Wednesday, May 17, 2000 to Monday, February 5, 2018

SUE the T. rex

SUE the T.rex fossil skeleton

Wednesday, May 17, 2000 to Monday, February 5, 2018

Have you heard? SUE, the world-famous Tyrannosaurus rex, is going through some big changes! This fearsome fossil has moved from Stanley Field Hall and we're working behind the scenes to make scientific updates to the skeleton. SUE will be off display until spring 2019 and debut in a brand new gallery as part of our permanent Evolving Planet exhibition.

As the largest, best preserved, and most complete Tyrannosaurus rex ever found, SUE is an invaluable research specimen. More than 90 percent complete, SUE measures 40.5 feet long from snout to tail and 13 feet tall at the hip. SUE’s signature smile, made up of 58 dagger-like teeth, is a popular visitor photo opp (and will remain so in the new gallery!). The skull mounted on SUE’s skeleton is a replica, while the original 600-pound skull has its own case that allows for close-up viewing and study. The fossil skull has been moved from the second-floor balcony and will also return to display in SUE’s new private suite in 2019.

During SUE’s time out of the public eye, our scientists are making important scientific updates to this fearsome fossil, including adding SUE’s gastralia to the rest of the skeleton. These are bones that look like an extra set of ribs and helped T. rex breathe. We’re also updating SUE’s pose according to research that’s come out since SUE was first mounted in 2000—we’ll lower the arms and adjust the positioning of the wishbone.

Throughout this time of exciting changes, share your favorite SUE photos on social media and follow the transformation with #SUEOnTheMove. You can also stay in touch with this sassy T. rex on Twitter, @SUETheTrex.

Learn more about changes to SUE and Stanley Field Hall

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