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
- 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
- Genus Abocciputa Plant, 1989
- Genus Acallomyia Melander, 1927
- Genus Acanthoclinocera Saigusa, 1965
- Genus Acanthopeza Becker, 1914
- Genus Acarterus Loew, 1858
- Genus Acarteus
- Genus Achelipoda Yang, Zhang & Zhang, 2007
- Genus Aclinocera Yang & Yang, 1995
- Genus Aclonempis Collin, 1926
- Genus Adipsomyia Yang, Zhang & Zhang, 2007
- Genus Afroclinocera Sinclair, 1999
- Genus Afrodromia Smith, 1969
- Genus Afroempis Smith, 1969
- Genus Afrohybos Smith, 1969
- Genus Allochrotus Collin, 1933
- Genus Amictoides Bezzi, 1910
- Genus Amydroneura Collin, 1926
- Genus Anaclastoctedon Plant, 2010
- Genus Anacrostichus Bezzi, 1909
- Genus Anomalempis Melander, 1927
- Genus Anthepiscopus Becker, 1891
- Genus Antipodromia Plant, 2011
- Genus Aplomera Macquart, 1839
- Genus Apterodromia Oldroyd, 1949
- Genus Archaeodrapetiops Martins-Neto, de Moraes Vieira, Kucera-Santos & de Campos Fragoso, 1992
- Genus Archiplatypalpus Kovalev, 1974
- Genus Ardoptera Macquart, 1827
- Genus Argyrandrus Bezzi, 1909
- Genus Ariasella Gil, 1923
- Genus Asymphyloptera Collin, 1933
- Genus Atalanta Meigen, 1800
- Genus Atodrapetis Plant, 1997
- Genus Atrichopleura Bezzi, 1910
- Genus Austrodrapetis Smith, 1964
- Genus Austrodromia Collin, 1933
- Genus Austropeza Plant, 1989
- Genus Axelempis Curran, 1931
- Genus Bandella Bickel, 2002
- Genus Bergenstammia Mik, 1881
- Genus Bolrhamphomyia Rafael, 2010
- Genus Boreodromia Coquillett, 1903
- Genus Brachistoma Rondani, 1856 accepted as Brachystoma Meigen, 1822
- Genus Brachystoma Meigen, 1822
- Genus Brochella Melander, 1927
- Genus Calo Gistl, 1848 accepted as Cyrtoma Meigen, 1824
- Genus Calohilara Frey, 1952
- Genus Camelopsis Engel, 1918
- Genus Ceratempis Melander, 1927
- Genus Cerathybos Bezzi, 1909
- Genus Chaetodromia Chillcott in Chillcott & Teskey, 1983
- Genus Chamadipsia Mik, 1881 accepted as Chamaedipsia Mik, 1881
- Genus Chamädipsia Mik, 1881 accepted as Chamaedipsia Mik, 1881
- Genus Chamaedipsia Mik, 1881
- Genus Chelifera Macquart, 1823
- Genus Chelipoda Macquart, 1823
- Genus Chelipodozus Collin, 1933
- Genus Chilerhamphomyia Rafael, 2010
- Genus Chillcottomyia Saigusa, 1986
- Genus Chiromantis Rondani, 1856 accepted as Chyromantis Rondani, 1856
- Genus Choreodromia Frey, 1922
- Genus Chvalaea Papp & Foldvari, 2001
- Genus Chyromantis Rondani, 1856 accepted as Chelipoda Macquart, 1823
- Genus Cladodromia Bezzi, 1905
- Genus Clinocera Meigen, 1803
- Genus Clinocerella Engel, 1918
- Genus Clinorhampha Collin, 1933
- Genus Colabris Melander, 1927
- Genus Collinaria Frey, 1950
- Genus Coptophlebia Bezzi, 1909
- Genus Coryneta Meigen, 1800
- Genus Cretoplatypalpus Kovalev, 1978
- Genus Ctenodrapetis Bezzi, 1904
- Genus Cunomyia Bickel, 1998
- Genus Cyrtoma Meigen, 1824
- Genus Danistes Gistl, 1848 accepted as Tachydromia Meigen, 1803
- Genus Dasyrhamphomyia Frey, 1922
- Genus Deuteragonista Philippi, 1865
- Genus Dionaea Meigen, 1800 accepted as Rhamphomyia Meigen, 1822
- Genus Dionnaea Hendel, 1908
- Genus Dipsomyia Bezzi, 1909
- Genus Disneyempis Smith, 1976
- Genus Dolichocephala Macquart, 1823
- Genus Doliodromia Collin, 1928
- Genus Drapetiella Meunier, 1908
