• A Tyrannosaurus rex skeleton called "Gus" sold for $50.1 million at Sotheby's, setting a new auction record.
• The fossil, discovered in South Dakota, is one of the most complete T. rex skeletons with 183 bones.
• The sale sparked a debate over private ownership of fossils among paleontologists.

A Tyrannosaurus rex skeleton, affectionately named “Gus,” was sold for a record-breaking $50.1 million at a Sotheby's auction in New York. This transaction marks Gus as the most valuable dinosaur fossil ever auctioned, surpassing the previous record of a stegosaurus sold for nearly $45 million in 2024. Gus, with an estimated completion of roughly 63%, consists of 183 fossilized bones and was discovered in 2021 on a ranch in South Dakota during a detailed excavation process spanning three years, according to CBS News, BBC, and South China Morning Post.

The successful bid was completed after a swift 10-minute auction with seven bidders, ultimately resulting in an anonymous buyer clinching the deal. Cassandra Hatton, Sotheby’s head of science and natural history, emphasized that such exceptional specimens garner significant interest due to their historical and scientific value. The T. rex is noted for its "exceptionally preserved" skull, which includes unique features such as bite marks, indicating its challenging existence, reports Channel News Asia and NPR.

This sale raises questions regarding the ethical implications of private fossil ownership. Hatton stated that the United States operates under unique laws where fossils are considered personal property, leading to concerns from some paleontologists about significant specimens being lost to private collectors. The Society of Vertebrate Paleontology expressed a hope that the buyer would recognize Gus's educational value and consider donating it to a museum for public access, as seen with other notable fossils like "Sue" the T. rex on display at the Field Museum in Chicago, according to South China Morning Post and CBS News.