The Jurassic Period is one of the three prehistoric geological periods of the Mesozoic Era. It spans from 145 million to 201 million years ago. This period was preceded by the Triassic Period and ...

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

Long before the asteroid hit Earth and wiped out the dinosaurs, many mammals had already started living on the ground, ...

Behind those mowers angiosperms adapted to freshly cut ground and kept spreading. Dinosaurs disappeared suddenly about 65 million years ago, and another group of animals took their place—the ...