For years, the the massive mostly-intact dinosaur skeleton that came to be known as Sue the T-rex was at the center of a legal battle.

A new study concludes that 2.5 billion Tyrannosaurus rex prowled North America.

RALEIGH, N.C. – The fossil skeletons of two dinosaurs intertwined in what looks like a final death match have been donated to a North Carolina museum. The nonprofit organization Friends of the North Carolina Museum of Natural Sciences said in a statement Tuesday that it acquired the fossilized animals with private funds. The Tyrannosaurus rex and Triceratops horridus known as the dueling dinosaurs were buried together 67 million years ago. The nonprofit said the distinct preservation will give museum paleontologists an unprecedented opportunity for research and education. In June, a U.S. appeals court ruled the fossils belong to the owners of the land’s surface rights, not the owners of the mineral rights.

Stan, one of the largest and most complete Tyrannosaurus rex fossil discovered, is on display, Tuesday, Sept. 15, 2020, at Christie's in New York. Stan's head on the display is a casting of the original, which is too heavy for the display. The legend of the Tyrannosaurus rex nicknamed Stan is getting fresh life thanks to Christie’s. The auction house put his bones on display starting Wednesday through floor-to-ceiling windows at its midtown Manhattan gallery in advance of putting them up for auction. Researchers also marveled at how the skull had large puncture wounds, speculating that they were the result of T. rex warfare.