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 ...

Scientists have discovered levels of iridium 30 times greater than average in the Cretaceous/Tertiary (KT) boundary, the layer of sedimentary rock laid down at the time of the dinosaur extinction.

About 80 million years ago, during the Cretaceous period, crocodilians appeared ... ancient animals were survivors of the Cretaceous-Tertiary extinction, though no one knows why they lived ...

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 ...