The behemoth dinosaurs grew more slowly and had longer lifespans than previously thought, a new study suggests ...

There is no question that Tyrannosaurus rex got big. In fact, this fearsome dinosaur may have been Earth’s most massive land ...

Dinosaur bones are like trees—every year is represented by a new ring, and paleontologists can count those concentric circles to determine a fossil’s age. Previous estimates put T. rex’s lifespan at ...

A group of researchers has estimated how long it took Tyrannosaurus rex to reach its full size — and the time period is ...

Tyrannosaurus rex is arguably the world’s most famous dinosaur, yet paleontologists are still learning more about this giant ...

Add Yahoo as a preferred source to see more of our stories on Google. FILE PHOTO: Visitors look at a 67 million year-old skeleton of a Tyrannosaurus Rex dinosaur, named Trix, during the first day of ...

A new species of dinosaur related to Tyrannosaurus rex has been discovered in the U.K. Paleontologists at the University of Southampton identified the new species after studying four bones that were ...

By counting visible and hidden rings, researchers found that T. rex did not reach full size until 35 to 40 years of age.

Tyrannosaurus rex is often called the scariest and most feared dinosaur to ever walk the Earth, but science still debates what that reputation truly means. Fossils reveal crushing bite power, a ...

Tyrannosaurus rex is thought to have had one of the most powerful bites of any animal that ever lived. So strong, in fact, that not only could it crush the bones of its prey, but it should have ...

"Stan" - A Tyrannosaurus rex dinosaur fossil skeleton is displayed in a gallery at Christie’s auction house in New York City. The fossil is named after the amateur paleontologist Stan Sacrison, who in ...