A newly described Patagonian fossil reveals the evolutionary origins and global spread of the tiny alvarezsaur dinosaurs.

The semi-aquatic dinosaur, Spinosaurus mirabilis, was discovered by an international team of scientists working in Niger.

A near-complete fossil from Patagonia has finally cracked open the mysterious evolutionary history of one of prehistory's strangest dinosaur groups ...

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

Add Yahoo as a preferred source to see more of our stories on Google. New dinosaur fossils were discovered at the Dinosaur National Monument, leading to the first excavation there in more than 100 ...

A triceratops skeleton that stood in a Wyoming museum for decades will be auctioned off, a rare instance of a ...

WASHINGTON, Feb 25 (Reuters) - In Argentina's Patagonia region 95 million years ago, some huge dinosaurs roamed the landscape ...

Finding dinosaur fossils on the island of Ireland is harder than finding a "needle in a haystack", the curator of geology at National Museums Northern Ireland has said. But the only two ever to have ...

Add Yahoo as a preferred source to see more of our stories on Google. Fossil quarry hall at Dinosaur National Monument in Utah, July 6, 2013. (David Fulmer via Flickr CC 2.0) Construction crews have ...

Three tiny Purgatorius teeth found in Colorado are helping scientists trace how early primates evolved and spread across North America.

A routine parking lot project at Dinosaur National Monument has unearthed dinosaur fossils at the site for the first time in more than a century. Workers uncovered the fossils near the Quarry Exhibit ...