This impressive and well-known dinosaur has one odd feature: its disproportionately small arms. A paleontologist says that multiple T. rexes feeding on the same carcass could have spelled disaster as ...

A provocative study published earlier this year proposed that the world's best-known and perhaps best-loved dinosaur, Tyrannosaurus rex, was actually three separate species. Not so fast, says new ...

This suggests the dinosaurs hunted different prey at various stages of life. The faster juvenile T. Rexes probably chased ...

Add Yahoo as a preferred source to see more of our stories on Google. FILE PHOTO: A girl looks at the skull of Tyrannosaurus rex "Tristan Otto," one of the most complete specimens worldwide, during ...

The Tyrannosaurus rex seemingly came out of nowhere tens of millions of years ago, with its monstrous teeth and powerful jaws dominating the end of the age of the dinosaurs. How it came to be is among ...

How long are a typical adult’s arms? The length can vary of course, but on average, a human man’s wingspan is about two inches longer than his height, and a woman’s is about half an inch longer than ...