orthopterida incertae sedis
- Order Palaeodictyoptera †
- Order Palaeoptera incertae sedis
- Order Panorthoptera incertae sedis
- Order Paoliida †
- Order Paraneoptera (awaiting allocation)
- Order Perielytrodea †
- Order Permopsocida †
- Order Permotrichoptera †
- Order Phasmatodea
- Order Phasmida accepted as Phasmatodea
- Order Phasmoptera accepted as Phasmatodea
- Order Phthiraptera
- Order Plecoptera
- Order Polyneoptera incertae sedis
- Order Protelytroptera †
- Order Protoblattoidea †
- Order Protocoleoptera † accepted as Protelytroptera †
- Order Protodonata †
- Order Protoelytroptera †
- Order Protohemiptera †
- Order Protohymenoptera †
- Order Protorthoptera †
- Order Protozygoptera †
- Order Psocoptera
- Order Raphidioptera
- Order Siphonaptera
- Order Skleroptera †
- Order Strepsiptera
- Order Tarachoptera †
- Order Thripida incertae sedis
- Order Thysanoptera
- Order Thysanura accepted as Insecta
- Order Titanoptera †
- Order Trichoptera
- Order Zoraptera
- Order Zygentoma
- Genus Bifarius Tasch, 1961 †
- Genus Cyclocephalus Tasch, 1961 †
- Genus Hypatocephala Tasch, 1961 †
- Genus Permolimulinella Tasch, 1963 †
- Genus Strongylocephalus Tasch, 1961 †
- Class Protura
- 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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