Eohippus

ahd-5
  • noun. A hyracotherium.
  • The Century Dictionary and Cyclopedia
  • noun. A genus of Eocene horses, representing the oldest known type of the family Equidæ, founded by Marsh (1876) upon remains from the coryphodon-beds of the Lower Eocene of New Mexico, indicating a kind of horse about as large as a fox, with four toes and a half on each fore foot, all incased in horn and forming hoofs, and three hoofed toes on each hind foot.
  • the GNU version of the Collaborative International Dictionary of English
  • noun. an extinct primitive dog-sized 4-toed Eocene mammal, the earliest horse known in the line of descent of the modern horse. It is classed in the extinct genus Hydracotherium. Called also dawn horse.
  • Wiktionary, Creative Commons Attribution/Share-Alike License
  • noun. Extinct early Eocene mammal, Hyracotherium leporinum
  • WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.
  • noun. earliest horse; extinct primitive dog-sized four-toed Eocene animal
  • Word Usage
    "The Valley somehow has various beasties from pre-history including the eohippus and the allosaurus."
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