Dr Isaac Kerr (IMAGE) Flinders University Caption Palaeontologist Dr Isaac Kerr displays the fossil jaw of the giant kangaroo Protemnodon viator and the far smaller jaw of the largest living kangaroo, the red kangaroo. Credit Flinders University Usage Restrictions Flinders University License Original content Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any information through the EurekAlert system.