PHOENIX — Just when you thought it was safe to go back to northern Arizona comes word that sharks used to roam around Flagstaff. It was a long, long time ago. “[About] 260 million years ago, there was ...

Learn how whale fossils and embedded shark teeth reveal feeding behavior and scavenging in the Early Pliocene North Sea ecosystem.

Editor’s note: Every year, hundreds of undergraduates at the University of Delaware pursue research under the guidance of a faculty mentor. Such experiences provided by UD — a nationally recognized ...

For a shark that vanishes almost as quickly as it appears, the great white has left behind a surprisingly messy family ...

A rendering of Clavusodens mcginnisi, or “McGinnis’ nail tooth,” an ancient shark that stalked the ocean floor 340 million years ago. Rendering courtesy of the National Park Service A shark no larger ...

A new study analyzing two fossilized whale skulls from around 5 million years ago has revealed fragments of sharks' teeth lodged inside them. This provides rare evidence of how sharks fed on whales in ...

STANFORD, Calif. (KGO) -- If you ever come face-to-face with the wrong kind of shark, there's something you probably want to avoid. Just a hint: they're long and really sharp. But now, researchers at ...

A tiny shark species dating back hundreds of millions of years has been identified at Mammoth Cave National Park in Kentucky, the National Park Service announced Monday. The identification was made ...

Bull sharks (Carcharhinus Leucas) are one of the ocean’s most fearsome creatures. Although some animals may prey on bull sharks, such as crocodiles, killer whales, and the occasional great white shark ...