T. rex (IMAGE) University of California - Berkeley Caption This cast of a Tyrannosaurus rex is on display in UC Berkeley's Valley Life Sciences Building. The original fossil skeleton from Montana's Hell Creek Formation is in the Museum of the Rockies in Bozeman, Mont. Credit Randy Irmis Usage Restrictions None 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.