Nanotyrannus Skeleton To Be Auctioned For Up To $9 Million

Sotheby's New York will auction a 67-million-year-old dinosaur skeleton, identified as Nanotyrannus cf. lancensis, on October 27, 2026, with an estimated sale price between $6 million USD and $9 million USD. This specimen, previously exhibited as a juvenile Tyrannosaurus Rex named Chomper with a $20 million USD price tag, has undergone a scientific reclassification that significantly impacts its market valuation. The reclassification as Nanotyrannus, a distinct genus, resolves a long-standing paleontological debate about whether smaller theropod skeletons represent young T. rexes or a separate evolutionary lineage. This particular skeleton is one of only three known Nanotyrannus specimens and marks the first to be offered for sale since the genus's formal validation. The scientific validation was supported by a study published in the journal Nature by paleontologists Lindsay Zanno and James Napoli, who analyzed 200 fossils to establish Nanotyrannus as a valid genus. Their research identified 150 morphological differences between Nanotyrannus and T. rex, characterizing the Nanotyrannus as a fast, highly specialized predator. The specimen's previous exhibition at Frieze London in 2023 as Chomper, a juvenile T. rex, highlights the dramatic shift in its scientific understanding and market positioning. The substantial reduction in its asking price from $20 million USD to an estimated $6 million to $9 million USD underscores the financial implications of scientific reclassification in the high-value market for prehistoric artifacts. The auction is expected to test the market's response to a scientifically validated, yet historically re-branded, fossil. The Nanotyrannus genus is characterized by its smaller size and distinct anatomical features compared to Tyrannosaurus Rex, suggesting a different ecological niche and hunting strategy. The validation of Nanotyrannus as a separate genus has significant implications for understanding dinosaur evolution and diversity during the Late Cretaceous period. The rarity of complete Nanotyrannus skeletons, with only three known specimens, further contributes to the specimen's unique appeal to collectors and institutions. The auction house Sotheby's, a renowned platform for high-value art and collectibles, is facilitating this sale, aiming to attract significant global interest from wealthy collectors and museums.