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 ...

Add Yahoo as a preferred source to see more of our stories on Google. MAMMOTH CAVE, Ky. (FOX 56) — A new species of ancient shark was recently discovered at Mammoth Cave National Park. Fossilized ...

Photographs (left) showing the extinct right whale partial skull with shark bite marks highlighted in red. The more complete ...

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 routine dive off the coast of Manasota Key has turned into something far more unusual. What began as a guided ...

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 ...

Some sharks are defined by more than just their size—their teeth are what truly set them apart. From razor-sharp rows built ...

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 ...

What kind of creatures were kicking about in the oceans 340 million years ago? We’ve now got a slightly clearer picture ...

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

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 ...