1.   Dr. Blair Hedges, evolutionary biologist at Pennsylvania State University, is an author of the paper that already has jaws dropping.

2.   Loggerheads have powerful jaws that allow them to crush shellfish.

3.   They are handsome, they have long jaws and they can be adjusted to work on angled surfaces.

4.   They have jaws that snap.

5.   We used to think of Asian models as chiseled and Eurasian-looking, now some have very small eyes, and others have square jaws.

6.   The new insects have jaws with three small teeth and long antennae, the scientists reported.