A Tyrannosaurus Rex skeleton surely is worth a lot, but the ancient specimen initially expected to fetch between $6-8 million as part of Christie’s Evening Sale of 20th Century Art, surprised everyone by breaking the previous world auction record, having been sold for a whopping $31,847,500 to an anonymous buyer.

The T-Rex named “Stan,” after amateur paleontologist Stan Sacrison who discovered him in 1987, at Hell Creek Formation — located between South Dakota, Wyoming, and Montana is described as “one of the best specimens ever discovered,” as per James Hyslop, Head of Christie’s Science & Natural History department. The awe-inspiring skeleton measures 13 feet in height and 40 feet in width and is comprised of 188 original bones, a true rarity among archaeological excavations, as it is one of the few completely assembled skeletons of its kind.

The previously held world auction record was by dinosaur “Sue,” named after her discoverer Sue Hendrickson, who was auctioned in October 1997, for $8.3 million, the second-highest amount ever paid for a dinosaur fossil, and is now a permanent feature at the Field Museum of Natural History in Chicago, Illinois.