TyrannosaurusDR2 by Dinoraul
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Tyrannosaurus; meaning "tyrant lizard", is a genus of coelurosaurian theropod dinosaur. The species Tyrannosaurus rex, lived throughout what is now western North America. Fossils are found in a variety of rock formations dating to the Maastrichtian age of the upper Cretaceous Period, 67 to 65.5 million years ago. It was the largest known tyrannosaurid and one of the largest known land predators, the most complete specimen measuring up to 12.3 m (40 ft) in length, up to 4 metres (13 ft) tall at the hips,