Dinosaurs

Dinosaurs' fossilized bone skeletons in natural history museums: tyranosaurus rex, diplodicus, carnotaurus, archosaur, allosaurus, stegosaurus, ankylosaur, dorudon, comptosaurus, mamenchisaurus, dimetrodon, eryops, pteranodon, protostega, hydrosaur, duckbilled

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Dinosaur, prehistoric skeleton: Casting of tail club from Ankylosaur, swung as club to protect itself from predators. Cretaceous Period, 120-65 million years ago. Exhibit Museum of Natural History, University of Michigan, Ann Arbor, August 2006.

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