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

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

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

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

A groundbreaking study on dinosaur populations leading up to their extinction points to sampling biases within the fossil ...

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

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

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

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

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

Small fossils show mammals moved to the ground before the dinosaurs vanished. New plants changed habitats, giving better food ...

The extinction of dinosaurs remains one of the greatest topics in natural history. A new study challenges the idea that they ...