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

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

A comprehensive analysis of Tyrannosaurus rex fossils is surprising scientists with just how long these apex predators took ...

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

For decades, scientists have been counting annual growth rings—similar to tree rings—inside fossilized leg bones of ...

Previous studies had estimated time to max size for T. rex at about 25 years, but the new data indicates that it grew more ...

Dr Holly Ballard and her team at Oklahoma State University studied leg bones from 17 different T.rex fossils to get a better ...

Dinosaur bones are like trees—every year is represented by a new ring, and paleontologists can count those concentric circles ...

A study suggests that the Tyrannosaurus Rex reached its massive size over 40 years, contradicting earlier estimates of a ...

Almost everyone has heard of Tyrannosaurus rex, but how much do you actually know about this iconic dinosaur predator? Take ...

A new approach using the hyoid bone uncovered distinct growth patterns. A new study has brought clarity to a long-running ...

WASHINGTON: There is no question that Tyrannosaurus rex got big. In fact, this fearsome dinosaur may have been Earth’s most massive land predator of all time. But the question of how quickly T. rex ...