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Protorohippus is an extinct equid that lived in the Eocene of North America.[1]

Protorohippus Green River Formation.jpg
Fossil from the Green River Formation
Scientific classification e
Kingdom: Animalia
Phylum: Chordata
Class: Mammalia
Order: Perissodactyla
Family: Equidae
Genus: Protorohippus
Wortman, 1896
Type species
Protorohippus venticolum
(Cope, 1881)
  • P. venticolum (Cope, 1881)
  • P. montanum Wortman, 18961
  • Hyracotherium venticolum Cope, 1881
  • Hyracotherium vasacciense venticolum Kitts, 1956
  • Eohippus venticolum Granger, 1908
Skeleton cast


  1. ^ Froehlich, D. J. (2002). "Quo vadis eohippus? The systematics and taxonomy of the early Eocene equids (Perissodactyla)". Zoological Journal of the Linnean Society. 134 (2): 141–256. doi:10.1046/j.1096-3642.2002.00005.x.

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