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The Columbian Mammoth, the official state fossil of Washington, crossed the Bering Land Bridge into North America some one million years ago and made a home roaming the vast grasslands that stretched from Alaska to Mexico, mirroring the great Rocky Mountains, and munching down about 300 pounds of vegetation each day. During the Pleistocene this extinct elephant extended his habitat down into Central America to modern day Nicaragua and Honduras before dying out around 12,500 years ago. Photo courtesy of Filippo Bertozzi
