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

Everyone knows that dinosaurs are extinct, and most people have some idea about how it might have occurred. But the exact ...

New research suggests the theory that dinosaurs were declining before Chicxulub is the result of a poor (and misleading) ...

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

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

Dinosaur extinction theories suggest populations were dwindling when an asteroid wiped them out. New research is challenging ...

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

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

A new study found dinosaurs were thriving on Earth before asteroid hit, challenging idea they were already in decline before ...

More mammals were living on the ground several million years before the mass extinction event that wiped out the dinosaurs, new research has revealed.

“If it weren’t for that asteroid, they might still share this ... true pattern of dinosaur diversity leading up to the extinction event, said Darla Zelenitsky, a paleontologist at the ...