A T. rex fossil is sold at auction for about $50.1 million, making it the most expensive dinosaur fossil ever auctioned, according to multiple reports. The sale reestablishes the T. rex at the top of the fossil market after a stegosaurus had previously held the record. CNBC reports the winning price is roughly $50 million and notes that the T. rex sale surpasses a stegosaurus skeleton that billionaire hedge fund investor Ken Griffin bought for $44.6 million in 2024. The New York Times also describes a period in which the T. rex had been displaced by the stegosaurus, but the new auction result puts the T. rex back in first place. The reports frame the transaction as part of a broader rise in high-end dinosaur fossil pricing, with major private collectors and auction houses driving record-setting bids. Both outlets treat the key development as the price achieved and the resulting change in the ranking of top-selling dinosaur fossils.