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
- Genus Acanthopeltastes Enderlein, 1911
- Genus Afrocelyphus Vanschuytbroeck, 1959
- Genus Agrophaspidium Wheeler & Mlynarek, 2008
- Genus Alajichlorops Nartshuk, 2011
- Genus Allomedeia Mlynarek & Wheeler, 2010
- Genus Alombus Becker, 1914
- Genus Amnonella Cherian, 1992
- Genus Anacamptoneurum Becker, 1903
- Genus Anadrema Nartshuk, 2002
- Genus Anatrichus Loew, 1860
- Genus Anomoeoceros Lamb, 1918
- Species Anomoeoceros acuminatocornis Sabrosky, 1951
- Species Anomoeoceros flavipalpis Sabrosky, 1951
- Species Anomoeoceros flavofacies Becker, 1900
- Species Anomoeoceros hispidus Lamb, 1918
- Species Anomoeoceros silvestrii Seguy, 1932
- Genus Anoscinella Becker, 1916
- Genus Anthracophaga Loew, 1866
- Genus Anthracophagella Anderson, 1977
- Genus Apallates Sabrosky, 1980
- Genus Aphanotrigonella Narchuk, 1964
- Genus Aphanotrigonum Duda in Lindner, 1932
- Genus Apotropina Hendel, 1907
- Genus Aprometopis Becker, 1910
- Genus Apteroscinis Malloch, 1931
- Genus Apterosoma Salmon, 1939
- Genus Aragara Walker, 1860
- Genus Archecetema Narchuk, 1976 †
- Genus Archimeromyza Deeming, 1981
- Genus Arcuator Sabrosky, 1985
- Genus Aschabadicola Frey, 1921
- Genus Asianochlorops Kanmiya, 1983
- Genus Aspistyla Duda in Lindner, 1933
- Genus Assuania Becker, 1903
- Genus Aulacogaurax De Meyere, 1913
- Genus Baseoneura Duda, 1930
- Genus Bathyparia Lamb, 1917
- Genus Batrachomyia Krefft, 1863
- Genus Beckerella Enderlein, 1911
- Genus Benjaminella Malloch, 1925
- Genus Bharathella Cherian, 1990
- Genus Binatang Riccardi & Amorim, 2020
- Genus Biorbitella Sabrosky, 1980
- Genus Botanobia Lioy, 1864
- Genus Cadrema Walker, 1859
- Genus Calamoncosis Enderlein, 1911
- Genus Camarota Meigen, 1830
- Genus Camptopeltes Mlynarek & Wheeler, 2010
- Genus Camptoscinella Sabrosky, 1951
- Genus Capnoptera Loew, 1866
- Genus Cauloscinis Yang & Yang, 1991
- Genus Caviceps Malloch, 1924
- Genus Celyphomima Enderlein, 1920
- Genus Centor Loew, 1866 accepted as Cetema Hendel, 1907
- Genus Centorella Strand, 1928 accepted as Cetema Hendel, 1907
- Genus Centorisoma Becker, 1910
- Genus Cerais Van der Wulp, 1881
- Genus Ceratobarys Coquillett, 1898
- Genus Cestoplectus Lamb, 1918
- Genus Cetema Hendel, 1907
- Genus Chactochlorops Malloch, 1914
- Genus Chaetaspis Nishijima, 1954 accepted as Togeciphus Nishijima, 1955
- Genus Chaethippus Duda, 1930
- Genus Chaetochlorops Malloch, 1914 accepted as Chactochlorops Malloch, 1914
- Genus Chalcidomyia Meijere, 1910
- Genus Chloromerus Becker, 1911
- Genus Chloropella Malloch, 1925
- Genus Chloropisca Loew, 1866 accepted as Thaumatomyia Zenker, 1833
- Genus Chlorops Meigen, 1830
- Genus Chloropsina Becker, 1911
