Although T. rex is a household name, what we know about this tyrannosaur is constantly evolving. Improved technologies, such as biomechanical modeling and x-ray imaging, have allowed scientists to ...

"However, on day one of the excavation, Jessin and I uncovered the lower jaw with several big T. rex teeth sticking out of it," Lyson said. "It still gives me goosebumps," Lyson added. "I was ...