Classification of Webb 1969

Aelurodon meandrinus Hatcher 1894
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G. †Brachypsaloides Webb 1969
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Brachypsaloides modicus Matthew 1918
Procamelus inaequidens Cope and Matthew 1915
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Protolabis francisi Hay 1924
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G. †Strobodon Webb 1969
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Strobodon stirtoni Wang et al. 1999
G. †Brachypsalis Cope 1890
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Brachypsalis pristinus Matthew and Gidley 1904
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Invalid names: Brachypsalis obliquidens Sinclair 1915 [synonym]
G. †Leptarctus Leidy 1856
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Invalid names: Hypsoparia Dorr 1954 [synonym]
G. Martes Frisch 1775 [marten]
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Martes ogygia Matthew 1901
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Invalid names: Martes glareae Sinclair 1915 [synonym]
Fm. Canidae Fischer 1817 [canid]
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G. †Leptocyon Matthew 1918
G. †Tomarctus Cope 1873
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Tomarctus euthos McGrew 1935
G. †Ischyrocyon Matthew and Gidley 1904
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Ischyrocyon gidleyi Matthew 1902
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Invalid names: Ischyrocyon hyaenodus Matthew and Gidley 1904 [synonym], Pliocyon walkerae Johnston and Christian 1941 [synonym]
Ischyrocyon mohavensis Stock and Furlong 1926
Invalid names: Hadrocyon Stock and Furlong 1926 [synonym]
G. †Aepycamelus Macdonald 1956
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Aepycamelus elrodi Douglass 1909
G. †Megatylopus Matthew and Cook 1909
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Megatylopus major Leidy 1886
G. †Procamelus Leidy 1858
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Invalid names: Homocamelus Leidy 1869 [synonym]
G. †Protolabis Cope 1876
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Protolabis fissidens Cope 1876
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Invalid names: Protolabis montanus Douglass 1899 [synonym], Protolabis princetonianus Sinclair 1915 [synonym]
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Invalid names: Procamelus angustidens Cope 1874 [synonym], Procamelus foxi Macdonald 1960 [synonym]
G. †Aletomeryx Lull 1920
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Aletomeryx scotti Matthew 1924
G. †Sphenophalos Merriam 1909
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Sphenophalos floblairi Frick 1937
Invalid names: Plioceros Frick 1937 [synonym]
G. †Astrohippus Stirton 1940
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Astrohippus ansae Matthew and Stirton 1930
Astrohippus martini Hesse 1936
G. †Calippus Matthew and Stirton 1930
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Calippus francisi Hay 1924
G. †Dinohippus Quinn 1955
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G. †Megahippus McGrew 1938
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Megahippus matthewi Barbour 1914
G. †Pliohippus Marsh 1874
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Pliohippus pachyops Cope 1893
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Invalid names: Protohippus simus Gidley 1906 [synonym]
Pliohippus supremus Leidy 1869
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Invalid names: Dinohippus subvenus Quinn 1955 [synonym], Hippotigris clarendonensis Quinn 1955 [synonym], Hippotigris parastylus Quinn 1955 [synonym], Pliohippus lullianus Troxell 1916 [synonym], Protohippus fossulatus Cope 1893 [synonym]
G. †Pseudhipparion Ameghino 1904
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Pseudhipparion gratum Leidy 1869
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Invalid names: Hippodon speciosus Leidy 1854 [synonym], Neohipparion niobrarense Gidley 1906 [synonym]
Invalid names: Griphippus Quinn 1955 [synonym], Hippodon Leidy 1854 [synonym]
Calippus anatinus Quinn 1955
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Invalid names: Astrohippus curtivallis Quinn 1955 [synonym], Calippus optimus Quinn 1955 [synonym]
Cosoryx furcatus Leidy 1869
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Invalid names: Cosoryx burgensis Frick 1937 [synonym]
Cranioceras unicornis Matthew 1918
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Invalid names: Cervavus sinclairi Matthew 1918 [synonym], Cranioceras dakotensis Frick 1937 [synonym], Cranioceras granti Frick 1937 [synonym], Cranioceras mefferdi Frick 1937 [synonym]
Leptarctus primus Leidy 1856
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Invalid names: Hypsoparia bozemanensis Dorr 1954 [synonym]
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Invalid names: Hipparion affine Leidy 1869 [synonym], Hipparion dolichops Gidley 1906 [synonym]
Procamelus grandis Gregory 1939
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Invalid names: Procamelus dakotensis Green 1956 [synonym]
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Invalid names: Procamelus lacustris Douglass 1899 [synonym]
Procamelus robustus Leidy 1858
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Invalid names: Homocamelus caninus Leidy 1869 [synonym], Procamelus madisonius Douglass 1899 [synonym]