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
- Family Acartophthalmidae Czerny, 1928
- Family Acroceridae Leach, 1815
- Family Agromyzidae Fallén, 1823
- Family Alinkidae Krzemiński, 1992 † accepted as Procramptonomyiidae Kovalev, 1985 †
- Family Anisopidae accepted as Anisopodidae Knab, 1912
- Family Anisopodidae Knab, 1912
- Family Ansorgiidae Evenhuis, 1994 †
- Family Antefungivoridae Rohdendorf, 1938 †
- Family Anthomyiidae Latreille, 1829
- Family Anthomyzidae Czerny, 1903
- Family Apioceridae Bigot, 1857
- Family Apsilocephalidae Nagatomi, Saigusa, Nagatomi & Lyneborg, 1991
- Family Apystomyiidae Nagatomi & Liu, 1994
- Family Archisargidae Rohdendorf, 1951 †
- Family Architendipedidae Rohdendorf, 1962 † accepted as Ptychopteridae Osten Sacken, 1862
- Family Archizelmiridae Rohdendorf, 1962 †
- Family Asilidae Latreille, 1802
- Family Asiloidea incertae sedis
- Family Asiochaoboridae Hong & Wang, 1990 †
- Family Asteiidae Rondani, 1856
- Family Atelestidae Hennig, 1970
- Family Athericidae Nowicki, 1873
- Family Aulacigastridae Duda, 1924
- Family Australimyzidae Griffiths, 1972
- Family Austroleptidae Nagatomi, 1982
- Family Axymyiidae Shannon, 1921
- Family Bengaliidae Brauer & Bergenstamm, 1889
- Family Bibionidae Fleming, 1821
- Family Blephariceridae Loew, 1862
- Family Blepharoceridae accepted as Blephariceridae Loew, 1862
- Family Boholdoyidae Kovalev, 1985 †
- Family Bolithophilidae accepted as Bolitophilidae Winnertz, 1863
- Family Bolitophilidae Winnertz, 1863
- Family Bombylidae accepted as Bombyliidae Latreille, 1802
- Family Bombyliidae Latreille, 1802
- Family Borboridae Newman, 1834 accepted as Sphaeroceridae Macquart, 1835
- Family Brachystomatidae Melander, 1908
- Family Braulidae Egger, 1853
- Family Calliphoridae Brauer & Bergenstamm, 1889
- Family Camillidae Frey, 1921
- Family Campichoetidae Griffiths, 1972
- Family Canaceidae accepted as Canacidae Jones, 1906
- Family Canacidae Jones, 1906
- Family Canthyloscelidae Shannon, 1927
- Family Carnidae Newman, 1834
- Family Cascopleciidae Poinar, 2010 †
- Family Cecidomyiidae Newman, 1835
- Family Celyphidae Bigot, 1852
- Family Ceratopogonidae Newman, 1834
- Genus Acanthoconops Carter, 1921 accepted as Leptoconops Skuse, 1889
- Genus Acanthohelea Kieffer, 1917 accepted as Stilobezzia Kieffer, 1911
- Genus Adelohelea Borkent, 1995 †
- Genus Afrohelea Wirth, 1965
- Genus Afrostilobezzia Szadziewski & Dominiak, 2015
- Genus Agilihelea Yu, 2005
- Genus Alasion Rondani, 1857 accepted as Palpomyia Meigen, 1818
- Genus Alautunmyia Borkent, 1996 †
- Genus Allobezzia Kieffer, 1917 accepted as Bezzia Kieffer, 1899
- Genus Allohelea Kieffer, 1917
- Genus Alloimyia Yu, 2005
- Genus Alluaudomyia Kieffer, 1913
- Genus Amberaspinus Evenhuis, 1994 † accepted as Forcipomyia Meigen, 1818
- Genus Amerohelea Grogan & Wirth, 1981
- Genus Amossovia Glukhova, 1989 accepted as Culicoides Latreille, 1809
- Genus Anakempia Kieffer, 1924 accepted as Ceratopogon Meigen, 1803
- Genus Anebomyia Borkent, 2014
- Genus Anilomyia Vargas, 1960 accepted as Culicoides Latreille, 1809
- Genus Ankistrodactylus Ingram & Macfie, 1922 accepted as Homohelea Kieffer, 1917
- Genus Ankylohelea de Meillon & Wirth, 1987
- Genus Apelma Kieffer, 1917 accepted as Forcipomyia Meigen, 1818
- Genus Apogon Rondani, 1856 accepted as Alasion Rondani, 1857
- Genus Archiaustroconops Szadziewski, 1996 †
- Genus Archiculicoides Szadziewski, 1996 †
- Genus Aspinabezzia Dow & Turner, 1976 accepted as Bezzia Kieffer, 1899
- Genus Aspinus Hong, 1981 accepted as Amberaspinus Evenhuis, 1994 †
- Genus Atmobia Bigot, 1856 accepted as Serromyia Meigen, 1818
- Genus Atopomyia Yu & Liu, 2000 accepted as Atopopogon Borkent, Dominiak & Díaz, 2022
- Genus Atopopogon Borkent, Dominiak & Díaz, 2022 accepted as Forcipomyia Meigen, 1818
- Genus Atrichopogon Kieffer, 1906
- Genus Atriculicoides Remm, 1976 †
- Genus Atyphohelea Borkent, 1998
- Genus Austroconops Wirth & Lee, 1958
- Genus Austrohelea Wirth & Grogan, 1988
- Genus Austrosphaeromias Spinelli, 1997
- Genus Avaritia Fox, 1955 accepted as Culicoides Latreille, 1809
- Genus Baeodasymyia Clastrier & Raccurt, 1979
- Genus Baeohelea Wirth & Blanton, 1970
- Genus Bahiahelea Wirth, 1992
- Genus Baliohelea Yu & Liu, 2005 accepted as Forcipomyia Meigen, 1818
- Genus Baskintoconops Pielowska-Ceranowska, 2023 †
- Genus Bassoforcipomyia Debenham, 1987 accepted as Forcipomyia Meigen, 1818
- Genus Beltranmyia Vargas, 1953 accepted as Culicoides Latreille, 1809
- Genus Bessamyia Yu, 2005 accepted as Atrichopogon Kieffer, 1906
- Genus Bezzia Kieffer, 1899
