Sue (dinosaur)

SUE, Tyrannosaurus rex, in her own suite in the Griffin Halls of Evolving Planet at the Field Museum in Chicago. This is real fossil bone: 250 of the roughly 380 bones in a T. rex, and about 90 percent of the skeleton by volume, which makes SUE the most complete adult T. rex yet found. One part is a copy. The real skull weighs about 600 pounds, too heavy for the mount to carry, so the head on the skeleton is a lighter cast and the original is displayed separately in its own case.