Illustration (IMAGE) Field Museum Caption An illustration showing two T. rex fighting: a potential source of the injuries to SUE's jaw. This hypothesis is favored by Bruce Rothschild but deemed unlikely by Jingmai O'Connor. Credit GE Creech Usage Restrictions Please include credit 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.