- Genus Driodromya Rondani, 1856 accepted as Dryodromia Rondani, 1856
- Genus Driodromyia Bezzi in Becker-Kertész, 1903 accepted as Dryodromia Rondani, 1856
- Genus Drymodromia Becker, 1914
- Genus Dryodromia Rondani, 1856
- Genus Dryodromya Rondani, 1856 accepted as Dryodromia Rondani, 1856
- Genus Dryodromyia Bigot, 1857 accepted as Dryodromia Rondani, 1856
- Genus Dusmetina Collado, 1930
- Genus Dysaletria Loew, 1860
- Genus Ecommocydromia Schlüter, 1978
- Genus Edenophorus Smith, 1969
- Genus Electrocyrtoma Cockerell, 1917 †
- Genus Emerodromya Rondani, 1856 accepted as Hemerodromia Meigen, 1822
- Genus Empidadelpha Collin, 1928
- Genus Empimorpha Coquillett, 1895
- Genus Empis Linnaeus, 1758
- Genus Emplita Grimaldi & Cumming, 1999 †
- Genus Enicopteryx Stephens, 1829
- Genus Enoplempis Bigot, 1880 accepted as Empis Linnaeus, 1758
- Genus Ephydrempis Saigusa, 1986
- Genus Epiceia Walker, 1860
- Genus Epiceria Schiner, 1868 accepted as Epiceia Walker, 1860
- Genus Eternia Martins-Neto, de Moraes Vieira, Kucera-Santos & de Campos Fragoso, 1992
- Genus Eucelidia Mik, 1881
- Genus Euempis Frey, 1953
- Genus Eugowra Bickel, 2006
- Genus Euhybos Melander, 1902
- Genus Euthyneura Macquart, 1836
- Genus Euthyneuriella Meunier, 1908
- Genus Euthynevra Agassiz, 1846 accepted as Euthyneura Macquart, 1836
- Genus Fraudator Hutton, 1901
- Genus Fur Jones, 1940
- Genus Gloma Meigen, 1822
- Genus Glyphidopeza Sinclair, 1997
- Genus Gynatoma Collin, 1928
- Genus Haplomera Agassiz, 1846 accepted as Aplomera Macquart, 1839
- Genus Heleodromia Haliday, 1833
- Genus Heleodromyia Bigot, 1889 accepted as Heleodromia Haliday, 1833
- Genus Heliodromia Walker, 1840 accepted as Heleodromia Haliday, 1833
- Genus Hemerodromia Meigen, 1822
- Genus Hemerodromya Rondani, 1856 accepted as Hemerodromia Meigen, 1822
- Genus Hemerodromyia Berthold in Latreille, 1827 accepted as Hemerodromia Meigen, 1822
- Genus Henicopteryx Agassiz, 1846 accepted as Enicopteryx Stephens, 1829
- Genus Hesperempis Melander, 1906
- Genus Heterodromyia Bigot, 1857 accepted as Hemerodromia Meigen, 1822
- Genus Hilara Meigen, 1822
- Genus Hilarempis Bezzi, 1905
- Genus Hilarigona Collin, 1933
- Genus Hilaropus White, 1917
- Genus Holoclera Schiner, 1860
- Genus Homalocnemimus Mostovski, 1999
- Genus Hoplopeza Bezzi, 1909
- Genus Hormopeza Zetterstedt, 1838
- Genus Hormopeza Zetterstedt, 1837 accepted as Hormopeza Zetterstedt, 1838
- Genus Hybomyia Plant, 1995
- Genus Hydrodromia Macquart, 1835
- Genus Hydropeza Sinclair, 1999
- Genus Hylara Rondani, 1856 accepted as Hilara Meigen, 1822
- Genus Hypenella Collin, 1941
- Genus Hystrichonotus Collin, 1933
- Genus Icasma Collin, 1928
- Genus Illiesiella Wagner, 1985
- Genus Isodrapetis Collin, 1928
- Genus Iteophila Zetterstedt, 1837
- Genus Kowarzia Mik, 1882
- Genus Kritempis Collin, 1926
- Genus Lactistomyia Melander, 1902
- Genus Lamachella Melander, 1927
- Genus Lamposoma Becker, 1889
- Genus Lamprempis Wheeler & Melander, 1901
- Genus Lepidomya Bigot, 1857 accepted as Chelipoda Macquart, 1823
- Genus Lepidomyia Bezzi, 1903 accepted as Lepidomya Bigot, 1857
- Genus Lepidromia Schiner, 1868
- Genus Leptempis Collin, 1926
- Genus Leptocyrtoma Saigusa, 1986
- Genus Leptometopiella Melander, 1927
- Genus Leptosceles Haliday, 1833
- Genus Leptoscelis Agassiz, 1846 accepted as Leptosceles Haliday, 1833
