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

Despite previous research, Earth's long-gone mega-reptiles probably weren't dying off before an impact winter did them in for ...

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

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

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

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

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

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

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

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

Dinosaurs were not in decline before the asteroid hit, instead poor fossilisation conditions and unexposed late Cretaceous ...