Fossil teeth also help us to understand shark evolution. For example, we know that the extinct giant mako shark, Isurus hastalis, is the ancestor of today’s great white shark. The fossil record ...

"It was larger than a great white, but the teeth are more like a mako shark's teeth. Makos feed on things like large fish and squid, occasionally sharks and marine mammals. It probably had a ...

A tooth’s isotopic composition can reveal details ... The megalodon, great white shark and mako shark are not the only warm-blooded marine animals. Others include aquatic mammals such as whales ...

showing off its triangular teeth. Dr. Mahmood Shivji, a marine scientist at Nova Southeastern University, said something is off with this shark. “If it is a mako, this would be very unusual ...