New Princeton research shows that prehistoric megatooth sharks—the biggest sharks that ever lived—were apex predators at the highest level ever measured.
Megatooth sharks get their name from their massive teeth, which can each be bigger than a human hand. The group includes Megalodon, the largest shark that ever lived, as well as several related species.
While sharks of one kind or another have existed since long before the dinosaurs—for more than 400 million years—these megatooth sharks evolved after the dinosaurs went extinct and ruled the seas until just 3 million years ago.
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