The dinosaur was discovered on a University of Washington dig in Montana. The fossil is nicknamed the "Tufts-Love" Tyrannosaurus rex after the two volunteers who found the fossil, Jason Love and Luke Tufts. They were volunteering on the project, which is excavating the fossil-rich Hell Creek Formation. It is one of the largest and most complete T. rex specimens found to date, and the skull is one of only 15 T. rex skulls in the world in this kind of good condition.