- Genus Lissempis Bezzi, 1909
- Genus Litanomyia Melander, 1902
- Genus Lochmocola Hong, 1981
- Genus Lundstroemiella Frey, 1922
- Genus Macrostomus Wiedemann, 1817
- Genus Mantipeza Rondani, 1856 accepted as Chelifera Macquart, 1823
- Genus Megacittarus Bigot, 1889 accepted as Megacyttarus Bigot, 1880
- Genus Megacyttarus Bigot, 1880
- Genus Metachela Coquillett, 1903
- Genus Microcera Zetterstedt, 1838
- Genus Microcera Zetterstedt, 1837
- Genus Microdromia Bezzi in Becker-Kertész, 1903 accepted as Microdromya Bigot, 1857
- Genus Microdromya Bigot, 1857 accepted as Hemerodromia Meigen, 1822
- Genus Monodromia Collin, 1928
- Genus Munburra Bickel, 2006
- Genus Nanodromia Grootaert, 1994
- Genus Nemedina Chandler, 1981
- Genus Nemedromia Grimaldi & Cumming, 1999 †
- Genus Neoalavesia Poinar & Vega, 2020 †
- Genus Neocota Coquillett, 1895
- Genus Neoilliesiella Wagner & Özdikmen, 2006 accepted as Heleodromia Haliday, 1833
- Genus Neoplasta Coquillett, 1895
- Genus Neoturonius Grimaldi & Cumming, 1999 †
- Genus Neoza
- Genus Niphogenia Melander, 1927
- Genus Noeza Meigen, 1800
- Genus Obstinocephala Jones, 1940
- Genus Ochtherohilara Frey, 1952
- Genus Opeatocerata Melander, 1927
- Genus Oreogeton Schiner, 1860
- Genus Oreothalia Melander, 1902
- Genus Oropezella Collin, 1926
- Genus Pachimeria Rondani, 1856 accepted as Pachymeria Stephens, 1829
- Genus Pachymeria Stephens, 1829
- Genus Palaeoleptopeza Meunier, 1908 †
- Genus Palaeoparamesia Meunier, 1902 †
- Genus Parahybos Kertész, 1899
- Genus Paramesia Macquart, 1835
- Genus Pararhamphomyia Frey, 1922
- Genus Parathalassiella Meunier, 1908
- Genus Pasitrichotus Collin, 1933
- Genus Perospilus Bigot, 1859 accepted as Pterospilus Rondani, 1856
- Genus Phaeobalia Mik, 1881
- Genus Phaetempis Grimaldi & Cumming, 1999 †
- Genus Phaobalia Mik, 1881 accepted as Phaeobalia Mik, 1881
- Genus Phäobalia Mik, 1881 accepted as Phaeobalia Mik, 1881
- Genus Philetus Melander, 1927
- Genus Philolura
- Genus Philolutra Mik, 1882
- Genus Phleboctena Bezzi, 1909
- Genus Phoneustica Aldrich, 1905 accepted as Phoneutisca Loew, 1863
- Genus Phoneutisca Loew, 1863
- Genus Phyllodromia Zetterstedt, 1837
- Genus Phyllodromya Rondani, 1856 accepted as Phyllodromia Zetterstedt, 1837
- Genus Pieltainia
- Genus Planempis Frey, 1953
- Genus Platycnema Zetterstedt, 1838
- Genus Platyptera Meigen, 1803
- Genus Polyblepharis Bezzi, 1909
- Genus Polydromia Verrall in Scudder, 1882 accepted as Polydromya Bigot, 1857
- Genus Polydromya Bigot, 1857 accepted as Chelifera Macquart, 1823
- Genus Pontodromia Grootaert, 1994
- Genus Porphyrochroa Melander, 1927
- Genus Proagomyia Collin, 1933
- Genus Proclinopyga Melander, 1927
- Genus Progloma James, 1937 †
- Genus Prolatomyia Grimaldi & Cumming, 1999 †
- Genus Protoedalea Cockerell, 1920 †
- Genus Protoreogeton Mostovski, 1999
- Genus Pseudheleodromia Wagner, 2001
- Genus Pseudoacarterus Waters, 1989
- Genus Pseudoragas Frey, 1952
- Genus Pseudoscelolabes Collin, 1933
- Genus Pseudostilpon Séguy, 1950
- Genus Pseudowiedemannia Engel, 1918
- Genus Pterempis Bezzi, 1909
- Genus Pterospilus Rondani, 1856 accepted as Syneches Walker, 1852
- Genus Pterospylus Bigot, 1857 accepted as Pterospilus Rondani, 1856
- Genus Ptilophyllodromia Bezzi, 1904
