Roughly 201 million years ago, drastic changes extinguished many forms of life and led to conditions that allowed the ...

Explore the age of the dinosaurs. Discover what the prehistoric world was like and how it changed between when dinosaurs first appeared and the mass extinction at the end of the Cretaceous Period. Non ...

The remains of the earliest dinosaurs may lie undiscovered in the Amazon and other equatorial regions of South America and ...

The researchers also found evidence that silesaurids, long thought to be cousins of dinosaurs, might actually be ancestors of ...