Pliosaur Size Sihlouette (IMAGE) University of Bristol Caption This is a silhouette comparing the sizes of a great white shark (top), killer whale, human diver and the pliosaur. Credit School of Earth Sciences, University of Bristol Usage Restrictions For single use only to illustrate University of Bristol press release 'Ancient sea reptile with gammy jaw suggests dinosaurs got arthritis too' published May 16, 2012. Image must not be archived. 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.