- Genus Ragas Walker, 1837
- Genus Ramphomya Rondani, 1856 accepted as Rhamphomyia Meigen, 1822
- Genus Ramphomyia Meigen, 1822 accepted as Rhamphomyia Meigen, 1822
- Genus Rhadinempis Collin, 1926
- Genus Rhagas Walker, 1837 accepted as Ragas Walker, 1837
- Genus Rhamphella Malloch, 1930
- Genus Rhamphomya Bigot, 1857 accepted as Rhamphomyia Meigen, 1822
- Genus Rhamphomyia Meigen, 1822
- Genus Rhamphomyza Zetterstedt, 1837 accepted as Rhamphomyia Meigen, 1822
- Genus Rhyacodromia Saigusa, 1986
- Genus Roderia Mik, 1881 accepted as Roederia Mik, 1881
- Genus Röderia Mik, 1881 accepted as Roederia Mik, 1881
- Genus Roederella Engel, 1918
- Genus Roederia Mik, 1881
- Genus Roederiodes Coquillett, 1901
- Genus Roederioides Curran, 1934 accepted as Roederiodes Coquillett, 1901
- Genus Rubistella Jones, 1940
- Genus Sabinios Jones, 1940
- Genus Sabroskyella Wilder, 1982
- Genus Scelolabes Philippi, 1865
- Genus Sciodromia Westwood, 1840
- Genus Sciodromyia Bigot, 1889 accepted as Sciodromia Westwood, 1840
- Genus Seguyella Vaillant, 1960
- Genus Sematopoda Collin, 1928
- Genus Sicodus Rafinesque, 1815
- Genus Sicus Latreille, 1796
- Genus Sinodrapetis Yang, Gaimari & Grootaert, 2004
- Genus Sinohilara Zhou, Li & Yang, 2010
- Genus Sinotrichopeza Yang, Zhang & Zhang, 2007
- Genus Smithybos Ale-Rocha, 2000
- Genus Sororsenexa Plant, 2011
- Genus Sphenempis Saigusa, 2022 accepted as Empis Linnaeus, 1758
- Genus Sphicosa Philippi, 1865
- Genus Steleochaeta Kertész, 1909
- Genus Steleocheta Becker, 1887
- Genus Stelochaeta
- Genus Stenoproctus Loew, 1858
- Genus Stuckenbergia Smith, 1969
- Genus Stuckenbergomyia Smith, 1971 accepted as Stuckenbergia Smith, 1969
- Genus Stylocydromia Saigusa, 1986
- Genus Styrex Scopoli, 1763
- Genus Synamphotera Loew, 1858
- Genus Synechus
- Genus Tachydroma Waltl, 1837 accepted as Tachydromia Meigen, 1803
- Genus Tachydromya Oken, 1815 accepted as Tachydromia Meigen, 1803
- Genus Tachydromyia Bigot, 1889 accepted as Tachydromia Meigen, 1803
- Genus Tachydromyia Macquart, 1823 accepted as Tachydromia Meigen, 1803
- Genus Thalassempis Saigusa, 1994
- Genus Thamnodromia Mik, 1886
- Genus Thamnodromyia Bigot, 1889 accepted as Phyllodromia Zetterstedt, 1837
- Genus Thanategia Melander, 1927
- Genus Thinempis Bickel, 1996
- Genus Toreus Melander, 1906
- Genus Tremembella Martins-Neto, de Moraes Vieira, Kucera-Santos & de Campos Fragoso, 1992
- Genus Trichinites Hennig, 1970 †
- Genus Trichoclinocera Collin, 1941
- Genus Trichohilara Collin, 1933
- Genus Tricopexa Neave, 1950 accepted as Tricopeza Rondani, 1856
- Genus Turonempis Grimaldi & Cumming, 1999 †
- Genus Vockerothempis Saigusa, 2012 accepted as Rhamphomyia Meigen, 1822
- Genus Wiedemannia Zetterstedt, 1833
- Genus Wiedmannia Bigot, 1856 accepted as Wiedemannia Zetterstedt, 1833
- Genus Xanthempis Bezzi, 1909
- Genus Xanthodromia Saigusa, 1986
- Genus Xiphidicera Macquart, 1834
- Genus Xiphidiocera Blanchard, 1845 accepted as Xiphidicera Macquart, 1834
- Genus Xyphidicera Bigot, 1857 accepted as Xiphidicera Macquart, 1834
- Genus Zanclotus Wilder, 1982
- Genus Zealandicesa Koçak & Kemal, 2010
- 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 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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