
Illustration of two sparring megalodons
Clarence “Shoe” Schumaker, Courtesy of the Calvert Marine Museum
A number of fossil tooth from the large predatory shark Otodus megalodon present scratch marks that might solely have been made by members of their very own species, suggesting that the largest sharks of all time could have fought by sparring with their jaws.
Between 23 and three.6 million years in the past, megalodon, which may have grown up to 24 metres long, swam the world’s oceans. Now, Stephen Godfrey on the Calvert Marine Museum in Maryland and his colleagues have studied 4 tooth from fossil websites in North and…