Giant megalodon sharks may have sparred with their jaws todayheadline

Several fossil teeth from the giant predatory shark Otodus megalodon show scratch marks that could only have been made by members of their own species, suggesting that the largest sharks of all time may have fought by sparring with their jaws.

Between 23 and 3.6 million years ago, megalodon, which may have grown up to 24 metres long, swam the world’s oceans. Now, Stephen Godfrey at the Calvert Marine Museum in Maryland and his colleagues have studied four teeth from fossil sites in North and…