The menacing asteroid that wiped out non-avian dinosaurs left a colossal marine crater in what's now the Yucatan Peninsula.

About 66 million years ago, an asteroid slammed into the planet, wiping out all non-avian dinosaurs and about 70% of all ...

The number of dinosaurs may have been stable before the asteroid impact, despite evidence that species were getting less ...

A new study suggests that dinosaurs likely weren't in decline before an asteroid wiped them out 66 million years ago; instead ...

An analysis of North America’s fossil record for the 18 million years before dinosaurs disappeared suggests the prehistoric ...

A new study challenges the idea that dinosaurs were declining before the asteroid impact. Researchers at UCL Earth Sciences ...

Researchers suggest that ground-based mammals fared better than their arboreal relatives during the end-Cretaceous extinction ...

New analysis shows several families of dinosaurs were likely thriving in North America in the latter days of the dinosaur era ...

The dinosaurs were not in decline before the asteroid hit, a new study finds. Instead, poor fossilization conditions and ...

The idea that dinosaurs were already in decline before an asteroid wiped most of them out 66 million years ago may be ...

Dinosaurs may not have been declining before the asteroid impact after all – new research shows that the apparent drop in ...