- Genus Blantonia Wirth & Dow, 1971 accepted as Forcipomyia Meigen, 1818
- Genus Boreohelea Clastrier & Delécolle, 1990
- Genus Borkenthelea Spinelli & Grogan, 1993
- Genus Borkentimyia Yu, Liu, Liu, Liu, Hao, Yan & Zhao, 2005 accepted as Dasyhelea Kieffer, 1911
- Genus Bothahelea Grogan & Wirth, 1983
- Genus Bothamia Meiswinkel, 1987
- Genus Brachyconops Wirth, 1973 accepted as Leptoconops Skuse, 1889
- Genus Brachycretacea Szadziewski, 1996 †
- Genus Brachypogon Kieffer, 1899
- Genus Burmahelea Szadziewski & Sontag, 2019 †
- Genus Cacaohelea Wirth & Grogan, 1988
- Genus Calcarhelea Wirth & Grogan, 1988
- Genus Callotia Vargas & Kremer, 1972 accepted as Culicoides Latreille, 1809
- Genus Caloforcipomyia Saunders, 1957 accepted as Forcipomyia Meigen, 1818
- Genus Calyptopogon Kieffer, 1910
- Genus Camptopterohelea Wirth & Hubert, 1960
- Genus Capehelea de Meillon & Wirth, 1987
- Genus Centrorhynchus Lutz, 1913 accepted as Lasiohelea Kieffer, 1921
- Genus Centrotypus Grassi, 1900 accepted as Mycterotypus Noé, 1905
- Genus Cerapogon Rafinesque, 1815 accepted as Ceratopogon Meigen, 1803
- Genus Ceratobezzia Kieffer, 1917 accepted as Clinohelea Kieffer, 1917
- Genus Ceratoculicoides Wirth & Ratanawarabhan, 1971
- Genus Ceratohelea Wirth & Grogan, 1988
- Genus Ceratolophana Strand, 1928 accepted as Johannseniella Williston, 1907
- Genus Ceratolophus Kieffer, 1899 accepted as Johannseniella Williston, 1907
- Genus Ceratopalpomyia Szadziewski, 1988
- Genus Ceratopogon Meigen, 1803
- Genus Certrorhynchus accepted as Centrorhynchus Lutz, 1913
- Genus Chairopogon Yu, 2005 accepted as Culicoides Latreille, 1809
- Genus Chelohelea Giles & Wirth, 1985
- Genus Chimaerohelea Debenham, 1987 accepted as Meunierohelea Szadziewski, 1988
- Genus Clastrieromyia Spinelli & Grogan, 1985
- Genus Clinohelea Kieffer, 1917
- Genus Collessohelea Debenham, 1987 accepted as Forcipomyia Meigen, 1818
- Genus Congohelea Wirth & Grogan, 1988
- Genus Conopoides Agassiz, 1846 accepted as Culicoides Latreille, 1809
- Genus Cotocripus Brèthes, 1912 accepted as Culicoides Latreille, 1809
- Genus Crespinia Kieffer, 1923
- Genus Crispomyia Debenham, 1974
- Genus Cryptoscena Enderlein, 1936 accepted as Forcipomyia Meigen, 1818
- Genus Culicoides Latreille, 1809
- Genus Dacnoforcipomyia Chan & Saunders, 1965 accepted as Forcipomyia Meigen, 1818
- Genus Dasyhelea Kieffer, 1911
- Genus Debenhamia Wirth & Grogan, 1988 accepted as Stilobezzia Kieffer, 1911
- Genus Devalquia Choufani & Nel in Choufani et al., 2013 † accepted as Culicoides Latreille, 1809
- Genus Diaphanobezzia Ingram & Macfie, 1931
- Genus Dibezzia Kieffer, 1911
- Genus Dicrobezzia Kieffer, 1919 accepted as Probezzia Kieffer, 1906
- Genus Dicrohelea Kieffer, 1917 accepted as Johannsenomyia Malloch, 1915
- Genus Dicryptoscena Enderlein, 1936 accepted as Dasyhelea Kieffer, 1911
- Genus Didymophleps Weyenbergh, 1883 accepted as Forcipomyia Meigen, 1818
- Genus Diphaomyia Vargas, 1960 accepted as Culicoides Latreille, 1809
- Genus Diplohelea Kieffer, 1925 accepted as Ceratopogon Meigen, 1803
- Genus Diplosella Kieffer, 1921
- Genus Dolichohelea Edwards, 1929 accepted as Atrichopogon Kieffer, 1906
- Genus Downeshelea Wirth & Grogan, 1988
- Genus Downseshelea Wirth & Grogan, 1988 accepted as Downeshelea Wirth & Grogan, 1988
- Genus Drymodesmyia Vargas, 1960 accepted as Culicoides Latreille, 1809
- Genus Dycea Debenham, 1987 accepted as Forcipomyia Meigen, 1818
- Genus Echinohelea Macfie, 1940
- Genus Eohelea Petrunkevitch, 1957 †
- Genus Eopalpomyitis Hong, Guo & Ren, 2000 † accepted as Palpomyia Meigen, 1818
- Genus Eopalpomyitis Hong, 2002 † accepted as Eopalpomyitis Hong, Guo & Ren, 2000 †
- Genus Euforcipomyia Malloch, 1915 accepted as Forcipomyia Meigen, 1818
- Genus Eukraiohelea Ingram & Macfie, 1921 accepted as Stilobezzia Kieffer, 1911
- Genus Euprojoannisia Brèthes, 1914 accepted as Forcipomyia Meigen, 1818
- Genus Fanthamia De Meillon, 1939
- Genus Fastus Liu, 2005 accepted as Culicoides Latreille, 1809
- Genus Fittkauhelea Wirth & Blanton, 1970
- Genus Forcipohelea Clastrier & Delecolle, 1991 accepted as Forcipomyia Meigen, 1818
- Genus Forcipomyia Meigen, 1818
- Genus Fossihelea Szadziewski, 1988 †
- Genus Fossileptoconops Szadziewski, 1996 †
- Genus Gampsohelea Yu & Liu, 2005 accepted as Forcipomyia Meigen, 1818
- Genus Gedanohelea Szadziewski, 1988 †
- Genus Gerontodacus Borkent, 2019 †
- Genus Glaphiromyia Vargas, 1960 accepted as Culicoides Latreille, 1809
- Genus Gluhhovia Remm, 1976 accepted as Palpomyia Meigen, 1818
- Genus Groganhelea Spinelli & Dippolito in Spinelli, Dippolito & Wirth, 1995
