Psittacosaurus specimen (IMAGE) University of Bristol Caption Psittacosaurus specimen from Senckenberg museum of Natural History, preserving skin and pigmentation patterns and the first, and only known, cloacal vent. Credit Jakob Vinther, University of Bristol and Bob Nicholls/Paleocreations.com 2020 Usage Restrictions Single use only with press release 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.