Fossil Friday!

Photograph by Joshua Rosenau

This week on Fossil Friday, I bring you one of the most famous fossils of all time. The jaw should look a little familiar to those who love fossils. But it's not the jaw that made this animal so interesting to paleontologists.

What was this animal? Where was it found? And why is it so important to our understanding of life on Earth?

The first one to identify it correctly wins bragging rights for the rest of the week—and, since it's such a significant fossil, a gold star, too!