A Gorgosaurus skeleton sold for $6,095,600 at Sotheby’s Natural History sale in New York on July 28. It had been excavated on private land at Judith River, Choteau River, Montana in 2018. The exhibition mounted skeleton measures nine feet, two and a half inches tall and just under 22 feet long. It is from the late Cretaceous Period and approximately 77 million years old. The Gorgosaurus was a relative of the Tyrannosaurus Rex.