Reconstruction (IMAGE) University of Bristol Caption A reconstruction of Psittacosaurus illustrating how the cloacal vent may have been used for signalling during courtship. Credit 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.