Gus the T. rex goes under the hammer with a $20–30 million estimate at Sotheby’s

Sotheby’s will auction a 67-million-year-old Tyrannosaurus rex nicknamed Gus for a pre-auction estimate of $20–$30 million, the highest ever for a dinosaur fossil. Discovered in 2021 on a South Dakota cattle ranch by Theropoda Expeditions, the nearly complete skeleton goes on sale July 14, highlighting Sotheby’s ongoing bet on fossil sales as a luxury market. Past high-profile dinosaur auctions include Griffin’s Stegosaurus Apex (sold for $44.6 million) and other T. rexes such as Sue and Stan; bidders are typically private collectors who often loan acquisitions to museums.