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The Surprising History of America's Wild Horses
Modern horses, zebras, and asses belong to the genus Equus, the only surviving genus in a once diverse family, the Equidae. Based on fossil records, the genus appears to have originated in North America about 4 million years ago and spread to Eurasia (presumably by crossing the Bering land bridge) 2 to 3 million years ago.
Modern horses, zebras, and asses belong to the genus Equus, the only surviving genus in a once diverse family, the Equidae. Based on fossil records, the genus appears to have originated in North America about 4 million years ago and spread to Eurasia (presumably by crossing the Bering land bridge) 2 to 3 million years ago.
Source: LiveScience
Posted on: Friday, Jul 25, 2008, 11:15am
Views: 1680
Posted on: Friday, Jul 25, 2008, 11:15am
Views: 1680
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