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

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

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 ...

It is no secret that the tyrannosaurus rex was one of the largest carnivorous creatures to walk the earth millions of years ago, but a new study suggests it may have taken the predator decades to ...

Watch as a fruit is transformed into a prehistoric monster using three shades of green layered to perfection. The process ...

Paleontologists have long debated claims of a dinosaur powerful enough to challenge T-Rex. Fossil evidence suggests encounters between massive predators, but the remains are incomplete and open to ...

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

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

An analysis of growth rings in the leg bones of 17 Tyrannosaurus rex individuals reveals that the dinosaurs matured much more ...