Originally posted by the Voice of America. Voice of America content is produced by the Voice of America, a United States federal government-sponsored entity, and is in the public domain. Christie's to Put Tyrannosaurus Rex Skeleton Up for Auction VOA News The British auction house Christie's announced this week that it would sell the largest and most complete known skeleton of a Tyrannosaurus rex in early October. The auction house said the dinosaur skeleton is nearly 12 meters long and just under 5 meters tall. It has been known as Stan, named after amateur paleontologist Stan Sacrison, who discovered it in the upper Midwestern U.S. state of South Dakota in 1987. Christie's science and natural history specialist James Hyslop said scientists that looked at the bones initially misidentified them as belonging to a triceratops, a more common dinosaur discovery. It was not until Sacrison took the remains to the Black Hills Institute of Geological Research in 1992 that anyone realized what he had found. .