Dickinsonia (IMAGE) University of Oxford Caption Dickinsonia, one of the oldest animal fossils from the Ediacara Biota, Ediacaran Rawnsley Quartzite Formation, Australia. 560–550 million years old. Credit: Lidya Tarhan Credit Lidya Tarhan Usage Restrictions The image can be used if credited. 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.