Classification of Ferrusquía-Villafranca et al. 2014

Cl. Mammalia Linnaeus 1758 [mammal]
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Or. Perissodactyla Owen 1848 [odd-toed ungulate]
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Fm. Equidae Gray 1821 [horse]
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Subfm. Equinae Steinmann and Döderlein 1890
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Tr. Equini Quinn 1955 [horse]
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G. †Pliohippus Marsh 1874
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†Pliohippus potosinus Ferrusquía-Villafranca et al. 2014