- Genus Groganomyia Szadziewski & Dominiak, 2019 accepted as Culicoides Latreille, 1809
- Genus Guihelea Yu & Qian, 2005 accepted as Johannsenomyia Malloch, 1915
- Genus Gymnohelea Kieffer, 1921 accepted as Atrichopogon Kieffer, 1906
- Genus Haasiella Kieffer, 1913 accepted as Macropeza Meigen, 1818
- Genus Haematomyidium Goeldi, 1905 accepted as Culicoides Latreille, 1809
- Genus Haemophoructus Macfie, 1925 accepted as Culicoides Latreille, 1809
- Genus Hartomyia Malloch, 1915 accepted as Stilobezzia Kieffer, 1911
- Genus Hebetula Wirth & Debenham, 1977
- Genus Helea Meigen, 1800 accepted as Ceratopogon Meigen, 1803
- Genus Helea Osten Sacken, 1882 accepted as Ceratopogon Meigen, 1803
- Genus Heleageron Borkent, 1995 †
- Genus Herakleohelea Debenham, 1987 accepted as Forcipomyia Meigen, 1818
- Genus Heteroceratopogon Wirth & Grogan, 1988 accepted as Ceratopalpomyia Szadziewski, 1988
- Genus Heterohelea Clastrier, 1985
- Genus Heteromyia Say, 1825
- Genus Hetoromyia Schiner, 1868 accepted as Heteromyia Say, 1825
- Genus Hoffmania Fox, 1948 accepted as Culicoides Latreille, 1809
- Genus Holoconops Kieffer, 1918 accepted as Leptoconops Skuse, 1889
- Genus Homobezzia MacFie, 1932
- Genus Homohelea Kieffer, 1917
- Genus Hypsimyia Yu, 2005 accepted as Ceratopogon Meigen, 1803
- Genus ideshelea Wirth, 1994 accepted as Echinohelea Macfie, 1940
- Genus Impensukempia Yu in Liu, Yan, Liu, Hao, Liu & Yu, 2001 accepted as Atrichopogon Kieffer, 1906
- Genus Indobezzia Dasgupta & Saha, 1995
- Genus Isoecacta Garrett, 1925 accepted as Alluaudomyia Kieffer, 1913
- Genus Isohelea Kieffer, 1917 accepted as Brachypogon Kieffer, 1899
- Genus Isthmohelea Ingram & MacFie, 1931
- Genus Ixodehelea Yu & Liu, 2005 accepted as Forcipomyia Meigen, 1818
- Genus Japygahelea Yu & Liu, 2005 accepted as Forcipomyia Meigen, 1818
- Genus Jenkinshelea Macfie, 1934
- Genus Jenkinsia Kieffer, 1913 accepted as Jenkinshelea Macfie, 1934
- Genus Jilinocoides Chu, 1983 accepted as Culicoides Latreille, 1809
- Genus Joanseniella accepted as Johannseniella Williston, 1907
- Genus Johannseniella Williston, 1907 accepted as Serromyia Meigen, 1818
- Genus Johannsenomyia Malloch, 1915
- Genus Jordanoconops Szadziewski, 2000 †
- Genus Jordanocops Szadziewski, 2000 accepted as Jordanoconops Szadziewski, 2000 †
- Genus Kattangomyia Debenham, 1987 accepted as Forcipomyia Meigen, 1818
- Genus Kempia Kieffer, 1913 accepted as Atrichopogon Kieffer, 1906
- Genus Kiefferomyia Mayer, 1937 accepted as Schizohelea Kieffer, 1917
- Genus Kolenohelea de Meillon & Wirth, 1981
- Genus Labidomyia Stephens, 1829 accepted as Forcipomyia Meigen, 1818
- Genus Labidomyia Agassiz, 1846 accepted as Labidomyia Stephens, 1829
- Genus Lanatomyia Debenham, 1974
- Genus Lanehelea Wirth & Blanton, 1972
- Genus Lasiobezzia Kieffer, 1925
- Genus Lasiohelea Kieffer, 1921 accepted as Forcipomyia Meigen, 1818
- Genus Lebanoconops Szadziewski, 1996 † accepted as Minyohelea Borkent, 1995 †
- Species Lebanoconops lebanicus Szadziewski, 1996
- Species Lebanoconops minutus Szadziewski, 1996
- Species Lebanoconops wirthi Szadziewski, 1996
- Genus Lebanoculicoides Szadziewski, 1996 †
- Genus Leehelea Debenham, 1974
- Genus Lepidohelea Kieffer, 1917 accepted as Forcipomyia Meigen, 1818
- Genus Leptoconops Skuse, 1889
- Genus Leptohelea Wirth & Blanton, 1970
- Genus Lophomyidium Cordero, 1929 accepted as Atrichopogon Kieffer, 1906
- Genus Luciamyia De Meillon, 1937
- Genus Macfiehelea Lane, 1946 accepted as Pellucidomyia Macfie, 1939
- Genus Macfiella Fox, 1955 accepted as Culicoides Latreille, 1809
- Genus Mackerrasomyia Debenham, 1970
- Genus Macropeza Meigen, 1818
- Genus Macroptilum Becker, 1903 accepted as Macropeza Meigen, 1818
- Genus Macroptylum accepted as Macroptilum Becker, 1903
- Genus Macrurohelea Ingram & MacFie, 1931
- Genus Mallochohelea Wirth, 1962
- Genus Mantohelea Szadziewski, 1988 †
- Genus Marksomyia Bellis & Dyce, 2011 accepted as Culicoides Latreille, 1809
- Genus Mataemyia Vargas, 1960 accepted as Culicoides Latreille, 1809
- Genus Medeobezzia Yu, 1995 accepted as Neurobezzia Wirth & Ratanaworabhan, 1973
- Genus Megaconops Wirth & Atchley, 1973 accepted as Leptoconops Skuse, 1889
- Genus Meijerehelea Wirth & Hubert, 1961 accepted as Culicoides Latreille, 1809
- Genus Meloehelea Wirth, 1956 accepted as Atrichopogon Kieffer, 1906
- Genus Metacanthohelea Wirth & Grogan, 1988
- Genus Metaforcipomyia Saunders, 1956 accepted as Forcipomyia Meigen, 1818
- Genus Metahelea Edwards, 1929
- Genus Meunierohelea Szadziewski, 1988
- Genus Microconops Kieffer, 1921 accepted as Leptoconops Skuse, 1889
