Illustration of two sparring megalodons
Clarence “Shoe” Schumaker, Courtesy of the Calvert Marine Museum
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 million 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…
