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

The largest-ever study of how the “king of dinosaurs” grew shows a much longer, slower path to adulthood than scientists ...

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

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

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

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

It took the fearsome T rex 40 years to reach its full size, study finds - Findings extend growth phase of T rex by 15 years ...

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

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

New research from a team including the University of Nebraska State Museum’s Ashley Poust further moves a decades-long scientific debate toward a conclusion — the Nanotyrannus, a teacup variation of ...

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

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