When Danish naturalist Nicholas Steno dissected a great white shark’s head in 1666, he realized that tongue stones were in fact prehistoric shark teeth that belonged to something much bigger.

Great white sharks have this combination of teeth. These apex predators eat sea lions, dolphins and even other sharks. Long, sharp teeth are excellent at gripping small or medium-sized fish and squid.

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 ...

Sharks were an important part of their diets, and after a successful hunt, the fishers would butcher bull sharks, great white ... teeth from at least eight different species—and shark teeth ...

But was this apex predator simply a beefed-up great white shark, and is it still lurking ... These jaws were lined with 276 teeth, and studies reconstructing the shark's bite force suggest that it may ...

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.