the earliest known horse, a member of the extinct genus Hyracotherium (Eohippus), from the early Eocene Epoch of the Northern Hemisphere; a terrier-sized herbivore having four hoofed toes on each forefoot and three on each hind foot, and low-crowned teeth.
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How to use eohippus in a sentence
The oldest of these creatures that lead to the horses is called eohippus or beginning horse.Young Folks' Library, Volume XI (of 20) | Various
He would not be more astonished than would the ancient eohippus on meeting with a modern dray-horse.Theism or Atheism | Chapman Cohen
He had framed out another plan for the little eohippus—namely, to give him to Miss Ellinor.Bransford of Rainbow Range | Eugene Manlove Rhodes
The earliest stage that we can trace with certainty, in this line of descent, is found in the eohippus of Marsh.Evolution | Joseph Le Conte
Orohippus was but little larger than eohippus, and in most other respects very similar.Darwinism (1889) | Alfred Russel Wallace
British Dictionary definitions for eohippus
the earliest horse: an extinct Eocene dog-sized animal of the genus with four-toed forelegs, three-toed hindlegs, and teeth specialized for browsing
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012
Scientific definitions for eohippus
The American Heritage® Science Dictionary Copyright © 2011. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.