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Edmontosaurus (Gray, Susan Heinrichs. Exploring Dinosaurs.)
Edmontosaurus - Gray, Susan Heinrichs. Exploring Dinosaurs. Author:Susan Heinrichs Gray Dinosaurs once roamed the earth as living, breathing animals. Nowadays, however, the only way scientists can know more about them is through their fossilized bones. Readers will find out how much has been learned through the discovery and study of Edmontosaurus.