Fossil teeth of extinct megalodon sharks have grooves made by other megalodon teeth, hinting at violent encounters between ...

It's hard to resist a puppy's adorable face, but don't be fooled — they're willing to be a little rough around the edges if ...

Sharks have ruled the Earth’s oceans for 400 million years and recent research on fossilized shark teeth has led to the ...

Remarkably, fossil shark teeth are also incredibly abundant. Sharks ruled the earth's oceans for 400 million years, and every individual grows and sheds thousands of teeth in their lifetime.

Our study was one of the first to date Florida coastal deposits using fossil shark teeth and a technique that looks at variations in ocean strontium. Strontium is a chemical element that occurs ...