What Western Australian animal would this skull belong to?

The second picture shows that the animal has teeth of different sizes and shapes, which usually indicates that it is a mammal. read more

Some features not mentioned by Jelle that help to identify it as a mammal are the extensively fused skull (lepidosaurs, such as lizards and snakes, have very flexible skulls. read more

The skull was large--larger than a deer--and it is difficult to tell from this picture how big this particular skull is. Ironically, when my son discovered the skull in our creek, the movie Jurassic Park had just come out. read more