from the GNU version of the Collaborative International Dictionary of English

  • n. An extinct Miocene mammal of the Horse family, closely related to the genus Anhithecrium, and having three usable hoofs on each foot.

from The Century Dictionary and Cyclopedia

  • n. A genus of fossil perissodactyl ungulates referred to the family EquidÅ“, occurring in the Miocene strata of North America. These animals were about the size of sheep.


Sorry, no etymologies found.


  • But what gained greatest attention, especially from ranchers in the west, was his discovery in subsequent years of handsome skeletons of four of the progenitors of the horse: eohippus, mesohippus, miohippus and the crucial, determinative merychippus.



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