A Tyrannosaurus rex fossil named “Gus” was sold at Sotheby’s auction for $50.1 million, marking it the most expensive dinosaur fossil ever auctioned. The sale significantly surpassed its estimated price range of $20 million to $30 million following a competitive 10-minute bidding session involving seven bidders. This record-breaking price also eclipsed the previous high set by a Stegosaurus skeleton known as “Apex,” which was purchased for $44.6 million by billionaire hedge funder Ken Griffin in 2024.

Gus, discovered on private land in South Dakota, is roughly 67 million years old and is one of the most complete T. rex specimens ever found. The fossil comprises 183 bone elements, accounting for about 61% of the skeleton by bone count. Measuring approximately 38 feet long and 12.5 feet tall, with a skull length of 54 inches, Gus is among the largest T. rex fossils uncovered. The specimen also shows signs of past injuries, including healed fractured ribs and bite marks on several skull bones.

Sotheby’s Vice Chairman and worldwide head of science and natural history, Cassandra Hatton, praised the specimen for its exceptional quality and the meticulous care taken during its excavation, documentation, and preparation. The sale highlights the growing interest and investment in dinosaur fossils, which have become a rapidly expanding segment of the collectibles market. Wealthy collectors and auction houses are increasingly looking beyond traditional art categories to diversify their portfolios.

While the market for dinosaur fossils is booming, experts like paleontologists caution about the lack of stringent safeguards regarding authenticity and verification within the industry. The high-profile auction of Gus follows other notable fossil sales, such as the 2020 Christie’s sale of a T. rex named “Stan” for $31.8 million, signaling sustained demand for rare prehistoric artifacts among affluent buyers.