Sahul Extinction (VIDEO) Vanderbilt University This video is under embargo. Please login to access this video. Caption Changes in the diets of the super-sized megafauna that ruled Australia during the last Ice Age indicate that climate change was a major factor in their extinction. Credit Zachary Eagles, Vanderbilt University 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.