- Genus Choetochlorops Neave, 1939 accepted as Chaetochlorops Malloch, 1914
- Genus Chromatopterum Becker, 1910
- Genus Collessimyia Spencer, 1986
- Genus Coniochlorops Duda, 1934 †
- Genus Conioscinella Duda, 1930
- Genus Conochlorops Sabrosky, 1941 †
- Genus Coomanimyia Séguy, 1938
- Genus Cordylosoma Becker, 1924
- Genus Cordylosomides Strand, 1928 †
- Genus Coryphisoptron Enderlein, 1911
- Genus Crassiseta von Roser, 1840
- Genus Crassivenula Sabrosky, 1941
- Genus Cryptonevra Lioy, 1864
- Genus Cyclocerculla Beschovski, 1978
- Genus Cyrtomomyia Becker, 1913
- Genus Dactylothyrea de Meijere, 1910
- Genus Dasyopa Malloch, 1918
- Genus Deltastoma Malloch, 1924
- Genus Desertochlorops Narchuk, 1966
- Genus Dicracus
- Genus Dicraeus Loew, 1873
- Genus Diplotoxa Loew, 1863
- Genus Diplotoxoides Andersson, 1977
- Genus Disciphus Becker, 1911
- Genus Discogastrella Enderlein, 1911
- Genus Dudeurina Ismay, 1995
- Genus Dysartia Sabrosky, 1991
- Genus Echinia Paramonov, 1961
- Genus Ectece Scudder, 1882 accepted as Ectecephala Macquart, 1851
- Genus Ectecephala Macquart, 1851
- Genus Ectropa Schiner, 1868 accepted as Apotropina Hendel, 1907
- Genus Elachiptera Macquart, 1835
- Genus Elachiptereicus Becker, 1909
- Genus Elachyptera Agassiz, 1846 accepted as Elachiptera Macquart, 1835
- Genus Elliponeura Loew, 1869
- Genus Emmalochaeta Becker, 1916
- Genus Enderleiniella Becker, 1912
- Genus Ensiferella Andersson, 1977
- Genus Ephydroscinis Malloch, 1924
- Genus Epicelphyus
- Genus Epicelyphus Becker, 1911
- Genus Epichlorops Becker, 1910
- Genus Epimadiza Becker, 1910
- Genus Eribolus Becker, 1910
- Genus Euchlorops Malloch, 1913
- Genus Eudicraeus Nartshuk, 1967
- Genus Eugaurax Malloch, 1913
- Genus Euhippelates Malloch, 1925
- Genus Eurhina Westwood, 1840
- Genus Eurina Meigen, 1830
- Genus Euryparia Becker, 1911
- Genus Euthropa Loew, 1866
- Genus Euthyridium Frey, 1923
- Genus Eutricimba Malloch, 1931
- Genus Eutropha Loew, 1866
- Genus Fiebrigella Duda, 1921
- Genus Formosina Becker, 1911
- Genus Gallomyia Narchuk, 1965
- Genus Gampsocera Schiner, 1862
- Genus Gauracisoma Duda, 1930
- Genus Gaurax Loew, 1863
- Genus Globiops Andersson, 1977
- Genus Goniaspis Duda, 1930
- Genus Goniopsis Duda, 1929
- Genus Goniopsita Duda, 1930
- Genus Hapleginella Duda in Lindner, 1933
- Genus Haplegis Loew, 1866
- Genus Hemisphaerisoma Becker, 1911
- Genus Heteroscinis Lamb, 1918
- Genus Heteroscinoides Cherian, 1989
- Genus Hippelates Loew, 1863
- Genus Hippelatinus Enderlein, 1911
- Genus Homalura Meigen, 1826
- Genus Homaluroides Sabrosky, 1980
- Genus Homops Speiser, 1923
- Genus Hopkinsella Malloch, 1930
- Genus Incertella Sabrosky, 1980 accepted as Microcercis Beschovski, 1978
- Genus Indometopis Cherian, 1989
