In the past, analysis of Tyrannosaurus rex bones suggested that the enormous dinosaurs died by the age of 30. But a new study ...

Pioneering techniques used in this research may soon be applied to other dinosaur fossils and alter the course of ...

By Will Dunham WASHINGTON, Jan 15 (Reuters) - There is no question that Tyrannosaurus rex got big. In fact, this fearsome ...

Using polarised light, the team identified previously unknown growth marks that had gone undetected in earlier studies. These ...

A new study reveals Tyrannosaurus rex took 40 years to reach full size, not 30, as previously thought. Researchers analyzed ...

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

A study of fossil bones shows Tyrannosaurus rex kept growing until around age 40, challenging long-held ideas about dinosaur ...

A Tyrannosaurus rex found in central Canada in the 1990s is the heaviest and oldest of its kind, paleontologists recently announced. The dinosaur, nicknamed Scotty, probably weighed about 9.8 tons and ...

Tyrannosaurus rex lived longer and took more time to reach its maximum size than previously thought, according to a new study.

Jan. 11—Question: What's toothy, about 73 million years old, and hails from south-central New Mexico? The answer: A new species of dinosaur, discovered by a team of paleontologists associated with the ...

Add Yahoo as a preferred source to see more of our stories on Google. Despite what's depicted in movies and books, the real Tyrannosaurus rex was likely an awkward swimmer at best. Illustration by ...