A chicken-sized dino, the oldest known in North America, has thrown a wrench in the widely accepted timeline of early ...

Dinosaurs inhabited the Northern Hemisphere millions of years earlier than scientists previously thought, according to the new research.

How and when did dinosaurs first emerge and spread across the planet more than 200 million years ago? That question has for ...

This discovery challenges the long-held belief that dinosaurs originated exclusively in the southern supercontinent, Gondwana.

Researchers discovered Ahvaytum bahndooiveche fossils in Wyoming, revealing dinosaurs in Laurasia earlier than believed.

For decades, paleontologists have debated how and when dinosaurs emerged and spread across the planet more than 200 million ...

Scientists have discovered the oldest known animal with saber teeth: a predator that lived 270 million years ago. This animal, from before the age of the dinosaurs, was a dog-like creature that was ...

The eastern hellbender, a giant salamander that evolved on the supercontinent Pangaea and outlived the dinosaurs, is proposed for federal protection.

The eastern hellbender, a giant salamander also known as a snot otter, evolved on the supercontinent Pangaea and outlived the dinosaurs.