Dinosaur footprints in Brazil (IMAGE) Southern Methodist University Caption A long ornithopod trackway at Passagem das Pedra, Sousa Basin preserved in floodplain deposits of Lower Cretaceous. Credit Ismar de Souza Carvalho Usage Restrictions None 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.