-full name:Tyrannosaurus rex (meaning "tyrant lizard king") -lived in western North America 68 to 65 million years ago,at the end of the Late Cretaceous Period -lenght around 13 meters -may have been a predator, preying upon hadrosaurs and ceratopsians, although some experts have suggested it was primarily a scavenger -over 30 specimens of T. rex have been identified, some are nearly complete skeletons -lifetime approximately 30 years -Tyrannosaurus may have been slow to turn, possibly taking one to two seconds to turn only 45° -walking speed 17 km/h (11 mph) to 40 km/h (25 mph),from walking or slow running to moderate-speed running -modelled with Lightwave3D