Definition of "eohippus" []

• Hyracotherium. (noun)

American Heritage(R) Dictionary of the English Language, Fifth Edition. Copyright (c) 2011 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.

• "The Valley somehow has various beasties from pre-history including the eohippus and the allosaurus."
• "Unlike gastornids the ones you always see in kids books flogging the dead eohippus, phorusrhacids had runner's legs."
• "But a new class of horse stepped forward, shouldering its way between a sturdy Morgan and a deerlike eohippus."