Who were the Therizinosaurs?
They were gigantic, as big as a Tyrannosaurus Rex. They had huge sharp claws, as long as the “grim reaper’s sythe,” as Dr. Thomas Holtz likes to say. They had bulky bodies, but their heads were small, with leaf-shaped teeth. They belonged to the group called theropods, which are usually the carnivores of the Mesozoic. But these dinosaurs were herbivores. In their ancestry, they switched from eating meat to mostly eating plants, with possibly occasional small bits of meat protein. They lived during the Cretaceous period in North America and Asia.
These were the Therizinosaurs.
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