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School Library Journal
Reviewed on December 1, 2009
Gr 5-8 The dire wolf was a stockier version of the gray wolf but had a smaller brain. Gastornis was a six- or seven-foot bird that weighed between 200 and 400 pounds and had stumplike wings. The giant ground sloth was about 20 feet long, weighed 4 tons, and could stand on its hind le...Log In or Sign Up to Read More




