https://gizmodo.com/gigantic-t-rex-skeleton-found-in-canada-is-officially-1833547406
New research published last week in The Anatomical Record describes “Scotty,” a T. rex skeleton otherwise known as specimen RSM P2523.8. Scotty is now officially the largest and most aged T. rex ever discovered, and the most gigantic of any of the known two-legged carnivorous dinosaurs known as theropods. At an estimated 19,555 pounds (8,870 kg), it’s also the biggest dinosaur ever discovered in Canada.
Persons and his colleagues compared Scotty’s skeleton to 11 other well-preserved T. rex skeletons, including Sue—a specimen otherwise known as FMNH PR 2081. Sue’s bones were found in 1990, and it was once considered the biggest T. rex skeleton, a title that now belongs to Scotty. Sue weighed in at 18,651 pounds (8,460 kg), which is around 5 percent lighter than Scotty.