Sue (fossil T. rex)

Sue is one of the most complete and well-preserved Tyrannosaurus rex fossils ever discovered, found in 1990 in South Dakota. Named after Sue Hendrickson, who discovered it, this fossil provides valuable insights into T. rex’s anatomy, behavior, and ecology. Estimated to be around 28 years old at death, Sue is approximately 40 feet long and weighed about 9 tons. Its remarkably intact bones help scientists study the predator’s physical features, muscle attachments, and growth patterns, making Sue a critical resource for understanding this iconic dinosaur’s biology and the Late Cretaceous period. It is now displayed at the Field Museum in Chicago.