- Genus Microhelea Kieffer, 1917 accepted as Forcipomyia Meigen, 1818
- Genus Minyohelea Borkent, 1995 †
- Genus Miopalpomyia Pierce, 1966 † accepted as Palpomyia Meigen, 1818
- Genus Mixohelea Kieffer, 1917 accepted as Xenohelea Kieffer, 1917
- Genus Monoculicoides Khalaf, 1954 accepted as Culicoides Latreille, 1809
- Genus Monogedania Szadziewski, Grogan, Sontag & Bojarski, 2022 †
- Genus Monohelea Kieffer, 1917
- Genus Mycterotypus Noé, 1905 accepted as Leptoconops Skuse, 1889
- Genus Nannohelea Grogan & Wirth, 1980
- Genus Nelohelea Szadziewski & Sontag, 2019 †
- Genus Nemoromyia Liu & Yu, 1991 accepted as Palpomyia Meigen, 1818
- Genus Neobezzia Wirth & Ratanaworabhan, 1972
- Genus Neoculicoides Boorman & Lane, 1979 accepted as Culicoides Latreille, 1809
- Genus Neoforcipomyia Tokunaga, 1959 accepted as Forcipomyia Meigen, 1818
- Genus Neohelea Clastrier, 1988
- Genus Neopalpomyia Pierce, 1966 † accepted as Palpomyia Meigen, 1818
- Genus Neosphaeromias Das Gupta & Wirth, 1970
- Genus Neostilobezzia Goetghebuer in Goetghebuer & Lenz, 1934 accepted as Neostilobezzia Wirth, 1953
- Genus Neostilobezzia Wirth, 1953 accepted as Stilobezzia Kieffer, 1911
- Genus Neurobezzia Wirth & Ratanaworabhan, 1973
- Genus Neurohelea Kieffer, 1925
- Genus Nicothoehelea Yu & Liu, 2005 accepted as Nicothohelea Liu, Tang & Hao, 2002
- Genus Nicothohelea Liu, Tang & Hao, 2002 accepted as Forcipomyia Meigen, 1818
- Genus Nilobezzia Kieffer, 1921
- Genus Nilohelea Kieffer, 1921 accepted as Brachypogon Kieffer, 1899
- Genus Niphanohelea Grogan & Wirth, 1981
- Genus Notiohelea Grogan & Wirth, 1979
- Genus Notoceratopogon de Meillon & Downes, 1986
- Genus Nullicella Lee, 1982 accepted as Culicoides Latreille, 1809
- Genus Oecacta Poey, 1853 accepted as Culicoides Latreille, 1809
- Genus Oreinohelea Yu & Liu, 2005 accepted as Forcipomyia Meigen, 1818
- Genus Oxyhelea Kieffer, 1921 accepted as Culicoides Latreille, 1809
- Genus Oxyria Yu, 2005 accepted as Forcipomyia Meigen, 1818
- Genus Pachyhelea Wirth, 1959
- Genus Pachyleptus Walker, 1856 accepted as Heteromyia Say, 1825
- Genus Padrosia Rafinesque, 1815 accepted as Culicoides Latreille, 1809
- Genus Palaeobrachypogon Borkent, 1995 †
- Genus Palaeoconops Borkent, 2001 † accepted as Leptoconops Skuse, 1889
- Genus Paleotetragoneura Meunier, 1920 accepted as Stilobezzia Kieffer, 1911
- Genus Palpomyia Meigen, 1818
- Genus Panhelea Remm, 1980 accepted as Forcipomyia Meigen, 1818
- Genus Parabezzia Malloch, 1915
- Genus Paradasyhelea Macfie, 1940
- Genus Paralluaudomyia Clastrier, 1960 accepted as Alluaudomyia Kieffer, 1913
- Genus Parapalpomyia Pierce, 1966 † accepted as Palpomyia Meigen, 1818
- Genus Parapterobosca Harant, Huttel & Huttel, 1951 accepted as Forcipomyia Meigen, 1818
- Genus Parastilobezzia Wirth & Blanton, 1970
- Genus Parrotia Kieffer, 1923
- Genus Paryphoconus Enderlein, 1912
- Genus Pedilohelea de Meillon & Wirth, 1980 accepted as Forcipomyia Meigen, 1818
- Genus Pellucidomyia Macfie, 1939
- Genus Peronehelea Borkent, 1995 †
- Genus Phaenobezzia Haeselbarth, 1965
- Genus Phasmidohelea Mayer, 1937 accepted as Forcipomyia Meigen, 1818
- Genus Physohelea Grogan & Wirth, 1979
- Genus Phytohelea Remm, 1971 accepted as Forcipomyia Meigen, 1818
- Genus Pontoculicoides Remm & Zhogolev, 1968 accepted as Culicoides Latreille, 1809
- Genus Prionognathus Carter, Ingram & Macfie, 1921 accepted as Thysanognathus Ingram & MacFie, 1922
- Genus Prionomyia Stephens, 1829 accepted as Serromyia Meigen, 1818
- Genus Probezzia Kieffer, 1906
- Genus Proforcipomyia Saunders, 1956 accepted as Forcipomyia Meigen, 1818
- Genus Prohelea Kieffer, 1911 accepted as Forcipomyia Meigen, 1818
- Genus Prokempia Kieffer, 1913 accepted as Dasyhelea Kieffer, 1911
- Genus Proleptoconops Clastrier, 1974 accepted as Leptoconops Skuse, 1889
- Genus Prosapelma Kieffer, 1925 accepted as Culicoides Latreille, 1809
- Genus Protersesthes Kieffer, 1921 accepted as Leptoconops Skuse, 1889
- Genus Protoanisolarva Peñalver, Nel & Pérez-de la Fuente in Peñalver et al., 2022 †
- Genus Protoculicoides Boesel, 1937 †
- Genus Psammopogon Remm, 1979 accepted as Atrichopogon Kieffer, 1906
- Genus Pseudoculicoides Malloch, 1915 accepted as Dasyhelea Kieffer, 1911
- Genus Pseudostilobezzia Wirth & Ratanaworabhan, 1973
- Genus Psilohelca Kieffer, 1915 accepted as Psilohelea Kieffer, 1915
- Genus Psilohelea Kieffer, 1915 accepted as Ceratopogon Meigen, 1803
- Genus Psilokempia Enderlein, 1936 accepted as Atrichopogon Kieffer, 1906
- Genus Psychophaena Philippi, 1865 accepted as Culicoides Latreille, 1809
