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 ...

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 ...

S ixty-six million years ago, at the end of the Cretaceous Period, an asteroid impact near the Yucatán Peninsula of Mexico triggered the extinction of all known non-bird dinosaurs. But for the ...

The end of the Cretaceous Period, 66 million years ago, marked the dramatic extinction of the dinosaurs. Until now, our understanding of this mass extinction has been largely shaped by fossils ...