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When Giant Mammals Thundered: The Cenozoic Era
When Giant Mammals Thundered The Cenozoic Era Author:Jean F. Blashfield Imagine the blooming of the very first flower. Or a 3-ton sloth with massive claws standing as tall as a giraffe. And horses the size of small dogs that have toes instead of hooves. This is not a dream or vision of an artist or author. This is North Am