- Genus Pterobosca Macfie, 1932 accepted as Pterobosca Macfie, 1940
- Genus Pterobosca Macfie, 1940 accepted as Forcipomyia Meigen, 1818
- Genus Pygobezzia Remm, 1974 accepted as Bezzia Kieffer, 1899
- Genus Remmia Glukhova, 1977 accepted as Culicoides Latreille, 1809
- Genus Rhinohelea de Meillon & Wirth, 1979 accepted as Forcipomyia Meigen, 1818
- Genus Rhynchoforcipomyia Wirth & Dow, 1972 accepted as Forcipomyia Meigen, 1818
- Genus Rhynchohelea Wirth & Blanton, 1970
- Genus Rostropogon Remm, 1979 accepted as Atrichopogon Kieffer, 1906
- Genus Saliohelea Wirth & Ratanaworabhan, 1978 accepted as Forcipomyia Meigen, 1818
- Genus Sarissohelea Debenham, 1991 accepted as Brachypogon Kieffer, 1899
- Genus Schineromyia Debenham, 1987 accepted as Forcipomyia Meigen, 1818
- Genus Schizoconops Kieffer, 1918 accepted as Leptoconops Skuse, 1889
- Genus Schizodactylus Ingram & Macfie, 1921 accepted as Ankistrodactylus Ingram & Macfie, 1922
- Genus Schizoforcipomyia Chan & LeRoux, 1971 accepted as Forcipomyia Meigen, 1818
- Genus Schizohelea Kieffer, 1917
- Genus Schizonyxhelea Clastrier, 1984
- Genus Sebessia Remm, 1979 accepted as Dasyhelea Kieffer, 1911
- Genus Selfia Khalaf, 1954 accepted as Culicoides Latreille, 1809
- Genus Sensiculicoides Shevchenko, 1977 accepted as Culicoides Latreille, 1809
- Genus Serromya Rondani, 1856 accepted as Serromyia Meigen, 1818
- Genus Serromyia Meigen, 1818
- Genus Silvaticulicoides Glukhova, 1972 accepted as Silvaticulicoides Glukhova, 1977
- Genus Silvaticulicoides Glukhova, 1977 accepted as Culicoides Latreille, 1809
- Genus Silvicola Mirzaeva & Isaev, 1990 accepted as Culicoides Latreille, 1809
- Genus Sinhalohelea Grogan & Borkent, 1992
- Genus Sinicohelea Yu, Wang & Tan, 2012 accepted as Forcipomyia Meigen, 1818
- Genus Sinocoides Chu, 1983 accepted as Culicoides Latreille, 1809
- Genus Sivabezzia Remm, 1974 accepted as Bezzia Kieffer, 1899
- Genus Sphaerobezzia Zilahi-Sebess, 1940 accepted as Nilobezzia Kieffer, 1921
- Genus Sphaerohelea Spinelli & Felippe-Bauer, 1990
- Genus Sphaeromias Curtis, 1829
- Genus Sphaeromias Stephens, 1829 accepted as Sphaeromias Curtis, 1829
- Genus Sphaeromyia Agassiz, 1846 accepted as Sphaeromias Curtis, 1829
- Genus Spinellihelea Borkent, Grogan & Picado, 2008
- Genus Stenoxenus Coquillett, 1899
- Genus Stigmoculicoides Isaev, 1988 accepted as Culicoides Latreille, 1809
- Genus Stilobezzia Kieffer, 1911
- Genus Stiloculicoides Wirth & Grogan, 1988
- Genus Styloconops Kieffer, 1921 accepted as Leptoconops Skuse, 1889
- Genus Synhelea Kieffer, 1925 accepted as Culicoides Latreille, 1809
- Genus Synthyridomyia Saunders, 1956 accepted as Forcipomyia Meigen, 1818
- Genus Teptraphora accepted as Tetraphora Philippi, 1865
- Genus Teresethes accepted as Tersesthes Townsend, 1893
- Genus Tersesthes Townsend, 1893 accepted as Leptoconops Skuse, 1889
- Genus Tetrabezzia Kieffer, 1917
- Genus Tetrahelea Kieffer, 1925 accepted as Dasyhelea Kieffer, 1911
- Genus Tetraphora Philippi, 1865 accepted as Forcipomyia Meigen, 1818
- Genus Thyridomyia Saunders, 1925 accepted as Forcipomyia Meigen, 1818
- Genus Thysanoganthus accepted as Thysanognathus Ingram & MacFie, 1922
- Genus Thysanognathus Ingram & MacFie, 1922 accepted as Alluaudomyia Kieffer, 1913
- Genus Tokunagahelea Dyce & Meiswinkel, 1995 accepted as Culicoides Latreille, 1809
- Genus Trichohelea Goetghebuer, 1920 accepted as Forcipomyia Meigen, 1818
- Genus Trishelea Kieffer, 1924 accepted as Brachypogon Kieffer, 1899
- Genus Trithecoides Wirth & Hubert, 1959 accepted as Culicoides Latreille, 1809
- Genus Trithicomyia Yu & Song, 2008 accepted as Forcipomyia Meigen, 1818
- Genus Typhonomyia Debenham, 1987 accepted as Forcipomyia Meigen, 1818
- Genus Wannohelea Yu, 2005
- Genus Warmkea Saunders, 1956 accepted as Forcipomyia Meigen, 1818
- Genus Washingtonhelea Wirth & Grogan, 1988
- Genus Wirthohelea Szadziewski, 1988 †
- Genus Wirthomyia Vargas, 1973 accepted as Culicoides Latreille, 1809
- Genus Xenohelea Kieffer, 1917
- Genus Xylocrypta Kieffer, 1899 accepted as Sphaeromias Curtis, 1829
- Genus Yungahelea Spinelli & Ronderos, 2018
- Family Chamaemyiidae Hendel, 1910
- Family Chaoboridae Edwards, 1932
- Family Chimeromyiidae Grimaldi & Cumming, 2009 †
- Family Chironomidae Macquart, 1838
- Family Chironomoidea incertae sedis
- Family Chloropidae Rondani, 1856
- Family Christelenkidae Roháček, 2023 †
- Family Chyromyidae Hendel, 1916
- Family Circumphallidae Papp, 2011
- Family Clusiidae Hendel, 1916
- Family Clusiomitidae Roháček & Hoffeins, 2021 †
- Family Coelopidae Hendel, 1910
- Family Coenomyiidae
