Skull of Kambara.
Image: Jon Augier
Source: Museum Victoria
Skull of Kambara.
Image: Jon Augier
Source: Museum Victoria
This skull is approximately 30 cm long.
Crocodiles and their relatives (called crocodylomorphs) have a long fossil history going back to the Triassic, evolving around the same time as the first dinosaurs.
This fossilised skull is not as old as the first crocodiles, but it is still around 40 million years old. The fossil is from a crocodile genus called Kambara, a uniquely Australian group of crocodiles that are now extinct. The crocodiles living in Australia today originated from a different group that reached our shores from Asia millions of years after Kambara went extinct.