Classification of the subfamily Hesperocyoninae
Subfm. †Hesperocyoninae Tedford 1978
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G. †Cynodesmus Scott 1893
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†Cynodesmus martini Wang 1994
†Cynodesmus thooides Scott 1893
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Invalid names: Brachyrhynchocyon douglasi Macdonald 1970 [synonym], Mesocyon drummondanus Douglass 1903 [synonym], Sunkahetanka sheffleri Macdonald 1967 [synonym]
G. †Ectopocynus Wang 1994
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†Ectopocynus antiquus Wang 1994
†Ectopocynus intermedius Wang 1994
†Ectopocynus simplicidens Wang 1994
G. †Enhydrocyon Cope 1879
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†Enhydrocyon basilatus Cope 1879
†Enhydrocyon crassidens Matthew 1907
†Enhydrocyon pahinsintewakpa Macdonald 1963
Invalid names: Hyaenocyon Cope 1879 [synonym], Hyaenocyon sectorius Cope 1883 [nomen vanum]
G. †Hesperocyon Scott 1890
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†Hesperocyon coloradensis Wang 1994
†Hesperocyon gregarius Cope 1873
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Invalid names: Amphicyon gracilis Leidy 1856 [synonym], Cynodictis hylactor Hay 1899 [synonym], Cynodictis paterculus Matthew 1903 [synonym], Nanodelphys mcgrewi Russell 1972 [synonym]
Invalid names: Alloeodectes Russell 1984 [synonym], Pseudocynodictis Schlosser 1902 [synonym]
G. †Mesocyon Scott 1890
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†Mesocyon coryphaeus Cope 1879
†Mesocyon temnodon Wortman and Matthew 1899
Invalid names: Hypotemnodon Eyerman 1894 [synonym], Mesocyon josephi secundus Thorpe 1922 [invalid subgroup]
G. †Osbornodon Wang 1994
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†Osbornodon brachypus Cope 1881
†Osbornodon fricki Wang 1994
†Osbornodon iamonensis Sellards 1916
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Invalid names: Cynodesmus nobilis Simpson 1932 [synonym], Paradaphoenus tropicalis White 1942 [synonym]
†Osbornodon renjiei Wang 1994
†Osbornodon scitulus Hay 1924
†Osbornodon sesnoni Macdonald 1967
†Osbornodon wangi Hayes 2000