Rare fossil1 (IMAGE) Canadian Museum of Nature Caption Fossil showing the entangled skeletons of Psittacosaurus (dinosaur) and Repenomamus (mammal) and their interaction just before death. NOTE: The scale bar equals 10 cm. Credit Gang Han Usage Restrictions For use with articles related to this journal paper. 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.