long-horn bison

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Also spelled longhorn, the long-horn bison was a large mammal that went extinct toward the end of the Pleistocene epoch, either because of climate change, human interference in the form of hunting, or a combination of both. Longhorned bison, or giant Ice Age bison, had a horn span of up to six feet and a body mass up to fifty-percent greater than that of today's bison.

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"Fossilized skeleton of a longhorned, or gian Ice Age, bison from the late Pleistocene epoch." by Daryl Mitchell is licensed under CC BY-SA.