Ancient Reptiles Illustration (IMAGE) University of Bristol Caption Ancient reptiles conquer continental interiors. Credit © James Robins Usage Restrictions Please note, these images are for single use only to illustrate stories about Dr Howard Falcon-Lang's paper on tetrapod trackways (published in Paleo-3, Friday 30 July 2010) and are not to be archived. Please credit the copyright owner. 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.