- Genus Indonella Cherian, 2008
- Genus Indophthalmus Cherian, 2002
- Genus Javanoscinis Andersson, 1977
- Genus Kurumemyia Kanmiya, 1983
- Genus Kwarea Sabrosky, 1954
- Genus Lagaroceras Becker, 1903
- Genus Lasiambia Enderlein, 1936 accepted as Lasiambia Anonymous, 1937
- Genus Lasiambia Sabrosky, 1941 accepted as Lasiambia Anonymous, 1937
- Genus Lasiambia Anonymous, 1937
- Genus Lasiochlorops Duda, 1934
- Genus Lasiopleura Becker, 1910
- Genus Lasiosina Becker, 1910
- Genus Leptopeltastes Enderlein, 1911
- Genus Leptotrigonum Becker, 1912
- Genus Leucochaeta Becker, 1913
- Genus Lieparella Spencer, 1986
- Genus Liohippelates Duda, 1929
- Genus Liomicroneurum Enderlein, 1911
- Genus Lioscinella Duda, 1929
- Genus Lipara Meigen, 1830
- Genus Liriomicroneurum Duda in Lindner, 1933 accepted as Liomicroneurum Enderlein, 1911
- Genus Lonchonotus Lamb, 1918
- Genus Loxobathmis Enderlein, 1911
- Genus Loxotaenia Becker, 1911
- Genus Luzonia Frey, 1923
- Genus Macrochaetum Corti, 1909 accepted as Macrochaetum Bezzi, 1894
- Genus Macrochaetum Bezzi, 1894 accepted as Macrochetum Rondani, 1856
- Genus Macrochetum Rondani, 1856 accepted as Elachiptera Macquart, 1835
- Genus Macrochoetum Bezzi, 1892 accepted as Macrochetum Rondani, 1856
- Genus Macrostyla Winnertz, 1846
- Genus Macrostyla Lioy, 1864 accepted as Aspistyla Duda in Lindner, 1933
- Genus Macrothorax Lioy, 1864 accepted as Polyodaspis Duda in Lindner, 1933
- Genus Malloewia Sabrosky, 1980
- Genus Marcostyla
- Genus Medeventor Wheeler, 2007
- Genus Meijerella Sabrosky, 1976
- Genus Melanochaeta Bezzi, 1906
- Genus Melanochaetomyia Cherian, 2002
- Genus Melanum Becker, 1910
- Genus Mepachymerus Speiser in Sjöstedt, 1910
- Genus Merectecephala Duda, 1930
- Genus Merobates Duda, 1934
- Genus Merochlorops Hewlett in Maxwell-Lefroy, 1909
- Genus Merodonta Malloch, 1940
- Genus Meromyza Meigen, 1830
- Genus Meromyza Stephens, 1829 accepted as Meromyza Meigen, 1830
- Genus Meromyzella Andersson, 1977
- Genus Meroscinis Meijere, 1908
- Genus Metapostigma Becker, 1931 accepted as Metopostigma Becker, 1903
- Genus Metasiphonella Duda, 1930
- Genus Metopostigma Becker, 1903
- Genus Microcercis Beschovski, 1978
- Genus Microchaetaspis Duda, 1930
- Genus Microneurm
- Genus Microneurum Becker, 1903
- Genus Mimogaurax Hall, 1937
- Genus Mimosepsis Sabrosky, 1951
- Genus Minda Paramonov, 1957
- Genus Monochaetoscinella Duda, 1930
- Genus Myrmecomorpha Blanchard, 1840 accepted as Myrmemorpha Dufour, 1833
- Genus Myrmecomorpha Agassiz, 1846 accepted as Myrmemorpha Dufour, 1833
- Genus Myrmecosepsis Kertész, 1914
- Genus Myrmemorpha Dufour, 1833
- Genus Myrmenorpha
- Genus Nartshukiella Beschovski, 1981
- Genus Neoborborus Rayment, 1931
- Genus Neochloropsina Riccardi & Amorim, 2020
