WASHINGTON — New research pinpoints how the torch passed from one dominant creature on Earth to another, from the brutish dinosaur to the crafty mammal. Two studies published Thursday in the journal ...

Scientists discovered three new mammal species that survived in Alaska’s ancient Arctic during the age of dinosaurs.

What starts with the asteroid that killed the dinosaurs quickly becomes a journey through the entire rise of modern life on ...

Thanks a lot, jerks.

Mammals have long been considered the Rodney Dangerfields of dinosaur times. Our distant ancestors have been seen as inconsequential, wannabes, hiding out in burrows or scurrying about at night to ...

Dinosaurs roamed the Earth hundreds of millions of years ago and were among the most feared creatures on the planet. But the discovery of a remarkable fossil in China suggests smaller mammals may have ...

Add Yahoo as a preferred source to see more of our stories on Google. A microbiologist named João Pedro de Magalhães has proposed the idea that the reign of dinosaurs forced mammals to speed up their ...