The 66-million-year-old creature, dubbed the "Nation's T. rex," is still the centerpiece of a revamped fossil hall, coming to the National Museum of Natural History in June.

HELL CREEK FORMATION , MT - MAY 23: Ranchers Kathy and Tom Wankel return to the site where they discovered a T-Rex skeleton on a small island in the Fort Peck Reservoir with Pat Leiggi, Director of Paleontology at the Museum of the Rockies, who lead the Wankel T. rex dinosaur excavation. The Wankel T-Rex is the centerpiece of the newly renovated Fossil Hall at the National Museum of Natural History. (Photo by Jonathan Newton / The Washington Post via Getty Images)