dawn horse

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(ˌi oʊˈhɪp əs)

an extinct small horse of the North American Eocene, genus Hyracotherium (Eohippus), having four hoofed toes on the forefeet and three on the hind feet.
[1875–80; < New Latin, =eo- eo- + Greek híppos horse]
ThesaurusAntonymsRelated WordsSynonymsLegend:
Noun1.dawn horse - earliest horsedawn horse - earliest horse; extinct primitive dog-sized four-toed Eocene animal
Equus caballus, horse - solid-hoofed herbivorous quadruped domesticated since prehistoric times
genus Hyracotherium, Hyracotherium - extinct horse genus; formerly called eohippus
References in periodicals archive ?
Believe it or not, Big Bird remembers right back to the time of Eohippus, the Dawn Horse some 50 million years ago.
According to lead author Michael Woodburne, honorary curator of geology at the Museum of Northern Arizona, 50 million years ago, when temperatures were at their highest, the middle of Wyoming was a tropical rainforest teeming with lemur-like primates, small dawn horses and a number of small forest rodents and other mammals.
Among specimens on show are the dawn horses ( remains of dog-sized ancestors to modern horses and not seen by the public for 50 years.