Sue T. Rex is the largest, most complete Tyrannosaurus Rex skeleton to date. Its discovery and excavation by the Black Hills Institute is described in these pages. Sue now resides at the Field Museum in Chicago. What's unique about Sue is that there was a contentious legal case over who had rights to the skeleton. Details of the case are also presented here. Sue was seized from the institute by the federal government and after lengthy court proceedings, she was eventually auctioned off at Sotheby's.