Classification of MacFadden 1986

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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G. †Astrohippus Stirton 1940
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†Astrohippus stocki Lance 1950
G. †Dinohippus Quinn 1955
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†Dinohippus mexicanus Lance 1950