- Genus Neodiplotoxa Malloch, 1914
- Genus Neoelachiptera Séguy, 1938
- Genus Neogaurax Malloch, 1914
- Genus Neohaplegis Beschovski, 1981
- Genus Neolcella Cherian, 1996
- Genus Neoloxotaenia Sabrosky, 1964
- Genus Neoolcanabates Duda, 1930
- Genus Neorhodesiella Cherian, 2002
- Genus Neoscinella Sabrosky, 1980
- Genus Neuropachys Thalhammer, 1913
- Genus Nippomera Fedoseeva & Nartshuk in Narchuk & Fedoseeva, 1983
- Genus Nomba Walker, 1860
- Genus Notaulacella Enderlein, 1911
- Genus Notoanaulax
- Genus Notonaulax Becker, 1903
- Genus Ochtherisoma Becker, 1911
- Genus Oedesiella Becker, 1910
- Genus Olcanabates Enderlein, 1911
- Genus Olcanabathes Enderlein, 1911 accepted as Olcanabates Enderlein, 1911
- Genus Olcella Enderlein, 1911
- Genus Omachaeta
- Genus Omochaeta Duda, 1930
- Genus Onychaspidium Enderlein, 1911
- Genus Opetiophora Loew, 1872
- Genus Ops Becker, 1910 accepted as Homops Speiser, 1923
- Genus Opsiceras Séguy, 1946
- Genus Oscinella Becker, 1909
- Genus Oscinelloides Malloch, 1940
- Genus Oscinicita Wheeler, 2007
- Genus Oscinimorpha Lioy, 1864
- Genus Oscinis Latreille, 1804
- Genus Oscinisoma Lioy, 1864
- Genus Oscinoides Malloch, 1916
- Genus Oscinomorpha Enderlein, 1911 accepted as Oscinimorpha Lioy, 1864
- Genus Oscinosoma Enderlein, 1911 accepted as Oscinisoma Lioy, 1864
- Genus Oxyapium Becker, 1912
- Genus Pachychaeta Loew, 1845
- Genus Pachychaetina Hendel, 1907 accepted as Melanochaeta Bezzi, 1906
- Genus Pachycheta Becker in Becker-Kertész, 1905 accepted as Melanochaeta Bezzi, 1906
- Genus Pachychoeta Bezzi, 1895 accepted as Melanochaeta Bezzi, 1906
- Genus Pachylophus Loew, 1858
- Genus Paraapallates Cherian & Tilak, 2008
- Genus Paracalamoncosis Riccardi & Bazyar in Riccardi et al., 2018
- Genus Paracamarota Cherian, 1991
- Genus Paraeurina Duda in Lindner, 1933
- Genus Parahippelates Becker, 1911
- Genus Parameijerella Cherian, 1991
- Genus Parasiphonella Enderlein, 1913
- Genus Parectecephala Becker, 1910
- Genus Paroedesiella Enderlein, 1936 accepted as Paroedesiella Anonymous, 1937
- Genus Paroedesiella Anonymous, 1937
- Genus Paroedesiella Sabrosky, 1941 accepted as Paroedesiella Anonymous, 1937
- Genus Paroscinella Becker, 1913
- Genus Pemphigonotus Lamb, 1917
- Genus Pentanotaulax Enderlein, 1911
- Genus Phyladelphus Becker, 1910
- Genus Planuria Meigen, 1826
- Genus Platycephalisca Narchuk, 1959
- Genus Platyina Malloch, 1927
- Genus Polydecta Gistl, 1848 accepted as Eurina Meigen, 1830
- Genus Polyodaspis Duda in Lindner, 1933
- Genus Prionoscelus Becker, 1911
- Genus Protohippelates Andersson, 1977
- Genus Protoscinella Hennig, 1965 †
- Genus Protoscinis Cockerell, 1917 †
- Genus Pselaphia Becker, 1911
- Genus Pselaphila Becker, 1912 accepted as Pselaphia Becker, 1911
