Miyashita and Gess (IMAGE) University of Chicago Medical Center Caption Tetsuto Miyashita (right) stands with researcher Rob Gess in 2016 atop the shale locality in Makhanda, South Africa that has yielded fossils of the 360 million-year-old Priscomyzon lamprey. Credit Tetsuto Miyashita Usage Restrictions May only be used for this story unless additional permission is granted 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.