Our study shows that fossil shark teeth are more resistant to these types of changes due to their outer enamel-like surface.

Shark sex is a bitey business, with males grasping females with their teeth during the act. The resulting wounds are helping scientists to figure out when and where sharks are doing the deed.

Numerous shark species are capable of inflicting mortal ... Ranging from 15 to 20 feet in length and equipped with rows of razor-sharp teeth, they are apex predators capable of inflicting serious ...

Shark tooth fossils in sandstone matrix ... insights for identifying patterns in shark populations, such as which species coexisted, their feeding behaviors, and how these changed over time.