Although Tyrannosaurus rex stood at the top of the food chain, one contemporary dinosaur may have posed an exceptional threat. Fossil evidence offers clues about one of prehistory's greatest rivalries ...

Tyrannosaurus rex was a late developer who kept growing until the age of 40, reveals new research. The largest-ever study of how the “king of dinosaurs” grew shows a much longer, slower path to ...

One hundred years of Tyrannosaurus rex : the skeletons / Neal L. Larson -- Wyoming's Dynamosaurus imperiosus and other early discoveries of Tyrannosaurus rex in the Rocky Mountain West / Brent H.

Add Yahoo as a preferred source to see more of our stories on Google. Palaeontologists have argued for decades whether the Nanotyrannus was a true species in its own right or merely a young ...

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 ...

Revisiting a partial dinosaur skull first discovered in the 1980s has some scientists convinced that what was originally catalogued as a Tyrannosaurus rex in fact represents the closest relative of ...

May 28 (Reuters) - Tyrannosaurus rex was a huge land predator during the twilight of the age of dinosaurs. But it was not the only T. rex that terrorized the Cretaceous Period. There also was a marine ...

Call it shovel and pail-eontology. Three North Dakota boys made the extraordinary discovery of a highly rare Tyrannosaurus rex fossil that could change what we know about dinosaurs. Now, the ...

WASHINGTON — For one person who wanted to own a nearly complete Tyrannosaurus rex skeleton and had a few million dollars burning a hole in their pocket, it was their lucky day. One of the largest and ...