Fossils 1.8 Billion Years Old (IMAGE) University of California - Los Angeles Caption This is a section of a 1.8 billion-year-old fossil-bearing rock. Credit UCLA Center for the Study of Evolution and the Origin of Life 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.