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

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

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

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 ...

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

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

(TMX) - A fossil once locked in prehistoric combat has just rewritten one of paleontology’s longest-running debates — and upended what scientists thought they knew about Tyrannosaurus rex. The ...

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

(CNN) — A legendary fossil housed at the North Carolina Museum of Natural Sciences in Raleigh features skeletons apparently locked in prehistoric combat — an epic meeting of two of the world’s ...

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