Thylacine Skull Stress (IMAGE) Wiley Caption Digital stress tests reveal weakness (red/white areas in right-hand image) in the thylacine jaw. Credit Marie Attard Usage Restrictions None License Licensed 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.