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

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

Tyrannosaurus rex, it turns out, may have taken its time becoming king. A new analysis of 17 tyrannosaur fossils suggests the ...

T rexes grew much more slowly than previously thought, taking several decades to reach their full size of around eight tonnes ...

A rare juvenile Tyrannosaurus rex fossil found by three children during a family hike in the North Dakota Badlands nearly two years ago will soon be on display at the Denver Museum of Nature & Science ...

Fossils found 50 years ago were initially thought to belong to another species. Paleontologists have discovered a new species of dinosaur that was related to the infamous Tyrannosaurus rex. The dino ...

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

A cinematic obsessive with the filmic palate of a starving raccoon, Rob London will watch pretty much anything once. With a mind like a steel trap, he's an endless fount of movie and TV trivia, borne ...

When it roamed the Earth 80 million years ago, a 40-foot-long Tyrannosaurus rex was one of nature's most terrifying prospects. Soon, it could be a purse. A group of researchers and bio-engineers in ...