Dinohippus

Dinohippus
Holotype skeleton of Dinohippus leidyanus (AMNH 17224)
Scientific classification
Domain: Eukaryota
Kingdom: Animalia
Phylum: Chordata
Class: Mammalia
Order: Perissodactyla
Family: Equidae
Subfamily: Equinae
Tribe: Equini
Genus: Dinohippus
Quinn, 1955
Type species
Pliohippus leidyanus
Species
  • D. edensis Frick, 1924
  • D. interpolatus Cope, 1893
  • D. leardi Drescher, 1941
  • D. leidyanus Osborn, 1918
  • D. mexicanus Lance, 1950
  • D. osborni Frick, 1924
  • D. pachyops Cope, 1893
  • D. subvenus Quinn, 1955

Dinohippus (Greek: "Terrible horse") is an extinct equid which was endemic to North America from the late Hemphillian stage of the Miocene through the Zanclean stage of the Pliocene (10.3—3.6 mya) and in existence for approximately 6.7 million years. Fossils are widespread throughout North America, being found at more than 30 sites from Florida to Alberta and from Mexico all the way down to Panama (Alajuela Formation). This most numerous fossils of Dinohippus have been unearthed in the Western United States in Nevada, New Mexico, Utah, and California.