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 ...

Every once in a while, he finds a keeper. “This is a crab from the Cretaceous period and if you look closely at the dark pieces, that’s probably the shell.” Because of Alabama’s soil ...

For most researchers, North America is their hotspot for exploring dinosaur fossils from the Cretaceous period, Newsweek ...

They began changing the way the world looked almost as soon as they appeared on Earth about 130 million years ago, during the Cretaceous period. That's relatively recent in geologic time ...