Insect Damage Holes in Fossil Leaf (IMAGE) U.S. National Science Foundation Caption During the Paleocene-Eocene Thermal Maximum more than 55 million years ago, insects chewed large holes in this leaf. Credit Credit: Photo by Amy Morey Usage Restrictions Reporters must credit Amy Morey. Additional use restricted; contact Amy Morey for permission to use image for reasons other than news coverage. 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.