There are at least eight different species of hammerhead shark, and while fossil teeth evidence suggests that their ancestors may have existed 45 million years ago, molecular data points to a much ...

The university museum’s collection from Rio do Meio includes teeth from at least eight different species—and shark teeth are a treasure chest of information. In a recent paper, Burg Mayer and ...

We now know that this is not the case, and megalodon is actually from a different lineage of shark of which megalodon was the last member ... megalodon was adapted to warm tropical and subtropical ...