Simulations calculated Tyrannosaurus speed from the motion of its swaying tail, finding that the massive dinosaur was a ...

T. Rex Ambush. Clip: Episode 1 | 1m 56s Video has Closed Captions | CC. At 13 feet tall, and weighing almost nine tons, Tyrannosaurus Rex was one of the largest predators to walk the earth.

T. Rex and Triceratops face off in a brutal showdown that shakes the earth. Two titans of the age of dinosaurs, Tyrannosaurus Rex and Triceratops, stand off in a fight of the ages.

More than 85 million years ago, a smaller-bodied ancestor of the Tyrannosaurus rex roamed the plains of Mongolia. The dinosaur's identity was unknown — until now.

Tyrannosaurus rex may have been a cannibal. A young Yale University scientist, Nicholas Longrich, reports finding tooth marks on the feet and arms of four different T. rex fossils -- marks that ...

Paleontologists have discovered a new species of dinosaur that was related to the infamous Tyrannosaurus rex. The dino fossils, two partial skeletons found in Gobi Desert in Mongolia in the 1970s ...

Tyrannosaurus rex skin? Yes, the remnants of the prehistoric predator are being used to create synthetic T. rex leather, which can be turned into accessories including purses.

Cast of a Tyrannosaurus rex tooth. This specimen is a cast of a tooth from a Tyrannosaurus rex (T. rex), which is now extinct. This theropod, or two-legged dinosaur, is a well-known carnivore with ...

Paleontologists have discovered a new species of dinosaur that was related to the infamous Tyrannosaurus rex. The dino fossils, two partial skeletons found in Gobi Desert in Mongolia in the 1970s, ...