- Genus Pseudeurina Meijere, 1904
- Genus Pseudochlorops Duda, 1930
- Genus Pseudochlorops Malloch, 1914
- Genus Pseudochromatopterum Deeming, 1981
- Genus Pseudogampsocera Sabrosky, 1964
- Genus Pseudogaurax Malloch, 1915
- Genus Pseudogaurax Duda, 1930 accepted as Pseudogaurax Malloch, 1915
- Genus Pseudogoniopsita Duda, 1934
- Genus Pseudohippelates Malloch, 1913
- Genus Pseudonomba Cherian, 1989
- Genus Pseudopachychaeta Strobl, 1902
- Genus Pseudoscinella Duda, 1931
- Genus Pseudothaumatomyia Narchuk, 1963
- Genus Pseudotricimba Ismay, 1993
- Genus Psilacrum Becker, 1912
- Genus Psilochlorops Duda, 1930
- Genus Pterogaurax Duda, 1930
- Genus Rhodesia Adams, 1905 accepted as Rhodesiella Adams, 1905
- Genus Rhodesiella Adams, 1905
- Genus Rhopalopternum Duda, 1930 accepted as Rhopalopterum Duda, 1929
- Genus Rhopalopterum Duda, 1929
- Genus Sabeurina Deeming, 2014
- Genus Sabroskyina Beschovski, 1987
- Genus Sacatonia Sabrosky, 1967
- Genus Schumanniella Beschovski, 1981
- Genus Sclerophallus Beschovski, 1978
- Genus Scoliophthalmus Becker, 1903
- Genus Semaranga Becker, 1911
- Genus Sepsidoscinis Hendel, 1914
- Genus Siphlus Loew, 1858
- Genus Siphomyia Williston, 1896
- Genus Siphonella Macquart, 1835
- Genus Siphonellomyia Séguy, 1934
- Genus Siphonellopsina Andersson, 1977
- Genus Siphonellopsis Strobl, 1906
- Genus Siphunculina Rondani, 1856
- Genus Speccafrons Sabrosky, 1980
- Genus Steleocerellus Frey, 1961
- Genus Steleocerus Becker, 1910 accepted as Mepachymerus Speiser in Sjöstedt, 1910
- Genus Stenophthalmus Becker, 1903
- Genus Stenoscinis Malloch, 1918
- Genus Stizambia Enderlein, 1936 accepted as Stizambia Sabrosky, 1941
- Genus Stizambia Sabrosky, 1941 accepted as Dicraeus Loew, 1873
- Genus Strandimyia Duda, 1930
- Genus Stratiomicroneurum Duda, 1933
- Genus Strobliola Czerny, 1909
- Genus Syphonella Perris, 1839 accepted as Siphonella Macquart, 1835
- Genus Syphonerina Séguy, 1938
- Genus Tachinoceras de Meijere, 1921
- Genus Tachinoceros
- Genus Teleocoma Aldrich, 1924
- Genus Terusa Kanmiya, 1983
- Genus Thaumatomyia Zenker, 1833
- Genus Thressa Walker, 1860
- Genus Thyridula Becker, 1911
- Genus Togeciphus Nishijima, 1955
- Genus Trachysiphonella Enderlein, 1936
- Genus Trichieurina Duda in Lindner, 1933
- Genus Tricimba Lioy, 1864
- Genus Tricimbomyia Cherian, 1989
- Genus Tricymba Marschall, 1873 accepted as Tricimba Lioy, 1864
- Genus Trigonomma Enderlein, 1911
- Genus Tropidoscinis Enderlein, 1911
- Genus Tylopterna Bezzi, 1916
- Genus Vanchium Cherian, 1999
- Genus Xena Narchuk, 1964
- 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 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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