The remaining leg bone showed a clean cut that healed over, Maloney said.

马洛尼称，剩下的腿骨显示出一个已经愈合的干净伤口。

And the fossilized bones of ancient cetaceans do indeed show evidence of megalodon bite marks— including some that healed over, confirming that megalodons pursued live prey.

古代鲸目动物的骨骼化石确实显示了巨齿鲨咬痕的证据， 其中一些已经愈合，这证实了巨齿鲨追逐活的猎物。