T. Rex "Gus" Most Valuable Dinosaur offered at Auction to Headline Sotheby's Geek Week
This summer, Sotheby’s will offer “Gus,” one of the largest and most complete Tyrannosaurus rex specimens ever discovered, and the best specimen in private hands.
Estimated at $20–30 million, the highest estimate ever placed on a dinosaur, this extraordinary fossil, excavated over field seasons in 2021, 2022, and 2023, will be the star highlight of Sotheby’s live Natural History Auction on 14th July.
T. rex lived during the Late Cretaceous, in the Maastrichtian age, a time marked by warm climates, high sea levels, and rich coastal floodplains that supported an extraordinary diversity of life across what is now western North America. These environments, from river systems to open woodlands, created the ecological conditions in which large herbivores such as Triceratops and Edmontosaurus flourished, and in turn sustained apex predators like T. rex.
Today, T. rex reigns as the world’s most recognized dinosaur – a creature so embedded in popular consciousness, from blockbuster movies to children’s coloring books, that its silhouette is known worldwide. It is distinguished by an immense skull, deep‑rooted long teeth, and an exceptionally powerful bite, alongside a highly developed sense of smell and forward‑facing vision. Its massive hindlimbs and muscular tail suggest a predator built for bursts of speed and force. “Gus” would have sat right at the top of the ecosystem, using its strength, sharp senses, and adaptability to become one of the most powerful predators the world has ever seen.
“Gus” will be offered on 14th July during the Natural History auction, marking the latest chapter in Sotheby's industry-leading Natural History sales. The series began in 1997 with the groundbreaking auction of Sue the T. rex, the first dinosaur ever sold at auction, now a centerpiece of the Field Museum in Chicago. It culminated in 2024 with the historic sale of "Apex," which achieved $45 million and set a world record for any dinosaur or fossil at auction, and in 2025 with the sale of the juvenile Ceratosaurus at $30.5 million, the third highest price ever achieved for a dinosaur at auction. "Apex" is now on long-term loan to the American Museum of Natural History in New York.
Main Image: Photo Credit: Matthew Sherman