You might know the Cretaceous Period for big animals such as Tyrannosaurus rex and Triceratops, or for being the end of the age of dinosaurs. But what was the world like in the millions of years ...

Map showing the location of duckbill dinosaurs during the Late Cretaceous period. Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert!

During this period, oceans formed as land shifted and broke out of one big supercontinent into smaller ones. 3 min read Continents were on the move in the Cretaceous, busy remodeling the shape and ...

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

ULAANBAATAR: A previously unknown species of ancient mammal that lived alongside dinosaurs during the Cretaceous period, about 90 million years ago, has been recorded for the first time in Mongolia.