On the final day of the Cretaceous period, some 66 million years ago, Earth was teeming with a dazzling variety of dinosaurs.

Add Yahoo as a preferred source to see more of our stories on Google. Did all dinosaurs become extinct, killed when an asteroid hit the Earth 66 million years ago? Or could a few of them, somehow, ...

The discovery may push back the emergence of the reptiles that once ruled the Earth, and clarify how dinosaurs like the Triceratops and Stegosaurus emerged. By Asher Elbein A dog-size reptile slipped ...

“We went all over Utah, and I went to the Dinosaur National Park, where they have all these Jurassic animals, and you can go and touch everything, and then around there’s also, they call it the ...

Dinosaurs may not have been the slow, sunbathing reptiles researchers used to think. In fact, they may have been warm-blooded, new research suggests. The researchers studied the "growth lines" on ...

With an incredible sail and heavy bones that might have acted as ballast, Spinosaurus seems primed for snatching fish. The creature has long captivated the public, from its early mysteries to the rece ...

Rachael has a degree in Zoology from the University of Southampton, and specializes in animal behavior, evolution, palaeontology, and the environment. Rachael has a degree in Zoology from the ...

A dog-size reptile slipped through fern-choked forests 237 million years ago in what is today Paraíso do Sul, Brazil. The animal had the body of a greyhound, a long neck and tail, and a small, nipping ...

Did all dinosaurs become extinct, killed when an asteroid hit the Earth 66 million years ago? Or could a few of them, somehow, have survived that mass extinction event – with their descendants living ...