- Family Conopidae Latreille, 1802
- Family Cordyluridae
- Family Corethrellidae Edwards, 1932
- Family Cratomyiidae Mazzarolo & Amorim, 2000 † accepted as Zhangsolvidae Nagatomi & Yang, 1998 †
- Family Crosaphididae Kovalev, 1983 †
- Family Cryptochaetidae accepted as Cryptochetidae Brues & Melander, 1932
- Family Cryptochetidae Brues & Melander, 1932
- Family Ctenostylidae Bigot, 1882
- Family Culicidae Meigen, 1818
- Family Curtonotidae Enderlein, 1914
- Family Cuterebridae Brauer, 1887
- Family Cylindrotomidae Schiner, 1863
- Family Cypselosomatidae Hendel, 1931
- Family Deuterophlebiidae Edwards, 1922
- Family Dexiidae Sharp, 1887
- Family Deximorpha Brauer & Bergenstamm, 1889 accepted as Tachinidae Bigot, 1853
- Family Diadocidiidae Winnertz, 1863
- Family Diastatidae Hendel, 1917
- Family Dictyodipteridae Rohdendorf, 1961 †
- Family Diopsidae Billberg, 1820
- Family Diplopolyneuridae Rohdendorf, 1962 † accepted as Pediciidae Osten Sacken, 1860
- Family Diptera (awaiting allocation)
- Family Ditomyiidae Kylin, 1919
- Family Dixamimidae † accepted as Chaoboridae Edwards, 1932
- Family Dixidae Schiffner, 1868
- Family Dolichopodidae Latreille, 1809
- Family Drosophilidae Rondani, 1856
- Family Dryomyzidae Schiner, 1864
- Family Dyspolyneuridae Rohdendorf, 1961 †
- Family Elliidae Krzeminska, Blagoderov & Krezmiñski, 1993 †
- Family Empididae Latreille, 1804
- Family Eoditomyiidae Ansorge, 1996 †
- Family Eolimnobiidae Rohdendorf, 1962 †
- Family Eomyiidae Rohdendorf, 1962 †
- Family Eophlebomyiidae Cockerell, 1925 †
- Family Eopleciidae Rohdendorf, 1946 †
- Family Eopolyneuridae Rohdendorf, 1962 †
- Family Eoptychopteridae Handlirsch, 1906 † accepted as Ptychopteridae Osten Sacken, 1862
- Family Eostratiomyiidae Rohdendorf, 1962 †
- Family Ephydridae Zetterstedt, 1837
- Family Eremochaetidae Ussatchov, 1968 †
- Family Eremoneura (awaiting allocation)
- Family Eucaudomyiidae Grimaldi, 2016 †
- Family Eurychoromyiidae endel, 1910 accepted as Lauxaniidae Macquart, 1835
- Family Evocoidae Yeates, Irwin & Wiegmann, 2006
- Family Fanniidae Schnabl & Dziedzicki, 1911
- Family Fergusoninidae Hennig, 1958
- Family Fungivoritidae Rohdendorf, 1946 †
- Family Galliidae Lukashevich & Mostovski, 2023 †
- Family Gasterophilidae Girschner, 1896
- Family Geomyzidae Fallén, 1823 accepted as Opomyzidae Fallén, 1820
- Family Glossinidae Theobald, 1903
- Family Gobryidae McAlpine, 1997
- Family Gracilitipulidae Hong & Wang, 1990 † accepted as Pediciidae Osten Sacken, 1860
- Family Grauvogeliidae Krzemiński, Krzemińska & Papier, 1994 †
- Family Helcomyzidae Hendel, 1924
- Family Heleomyzidae Westwood, 1840
- Family Helomyzidae accepted as Heleomyzidae Westwood, 1840
- Family Helosciomyzidae Steyskal, 1965
- Family Hennigmatidae Shcherbakov, 1995 †
- Family Hesperinidae Walker, 1848
- Family Heterocheilidae McAlpine, 1991
- Family Heteropezidae Schiner, 1868
- Family Hilarimorphidae Williston, 1896
- Family Hippoboscidae Samouelle, 1819
- Family Hippoboscoidea incertae sedis †
- Family Hoffeinsmyiidae Michelsen, 2009 †
- Family Homalocnemiidae Collin, 1928
- Family Huttoninidae Steyskal, 1965
- Family Hybotidae Meigen, 1820
- Family Hyperoscelididae Hardy & Nagatomi, 1960
- Family Hyperpolyneuridae Rohdendorf, 1961 †
- Family Hypodermatidae Rondani, 1856
- Family Inbiomyiidae Buck, 2006
- Family Ironomyiidae McAlpine & Martin, 1966
- Family Iteaphilidae Wahlberg & Johanson, 2018
- Family Kaluginamyiidae Lukashevich, Pepinelli & Currie, 2020 †
- Family Keroplatidae Rondani, 1856
- Family Kovalevisargidae Mostovski, 1997 †
- Family Lauxaniidae Macquart, 1835
- Family Leptidae Burmeister, 1837 accepted as Rhagionidae Latreille, 1802
- Family Lestremiidae accepted as Cecidomyiidae Newman, 1835
- Family Limnorhyphidae Hong, 1983 † accepted as Perissommatidae Colless, 1962
- Family Limoniidae Speiser, 1909
- Family Lonchaeidae Loew, 1861
- Family Lonchopteridae Macquart, 1835
- Family Luanpingitidae Zhang, 1986 †
- Family Lygistorrhinidae Edwards, 1925
- Family Macroceridae Rondani, 1856
- Family Marginidae McAlpine, 1991
- Family Megamerinidae Hendel, 1913
- Family Mesophantasmatidae Rohdendorf, 1962 †
- Family Mesosciophilidae Rohdendorf, 1946 †
- Family Mesothaumaleidae † accepted as Thaumaleidae Bezzi, 1913
- Family Micropezidae Blanchard, 1840
- Family Microphoridae Collin, 1960 accepted as Dolichopodidae Latreille, 1809
- Family Milichiidae Schiner, 1862
- Family Mormotomyiidae Austen, 1936
- Family Muscidae Latreille, 1802
- Family Musidoromimidae Rohdendorf, 1962 †
- Family Mycetobiidae accepted as Anisopodidae Knab, 1912
