account
search
search
Jump to
Latest Headlines Wiki
share with facebook
share with twitter
share with google
1 of 2
WALKING WITH DINOSAURS: THE LIVE EXPERIENCE LAUNCHES IT'S NORTH AMERICAN TOUR
Five-year-old Scott, held by his father Steve Brewer, plays with a stuffed T-Rex while attending "Walking with Dinosaurs" at the Tacoma Dome in Tacoma, Washington on July, 11, 2007. The 90- minute show, based on the award-winning BBC Television series kicked off it's seven city tour in the U.S. and Canada. 15 dinosaurs, which roamed the earth about 208 million years ago, have been brought back to life via truck batteries, hydraulics and puppeteers in the 90-minute show, Walking with Dinosaurs - The Live Experience, based on the award-winning BBC Television series kicked off it's seven city Summer tour in the U.S. and Canada. (UPI Photo/Jim Bryant)
| License Photo
Latest Headlines
First Prev Page 1 of 2 Last Next
Wiki

Tyrannosaurus (pronounced /tɨˌrænɵˈsɔrəs/ or /taɪˌrænɵˈsɔrəs/, meaning 'tyrant lizard') from the Greek words τυράννος (tyrannos, meaning "tyrant") and σαύρος' (sauros, meaning "lizard"), is a genus of theropod dinosaur. The species Tyrannosaurus rex ('rex' meaning 'king' in Latin), commonly abbreviated to T. rex, is a fixture in popular culture. It lived throughout what is now western North America, with a much wider range than other tyrannosaurids. Fossils are found in a variety of rock formations dating to the last two million years of the Cretaceous Period, 67 to 65.5 million years ago. It was among the last non-avian dinosaurs to exist prior to the Cretaceous–Tertiary extinction event.

Like other tyrannosaurids, Tyrannosaurus was a bipedal carnivore with a massive skull balanced by a long, heavy tail. Relative to the large and powerful hindlimbs, Tyrannosaurus forelimbs were small, though unusually powerful for their size, and bore two clawed digits. Although other theropods rivaled or exceeded Tyrannosaurus rex in size, it was the largest known tyrannosaurid and one of the largest known land predators, measuring up to 12.8 m (42 ft) in length, up to 4 metres (13 ft) tall at the hips, and up to 6.8 metric tons (7.5 short tons) in weight. By far the largest carnivore in its environment, Tyrannosaurus rex may have been an apex predator, preying upon hadrosaurs and ceratopsians, although some experts have suggested it was primarily a scavenger. The debate over Tyrannosaurus as apex predator or scavenger is among the longest running debates in paleontology.

More than 30 specimens of Tyrannosaurus rex have been identified, some of which are nearly complete skeletons. Soft tissue and proteins have been reported in at least one of these specimens. The abundance of fossil material has allowed significant research into many aspects of its biology, including life history and biomechanics. The feeding habits, physiology and potential speed of Tyrannosaurus rex are a few subjects of debate. Its taxonomy is also controversial, with some scientists considering Tarbosaurus bataar from Asia to represent a second species of Tyrannosaurus and others maintaining Tarbosaurus as a separate genus. Several other genera of North American tyrannosaurids have also been synonymized with Tyrannosaurus.

This article is licensed under the GNU Free Documentation License.
It uses material from the Wikipedia article "T. Rex."
x
Feedback