Tyrannosaur bBne (IMAGE) Geological Society of America Caption This is a recently unearthed tyrannosaur bone with peculiar teeth marks that strongly suggest it was gnawed by another tyrannosaur. Credit Photos by Matthew McLain. Usage Restrictions Photos by Matthew McLain 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.