A huge 74-million-year-old shin bone found in New Mexico may have belonged to a close relative of the famous Tyrannosaurus ...

Tyrannosaurus rex is one of the most recognizable names of the dinosaur world, a hulking and terrifying meat-eating behemoth.

A 66-million-year-old Edmontosaurus skull at the Museum of the Rockies preserves a Tyrannosaurus tooth, capturing a rare ...

“Sue was found in much younger rocks than this tibia, so our tyrannosaur was the largest predatory dinosaur of its kind,” ...

Paleontologists have often determined how old a dinosaur was by counting the growth rings in its bones. Just like with trees, ...

A paleontologist and a team of volunteers recently made a historic discovery at a Maryland park known for its fossils, according to an announcement from the Maryland-National Capital Park and Planning ...

The little dinosaur had been dead for roughly 100 million years before anyone thought to scan the rock it was buried in. When researchers finally did, what emerged on their screens stopped them cold.

Until now, estimating how old a dinosaur was when it died has been a fairly simple process — just count up the growth rings in its fossilized bones. "We always thought that those rings were formed ...