T-Rex skeleton 'Gus' sells for $50.1 million at Sotheby's, smashing fossil auction record

The auction room

Seven bidders fought for roughly ten minutes over one of the largest and most complete Tyrannosaurus rex skeletons ever discovered. The opening internet bid came in at $20 million, after which the battle moved entirely to telephone lines. Sotheby's auctioneer Phyllis Kao, who also handled the 2024 record Stegosaurus sale, presided over the room. When bidding stalled at $34 million, Kao urged the room on: the last four bidders were all on the phone. The hammer eventually fell at $50.1 million, a figure that includes the auction house's commission of roughly $7 million. The hammer price alone was $43 million. The identity of the winning bidder has not been disclosed.

This is a once-in-a-lifetime opportunity. You won't find a second Gus.

Where Gus came from

Gus was excavated from a cattle ranch in Harding County, South Dakota. A commercial firm led the multi-year dig. The skeleton is named after Gary 'Gus' Licking, the landowner on whose property it was found. Licking died before the excavation was completed. Under US law, fossils discovered on private land belong to the landowner, making the sale entirely legal. The proceeds are expected to be split between the excavation company and the Licking family, though Sotheby's has not confirmed the arrangement.

The specimen

Standing 3.8 metres tall and nearly 12 metres long, Gus contains 183 original bones. Sotheby's states the skeleton is 61 percent complete by bone count and roughly 80 percent complete by bone mass. By comparison, the famous T-Rex 'Stan' was about 65 percent complete by bone count. The well-preserved skull bears bite marks from fights with other members of its species. The dinosaur lived approximately 67 million years ago during the Late Cretaceous.

The Tyrannosaurus Rex is the most iconic prehistoric species in the fossil record, and Gus is undoubtedly among the most significant specimens ever found.

A booming and controversial market

Dinosaur fossils have attracted growing interest from wealthy investors seeking assets that combine passion with the prospect of value appreciation. The previous record was held by a Stegosaurus named 'Apex', which sold for $44.6 million at Sotheby's in 2024. Gus has now pushed the ceiling higher by roughly $5.5 million. The sale renews a long-running tension between the commercial fossil market and the scientific community.

Prices have completely spiralled out of control. No museum can afford this. It would be desirable for natural history museums to have acquisition budgets comparable to art museums.

Scientific criticism

Many researchers oppose private ownership of scientifically valuable fossils. The core objection is access: even cooperative owners who lend specimens to museums for exhibition and study do not guarantee the permanent, unrestricted access that peer review and reproducibility demand. Scientists argue that when a fossil enters a private collection, the public loses a piece of its natural heritage and researchers lose a potentially irreplaceable data point. The anonymous buyer now controls whether Gus will ever again be seen by the public or studied by palaeontologists.