Dr Humberto Ferrón, a postdoctoral researcher and co-author of the study, said: “Our results might seem to be at odds with traditional functional interpretations of the dentitions of these group of giant sharks.
“We think that other biological processes might be responsible for the evolutionary change in their dentitions.
“For example, modifications in tooth shape that occurred from the older, smaller species to that of the more recent, larger forms like megalodon are very similar to those observed along the growth of megalodon.
“That is, juvenile megalodon individuals have teeth that resemble those of older megatooth sharks.
“Thus, instead of feeding specialisation, we think that the acquisition of its gigantic body size was responsible for the evolution of the peculiar teeth of megalodon.”