Palaeontologist Isaac Kerr (IMAGE) Flinders University Caption Flinders University palaeontology researcher Isaac Kerr with an Australian kangaroo jaw bone, and an Australian megafauna fossil jaw used in the latest Royal Society study. Credit Flinders University Usage Restrictions please credit 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.