- Family Mycetophilidae Newman, 1834
- Family Mydaidae accepted as Mydidae Latreille, 1809
- Family Mydidae Latreille, 1809
- Family Mystacinobiidae Holloway, 1976
- Family Mysteromyiidae Grimaldi, 2016 †
- Family Mythicomyiidae Melander, 1902
- Family Nadipteridae Lukashevich, 1995 †
- Family Nannodastiidae Papp, 1980
- Family Natalimyzidae Barraclough & McAlpine, 2006
- Family Nemestrinidae Griffith & Pidgeon, 1832
- Family Neminidae McAlpine, 1983
- Family Neriidae Westwood, 1840
- Family Neurochaetidae McAlpine, 1978
- Family Nothybidae Frey, 1927
- Family Nycteribiidae Samouelle, 1819
- Family Nymphomyiidae Tokunaga, 1932
- Family Ocoidae accepted as Evocoidae Yeates, Irwin & Wiegmann, 2006
- Family Odiniidae Hendel, 1920
- Family Oestridae Leach, 1815
- Family Oligophryneidae Rohdendorf, 1962 † accepted as Anisopodidae Knab, 1912
- Family Oligophrynidae Rohdendorf, 1962 † accepted as Anisopodidae Knab, 1912
- Family Opetiidae Rondani, 1856
- Family Opomyzidae Fallén, 1820
- Family Oreoleptidae Zloty, Sinclair & Pritchard, 2005
- Family Orientisargidae Zhang, 2012 †
- Family Ortalidae Fallén, 1810 accepted as Ulidiidae Macquart, 1835
- Family Otitidae Aldrich, 1932 accepted as Ulidiidae Macquart, 1835
- Family Pachyneuridae Schiner, 1864
- Family Palaeolimnobiidae Zhang, Zhang, Liu & Shangguan, 1986 † accepted as Pediciidae Osten Sacken, 1860
- Family Palaeophoridae Rohdendorf, 1951 †
- Family Palaeopleciidae Rohdendorf, 1962 †
- Family Palaeostratiomyiidae Rohdendorf, 1938 † accepted as Rhagionidae Latreille, 1802
- Family Pallopteridae Loew, 1862
- Family Panthophthalmidae accepted as Pantophthalmidae Bigot, 1882
- Family Pantophthalmidae Bigot, 1882
- Family Parapleciidae Hong, 1983 † accepted as Paraxymyiidae Rohdendorf, 1946 †
- Family Paratendipedidae Hong & Wang, 1990 † accepted as Serendipidae Evenhuis, 1994 †
- Family Paraxymyiidae Rohdendorf, 1946 †
- Family Pediciidae Osten Sacken, 1860
- Family Pelecorhynchidae Enderlein, 1922
- Family Periscelidae accepted as Periscelididae Oldenberg, 1914
- Family Periscelididae Oldenberg, 1914
- Family Perissomatidae Colless, 1962 accepted as Perissommatidae Colless, 1962
- Family Perissommatidae Colless, 1962
- Family Phaeomyiidae Verbeke, 1950
- Family Phasiidae Robineau-Desvoidy, 1830 accepted as Tabanidae Latreille, 1802
- Family Phlebotomidae accepted as Psychodidae Newman, 1834
- Family Phoridae Curtis, 1833
- Family Phragmoligoneuridae Rohdendorf, 1962 † accepted as Protopleciidae Rohdendorf, 1946 †
- Family Piophilidae Macquart, 1835
- Family Pipunculidae Walker, 1834
- Family Platypezidae Fallén, 1815
- Family Platystomatidae Schiner, 1862
- Family Pleciidae Duda, 1930 accepted as Bibionidae Fleming, 1821
- Family Pleciodictyidae Rohdendorf, 1962 † accepted as Protopleciidae Rohdendorf, 1946 †
- Family Pleciofungivoridae Rohdendorf, 1946 †
- Family Pleciomimidae Rohdendorf, 1946 † accepted as Antefungivoridae Rohdendorf, 1938 †
- Family Polleniidae Brauer & Bergenstamm, 1889
- Family Procramptonomyiidae Kovalev, 1985 †
- Family Proneottiophilidae Hennig, 1969 †
- Family Protapioceridae Ren, 1998 †
- Family Protempididae Ussatchov, 1968 †
- Family Protendipedidae Rohdendorf, 1962 †
- Family Protobibionidae Rohdendorf, 1946 †
- Family Protobrachyceridae Rohdendorf, 1962 †
- Family Protobrachycerontidae † accepted as Protobrachyceridae Rohdendorf, 1962 †
- Family Protoligoneuridae Rohdendorf, 1962 † accepted as Protopleciidae Rohdendorf, 1946 †
- Family Protomphralidae Rohdendorf, 1962 †
- Family Protopleciidae Rohdendorf, 1946 †
- Family Protorhyphidae Handlirsch, 1906 †
- Family Protoscatopsidae Rohdendorf, 1946 †
- Family Pseudopomyzidae McAlpine, 1966
- Family Psilidae Macquart, 1835
- Family Psychodidae Newman, 1834
- Family Psychodoidea incertae sedis
- Family Ptychopteridae Osten Sacken, 1862
- Family Pyrgotidae Schiner, 1868
- Family Rangomaramidae Jaschhof & Didham, 2002
- Family Rhaetomyiidae Rohdendorf, 1962 †
- Family Rhagionemestriidae Ussatchov, 1968 †
- Family Rhagionempididae Rohdendorf, 1951 †
- Family Rhagionidae Latreille, 1802
- Family Rhiniidae Brauer & Bergenstamm, 1889
- Family Rhinophoridae Robineau-Desvoidy, 1863
- Family Rhinotoridae Williston, 1896 accepted as Heleomyzidae Westwood, 1840
- Family Rhopalomeridae accepted as Ropalomeridae Schiner, 1868
- Family Rhyphidae Newman, 1834 accepted as Anisopodidae Knab, 1912
- Family Richardidae accepted as Richardiidae Loew, 1868
- Family Richardiidae Loew, 1868
- Family Ropalomeridae Schiner, 1868
- Family Sapromyzidae accepted as Lauxaniidae Macquart, 1835
- Family Sarcophagidae Macquart, 1834
