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Tyrannosaurus rex was a carnivorous theropod dinosaur that walked on strong hind limbs. The brains of T. rex were small relative to the brains of large modern mammals.
Cyndy Parr changed the thumbnail image of "Reconstructed skeleton of Tyrannosaurus rex.".
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© Chip Clark/Smithsonian National Museum of Natural History
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Chip Clark/Smithsonian National Museum of Natural History
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