Fossil STM 15-36 (IMAGE) Frontiers Caption Fossil STM 15-36, photographed by Xuwei Yin at the Shangdong Tianyu Museum of Natural History. Photograph courtesy of the authors. Credit Xuwei Yin, Shangdong Tianyu Museum of Natural History Usage Restrictions Credit must be given to the creator. License CC BY 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.