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hyracotherium

[hahy-ruh-koh-theer-ee-uh m] /ˌhaɪ rə koʊˈθɪər i əm/
noun, plural hyracotheria
[hahy-ruh-koh-theer-ee-uh] /ˌhaɪ rə koʊˈθɪər i ə/ (Show IPA)
1.
Also, hyracothere.
Origin
< Neo-Latin (1840): a genus name; see hyrax, -o-, -there
Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2014.
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hyracotherium in Science
hyracotherium
  (hī'rə-kō-thîr'ē-əm)   
Plural hyracotheria
A small primitive horse that lived about 50 million years ago during the early Eocene Epoch. It had three or four hoofed toes on each foot and is considered by some to be the ancestor of modern horses. It is sometimes called the "dawn horse," a translation of its earlier scientific name, Eohippus.
The American Heritage® Science Dictionary
Copyright © 2002. Published by Houghton Mifflin. All rights reserved.
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