Sharks have been losing teeth for 400 million years. Here’s a guide to uncovering some of these plentiful fossils across the ...

True leaders bring people together to make the world a little better, says the Kind Snacks founder, and to do that you need ...

When you think about sharks, the first thing that might come to mind are huge jaws filled with rows of deadly-looking teeth. But shark teeth come in many shapes and sizes. They can tell us how these ...

callout: A single shark may run through upwards of 50,000 teeth in its lifetime. The shark pictured here is a composite. Moreover, it's a male composite. Finally, we only touch on some of the ...

by working backward and comparing the size of the teeth to modern shark species, the researchers were able to paint a picture of what the full-sized adult sharks would have looked like.

It may have been comparable in length to today's biggest whale sharks, the largest of which has measured in at 18.8 metres. Without a complete megalodon skeleton to measure, these figures are based on ...

Just in time for summer, the megalodon—the ancient, city bus-sized shark known as the “Megatooth”—has reared its ravenous snout. While the oceans are now safe from the Megatooth, which went extinct an ...

This was a discovery they could really sink their teeth into. A rare smalltooth sawfish, considered a “prehistoric” shark relative with an eye-popping 32 teeth affixed to its exterior ...

Truwit, 24, lost part of her left leg in a shark attack on May 24, 2023, while snorkeling in the Turks and Caicos Islands. Barely more than a year later, she won two silver medals over a 48-hour ...

Records drawn on cave walls show prehistoric people shaving with clamshells, flint knives, and even shark teeth. It's not clear when these crude implements gave way to what we now think of as razors.

Greenland sharks have narrow, pointed upper teeth and broader, squared teeth on the lower jaw. Holding large prey in position with their upper teeth, they roll their head in a circular motion ...

They both have unique skin that is covered in tiny modified teeth. These teeth reduce drag and make the shark swim faster. All sharks and rays have teeth – even the ones that eat plankton!