(Close-up of a shark with sharp teeth. Credit: GIOVANNI NITTI / Shutterstock.) Shark teeth are a marvel of evolution. They are so sharp that many island cultures once used them as weapons and tools to ...

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

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

A broken tooth lodged deep in bone can outlast the animal that lost it. In two whale skulls from Belgium, those fragments ...

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 ...

Maryland leaders are considering a bill that would make the extinct megalodon the official state shark.

A new study analyzing two fossilized whale skulls from around 5 million years ago has revealed fragments of sharks' teeth ...

MAMMOTH CAVE, Ky. — A new-to-science species of ancient shark was recently discovered in Mammoth Cave National Park in Kentucky. The small shark named Clavusodens mcginnisi, or “McGinnis’ nail tooth,” ...

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 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 ...

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

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