Which famous dinosaur is known from the most complete skeleton ever found, nicknamed 'Sue'?

The dinosaur known from the exceptionally complete skeleton nicknamed “Sue” was Tyrannosaurus rex. Sue is officially catalogued as FMNH PR 2081 and is one of the largest, most complete, and best-preserved T. rex specimens ever discovered.

American fossil hunter Sue Hendrickson discovered the skeleton on August 12, 1990, in South Dakota’s Hell Creek Formation. More than 90 percent of the skeleton was recovered by bulk, including a remarkably complete skull. The specimen was named Sue in honor of its discoverer, rather than as an indication of the dinosaur’s sex.

Sue later became the center of a legal ownership dispute and was sold at auction in 1997 for $8.3 million. Chicago’s Field Museum acquired the fossil, prepared it, and placed the mounted skeleton on display in 2000. A common mistake is to treat “Sue” as a separate dinosaur species: it is an individual fossil specimen of Tyrannosaurus rex.