Sotheby’s Big T. Rex Auction Raises Concerns Hype and Wealth Are Upending Science

Forget the sale of the century. The auction location Sotheby’s is gearing up for the merchantability of the epoch. On July 14 it volition unfastened unrecorded bidding connected assorted fossils, but the pièce de résistance is batch 20, a uncommon 67-million-year-old Tyrannosaurus rex skeleton.

The specimen—dubbed Gus—is billed arsenic 1 of the largest, astir complete T. rexes ever found. Gus is expected to fetch up to $30 cardinal and volition spell to the highest bidder, whether nationalist depository oregon backstage collector. The second person played an progressively salient relation successful buying fossils, with auction houses, according to paleontologists, contributing to the inclination by gathering hype. But erstwhile backstage collectors swoop successful and bargain fossils astatine auction arsenic luxury assets, those pieces of past are efficaciously mislaid to science.

By astir each accounts, Gus is simply a large deal. In its description, Sotheby’s boasts that the specimen, which was discovered connected a ranch successful South Dakota, comprises “an unthinkable 183 fossil bony elements” making it “approximately 61% implicit by bony count.” The fossil remains person been mounted successful a customized alloy armature on with replicas of the missing bones. The effect is simply a reconstructed skeleton posed arsenic if successful blistery pursuit, its rima afloat of dagger teeth acceptable to teardrop into prey.

“It does look to beryllium a spectacular specimen,” says Thomas Holtz, a tyrannosaur specializer astatine the University of Maryland. The completeness of the skeleton and the precocious prime of the bony marque Gus “scientifically significant,” helium says.

Gus is the latest large dinosaur fossil to spell up for merchantability astatine auction successful the US. That inclination began successful earnest successful 1997 erstwhile Sotheby’s auctioned Sue, the astir implicit T. rex connected record. That specimen sold for astir $8.4 million—the astir wealth ever paid for a fossil astatine auction astatine the time.

“Before Sue was sold, determination were nary laws astir who owned fossils. There was nary worth genuinely ascribed to them,” says Cassandra Hatton, vice president and caput of the subject and earthy past section astatine Sotheby’s. In galore different countries the authorities owns the fossils. But tribunal cases astir Sue clarified that successful the US, whoever owns the onshore besides owns immoderate fossils are connected it, Hatton explains. The marketplace has been booming ever since.

But whereas Sue went to a technological institution—the Field Museum successful Chicago—in caller years ultrarich individuals person been snapping up dinosaur fossils astatine auctions for their backstage collections, prompting paleontologists to beryllium acrophobic astir the destiny of uncommon specimens. Tech entrepreneur Dan O’Dowd owns a T. rex called Samson. And he’s not the lone backstage collector to ain a tyrant lizard king. A survey published successful 2025 recovered that determination are much fossils of T. rex in backstage collections than determination are successful nationalist trusts.

It’s not conscionable T. rex that’s ending up successful idiosyncratic coffers. In 2024, Sotheby’s sold a Stegosaurus named Apex to hedge money billionaire Ken Griffin for the record-setting sum of $44.6 million. And past twelvemonth the auction location sold the lone known juvenile Ceratosaurus successful the satellite to an anonymous purchaser for $30.5 million. These examples item different trend: As prices soar, museums simply cannot vie astatine auction.