Classification of Osborn 1904

Fm. Equidae Gray 1821 [horse]
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Invalid names: Miohippus ultimus Cope 1886 [invalid subgroup]
G. †Anchitherium von Meyer 1844
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G. Equus Linnaeus 1758 [horse]
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Equus montezuma Leidy 1882
G. †Hipparion de Christol 1832
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Hipparion whitneyi Gidley 1903
G. †Hypohippus Leidy 1858
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Hypohippus australis Leidy 1873
Hypohippus equinus Scott 1893
G. †Merychippus Leidy 1856
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Merychippus sejunctus Cope 1874
G. †Mesohippus Marsh 1875
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Mesohippus bairdi Leidy 1850
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Invalid names: Anchitherium cuneatum Cope 1873 [synonym]
Mesohippus brachystylus Osborn 1904
Mesohippus celer Marsh 1874
Mesohippus equiceps Cope 1878
Mesohippus eulophus Osborn 1904
Mesohippus gidleyi Osborn 1904
Mesohippus hypostylus Osborn 1904
Mesohippus intermedius Osborn and Wortman 1895
Mesohippus latidens Douglass 1903
Mesohippus meteulophus Osborn 1904
Mesohippus montanensis Osborn 1904
Mesohippus obliquidens Osborn 1904
Mesohippus proteulophus Osborn 1904
Mesohippus validus Osborn 1904
Mesohippus westoni Cope 1889
Invalid names: Anchitherium exoletum Cope 1874 [nomen dubium]
G. †Miohippus Marsh 1874
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Miohippus anceps Marsh 1874
Miohippus annectens Marsh 1874
Miohippus condoni Leidy 1870
Miohippus crassicuspis Osborn 1904
G. †Parahippus Leidy 1858
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Parahippus agrestis Leidy 1873
G. †Colodon Marsh 1890
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Colodon copei Osborn and Wortman 1895
Colodon longipes Osborn and Wortman 1894
G. †Aphelops Owen 1845
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Aphelops longipes Leidy 1890
Aphelops planiceps Osborn 1904
Aphelops profectus Matthew 1899
G. †Teleoceras Hatcher 1894
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Teleoceras medicornutum Osborn 1904
G. †Metacheiromys Wortman 1903
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Metacheiromys dasypus Osborn 1904
Metacheiromys tatusia Osborn 1904
G. †Caenopus Cope 1880
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Caenopus persistens Osborn 1904
Teleoceras fossiger Cope 1878
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Invalid names: Rhinoceros proterus Leidy 1885 [synonym]