A “serrated blade” found sticking from a rock in the United Kingdom has been identified as a “nearly perfect” prehistoric shark tooth, experts say. It belonged to a Squalicorax falcatus ...

Its serrated teeth were handy for slashing through ... he realized that tongue stones were in fact prehistoric shark teeth that belonged to something much bigger. An illustration from Steno ...

One of the reasons sharks have been so successful is that they have exploited different ecosystems and eaten different types of foods. And because they’re eating different foods, they need different ...

The ratios of strontium isotopes in fossil shark teeth can be used to better understand how coastal environments evolved in ...

Emma explains, 'With its large serrated teeth megalodon would have eaten meat - most likely whales and large fish, and probably other sharks. If you are that big you need to eat a lot of food, so ...

The phenomenon calls to mind the critters that continuously regrow their chompers — for example, sandbar sharks, which sprout tens of thousands of serrated teeth over time; and rabbits ...

A "serrated blade" found sticking from a rock in the United Kingdom has been identified as a "nearly perfect" prehistoric shark tooth, experts say. It belonged to a Squalicorax falcatus shark ...

A “serrated blade” found sticking from a rock on Isle of Wight in the UK has been identified as a shark tooth that could be 100 million years old, experts say. Wight Coast Fossils photo A ...