The mandible’s primary function is to move the mouth, allowing it to open and close when needed, such as when a person needs to chew food. The mandible is the only bone in the skull that can ...

A broken jaw ... skull at the temporomandibular joints, better known as the TMJs, on either side of your head in front of your ears. Ligaments hold the bone in place, and muscles let your jaw open ...

A remarkably preserved stegosaur skull is reshaping what scientists know about plated dinosaurs and their evolution across ...

This makes fossils of early mammalian jaws essential clues to how this unique jaw set up arose over the course of evolution. “Mammals are defined by what mammals eat with–jaws and teeth ...

The predator likely used its wide, flat head and front teeth to suck in and chomp unsuspecting prey, researchers said. Its skull was about 2 feet (60 centimeters) long. "It's acting like an ...