Scientists discover giant prehistoric shark with ‘grinding’ teeth that crushed turtle shells

The sharks are believed to have eaten large ammonites and sea turtles (Picture: F. Spindler)The great white shark has an ancestor with teeth so sharp, it could chew through a turtle’s shell.
Researchers have finally uncovered the prehistoric shark after years of odd clues suggesting there was something more terrifying lurking in our seas millions of years ago.Now, in a quarry in Mexico, scientists reveal exactly what the sharks looked like – right down to the shape of their teeth.
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