On This Day In History On This Day In History: ‘Sue’ Largest Tyrannosaurus Rex Skeleton Discovered In South Dakota – On August 12, 1990 MessageToEagle.com | August 12, 2016 MessageToEagle.com – On August 12, 1990, the largest and best-preserved Tyrannosaurus Rex skeleton to date was discovered and nicknamed “Sue”. The discoverer was the paleontologist Susan “Sue” Hendrickson. Read More