Scientists have explored how changes in sea surface temperatures during the Cretaceous influenced the diversification and ...

At that point, during the Cretaceous period, sharks were bottom dwellers, living in the depths of the ocean. But a massive outpouring of volcanic lava sent carbon dioxide levels soaring, ...

Exquisitely preserved fossils of a shark that thrived during the Cretaceous period appear to solve a long-standing mystery around how it hunted and where it fits into the shark evolutionary tree.

At the beginning of the Cretaceous Period (145 million to 66 million years ago) sharks were once again widely common and varied in the ancient seas, before experiencing their fifth mass extinction ...

"You never know unless you look," said Jayson Kowinsky, a high school physics teacher from Pittsburgh who, while sifting ...

Long before the carnage began, the Cretaceous picked up where the Jurassic ... snakelike mosasaurs. Rays and modern sharks became common. Sea urchins and sea stars (starfish) thrived; coral ...

Incredibly well preserved dinosaurs at China fossil site were thought to have been buried in huge volcanic eruptions, similar to the Mount Vesuvius that covered the city of Pompeii 2,000 years ago.

Cretoxyrhina was one of the largest sharks and a formidable predator in the Late Cretaceous seas. Nicknamed the Ginsu shark after the kitchen knife that slices and dices, Cretoxyrhina ripped apart ...

Crocodilian ancestors known as thallatosuchians roamed the middle Jurassic and early Cretaceous eras (roughly 191-113 million years ago) and comprised two primary groups, teleosauridae and ...

The University of Colorado team behind the discovery has been digging just outside of Rangely, Colorado for 15 years and ...

Newly discovered birds from Late Cretaceous North America were hawk-sized and had powerful raptor-like feet, according to a new study. Newly discovered birds from Late Cretaceous North America ...

The merest hint of Atlantis' former glory is now left as the gemlike Seychelles islands, the Atlanteans replaced by corals, sharks ... dinosaurs at the end of the Cretaceous Period about 65 ...