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ZoomDinosaurs.com Tyrannosaurus rex |
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ZoomDinosaurs.com Tyrannosaurus rex |
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Tyrannosaurus rex Bones Go to T. rex Skeleton Printout |
Tyrannosaurus rex was a meat-eater about 40 feet (12.4 m) long, about 15-20 feet (4.6-6 m) tall, and about 5-7 tons in weight. T. rex probably had about 200 bones, roughly the same as us (no one knows exactly how many it had, since no complete T. rex skeletons have been found). About a dozen T. rex skeletons have been found.
SKULL AND JAWS
Like all other dinosaurs, T. rex walked on its toes; the scientific term for this is digitigrade. Other animals that are digitigrade include dogs, cat, and chickens. There is a pad of tissue on the back of the feet on these animals that acts like a shock absorber. People, bears, and crocodiles walk differently; they are plantigrade (flat-footed).
T. rex had tiny arms in comparison with the rest of its body. The upper part of the arm was imbedded in its body, rendering the arms almost useless and with a very limited range of motion. T rex's arms couldn't even reach its mouth!
T. rex was a saurischian dinosaur, a "lizard-hipped" dinosaur. This type of dinosaur had a hip structure in which the pubis bone pointed forwards and downwards (unlike the ornithischian dinosaurs in which the pubis pointed backwards and downwards).
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