- Family Scathophagidae Cresson, 1918
- Family Scatophagidae Robineau-Desvoidy, 1830 accepted as Scathophagidae Cresson, 1918
- Family Scatopsidae Newman, 1834
- Family Scenopinidae Fallén, 1817
- Family Sciadoceridae Schmitz, 1929
- Family Sciaridae Billberg, 1820
- Family Sciaroidea incertae sedis
- Family Sciomyzidae Fallén, 1820
- Family Sepsidae Walker, 1833
- Family Serendipidae Evenhuis, 1994 †
- Family Siberhyphidae †
- Family Simuliidae Newman, 1834
- Family Sinotendipedidae † accepted as Anisopodidae Knab, 1912
- Family Somatiidae Hendel, 1935
- Family Spaniidae Rondani, 1856 accepted as Rhagionidae Latreille, 1802
- Family Sphaeoroceridae accepted as Sphaeroceridae Macquart, 1835
- Family Sphaeroceridae Macquart, 1835
- Family Stenomicridae Papp, 1984 accepted as Periscelididae Oldenberg, 1914
- Family Stratiomyidae Latreille, 1802
- Family Streblidae Kolenati, 1863
- Family Stronglyophthalmyiidae accepted as Strongylophthalmyiidae Hendel, 1917
- Family Strongylophthalmyiidae Hendel, 1917
- Family Synneuridae Enderlein, 1936 accepted as Canthyloscelidae Shannon, 1927
- Family Syringogastridae Prado, 1969
- Family Syrphidae Latreille, 1802
- Family Tabanidae Latreille, 1802
- Family Tachinidae Bigot, 1853
- Family Tachiniscidae Kertész, 1903
- Family Tanyderidae Osten Sacken, 1880
- Family Tanyderophryneidae Rohdendorf, 1962 † accepted as Chaoboridae Edwards, 1932
- Family Tanypezidae Rondani, 1856
- Family Tephritidae Newman, 1834
- Family Teratomyzidae Colless & McAlpine, 1970
- Family Tethepomyiidae Grimaldi & Arillo, 2008 †
- Family Tethinidae accepted as Canacidae Jones, 1906
- Family Thaumaleidae Bezzi, 1913
- Family Therevidae Newman, 1834
- Family Tillyardipteridae Lukashevich & Shcherbakov, 1999 †
- Family Tipulidae Leach, 1815
- Family Tipulodictyidae Rohdendorf, 1962 †
- Family Tipulopleciidae Rohdendorf, 1962 †
- Family Trichoceridae Rondani, 1841
- Family Trixoscelidae Hendel, 1916 accepted as Heleomyzidae Westwood, 1840
- Family Trypetidae Loew, 1861 accepted as Tephritidae Newman, 1834
- Family Ulidiidae Macquart, 1835
- Family Ulurumyiidae Michelsen & Pape, 2017
- Family Uranorhagionidae Zhang, Yang & Ren, 2010 †
- Family Valeseguyidae Amorim & Grimaldi, 2006
- Family Vermileonidae Williston, 1886
- Family Vladipteridae Shcherbakov, 1995 †
- Family Vosilidae Vršanský & Ren in Vršanský, Ren & Shih, 2010 †
- Family Xenasteiidae Hardy, 1980
- Family Xylomidae accepted as Xylomyidae Verrall, 1901
- Family Xylomyidae Verrall, 1901
- Family Xylophagidae Fallén, 1810
- Family Yantaromyiidae Barták, 2020 †
- Family Zhangobiidae Evenhuis, 1994 † accepted as Pediciidae Osten Sacken, 1860
- Family Zhangsolvidae Nagatomi & Yang, 1998 †
- Genus Apystomimus Mostovski, 1999 †
- Genus Aschizomyia Grimaldi, 2018 †
- Order Embiodea
- Order Endopterygota incertae sedis
- Order Eoblattida †
- Order Ephemeroptera
- Order Eugeroptera †
- Order Geraroptera †
- Order Geroptera †
- Order Glosselytrodea †
- Order Grylloblattodea
- Order Hemiptera
- 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 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 †
- Phylum Brachiopoda
- Phylum Bryozoa
- Phylum Cephalorhyncha incertae sedis
- Phylum Chaetognatha
- Phylum Chitinozoa †
- Phylum Chordata
- Phylum Cnidaria
- Phylum Ctenophora
- Phylum Cycliophora
- Phylum Cycloneuralia incertae sedis
- Phylum Echinodermata
- Phylum Entoprocta
- Phylum Gastrotricha
- Phylum Gnathostomulida
- Phylum Hemichordata
- Phylum Hyolitha †
- Phylum Kinorhyncha
- Phylum Lobopoda †
- Phylum Loricifera
- Phylum Micrognathozoa
- Phylum Mollusca
- Phylum Monoblastozoa accepted as Animalia incertae sedis
- Phylum Nematoda
- Phylum Nematomorpha
- Phylum Nemertea
- Phylum Onychophora
- Phylum Orthonectida
- Phylum Phoronida
- Phylum Placozoa
- Phylum Platyhelminthes
- Phylum Pogonophora accepted as Siboglinidae Caullery, 1914
- Phylum Porifera
- Phylum Priapula accepted as Priapulida
- Phylum Priapulida
- Phylum Problematica † accepted as Animalia incertae sedis
- Phylum Rhombozoa
- Phylum Rotifera
- Phylum Scalidophora incertae sedis
- Phylum Sipuncula
- Phylum Tardigrada
- Phylum Trace fossils †
- Phylum Vendobionta †
- Phylum Vestimentifera accepted as Siboglinidae Caullery, 1914
- Phylum Vetulicolia †
- Phylum Vinctiplicata incertae sedis †
- Phylum Xenacoelomorpha
- Genus Trilobocaris Pribyl, 1953 †
- Kingdom Archaea
- Kingdom Bacteria
- Kingdom Chromista
- Kingdom Fungi
- Kingdom Plantae
- Kingdom Protista accepted as Protozoa
- Kingdom Protozoa
- Kingdom Viruses
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