The Fossil (image) University of Bonn Caption The Fossil: thanks to the fine-grained mudstone, the details of the two centimeter long parasite Qiyia jurassica are exceptionally preserved. Credit Photo: Bo Wang, Nanjing Usage Restrictions This photo may be used with the press release. 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.