A “ serrated blade” found sticking from a rock in the United Kingdom has been identified as a “nearly perfect” prehistoric ...

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 ...

It belonged to a Squalicorax falcatus shark, which prowled the ocean 90 to 100 million years ago, according to Wight Coast Fossils on the Isle of Wight. That’s tens of millions of years older th ...