A remarkably complete tyrannosaur specimen, unearthed in the middle of Montana, may finally settle one of the most contentious debates in paleontology and upend our understanding of Tyrannosaurus rex, ...

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 ...

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