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 ...

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 ...

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 ...

(CN) — During an extensive search for new fossil species, Jun Ebersole found one in an old box. “A few years ago, I was looking through the historical fossil collections at the Geological Survey in ...

Before we start talking about tiger shark teeth, get to know the shark that these teeth come from. Tiger sharks, like many other shark species (but not all of them), are solitary creatures. They tend ...

Shark teeth found in 5-million-year-old whale skulls provide direct evidence of ancient feeding behavior and predator-prey ...

Add Yahoo as a preferred source to see more of our stories on Google. Fossils of an ancient shark species have been discovered in a Kentucky cave, officials announced during Shark Week. The Discovery ...

A shark's teeth give it the power to rule the seas, yet these ferocious chompers aren't built to last in acidic water. As oceans grow more acidic due to climate change, sharks may be left with ...

Great white sharks have a reputation for being some of the most ferocious animals in the ocean, owing in part to their mouth full of sharp, serrated teeth. Most people believe that they are born as ...

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 ...

The animal kingdom is no stranger to astonishing abilities, including the remarkable power to regenerate lost or damaged body ...