 My research focuses on a 400 million years old ancient jaw fish. We're looking for the evolution of jaws and teeth among that specimen. Acid-etched fossils from Burajuk are so fragile you have to be extremely careful handling them. With these new techniques we can scan them on the CT scanner, we can make 3D printouts and actually work out how the jaws function. By looking at the internal structure like tooth histology we'll be able to understand the structure much better than other fossil specimens because we've got the whole tooth preserved and also the cartilage part as well. This is an amazing specimen. It shows the jaw structure from 400 million years ago which is completely different from the jaw structure of any living fish or indeed any living mammal. We get the chance to see the inside of these fragile fossils. These new developments at the ANU are enabling us to come up with all sorts of new stories about jaw function in an extinct animal.