A revision of the genus Orohippus (Perissodactyla, Equidae)

D. B. Kitts

1957

Article

American Museum Novitates 1864:1-40

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Taxonomy:

• Helotherium belongs to Orohippus - Kitts (1957)
• Oligotomus belongs to Orohippus - Kitts (1957)
• Orohippus atavus belongs to Orohippus pumilus - Kitts (1957)
• Orotherium belongs to Orohippus - Kitts (1957)