We mostly discover these extinct sharks through their teeth, which they grew in large numbers throughout their lives and which hold up better to time than the cartilage throughout the rest of ...

They ate sharks and were even cannibalistic. Experts believe Dunkleosteus may have been ... Every five-year-old’s favourite dinosaur, and our pick for the world's scariest extinct creature, the T-rex ...

Scientists have long debated the true size of the megalodon (Otodus megalodon), which went extinct about six million years ago. The debate remains unresolved in part due to sharks lacking bones ...