Insect-damaged leaf fossil (IMAGE) University of Wyoming Caption This fossil leaf from Wyoming’s Hanna Basin, about 54 million years old, shows damage by insects. Credit Lauren Azevedo-Schmidt Usage Restrictions None 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.