Walking with Prehistoric Beasts Worksheet Movie Summary: Walking With Prehistoric Beasts examines the various Cenozoic eras, when mammals began to dominate after the massive late Cretaceous extinction that killed 65% of life on Earth, including the... (more details for Walking with Prehistoric Beasts*)

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File #318 Info: Created by Carol Richlin on August 24, 2008 using New York State standards for students at a grade 9-10 level.

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