Sotheby's New York will offer a fossilised dinosaur skeleton known as Jodi on October 27, estimated at $6 million to $9 million. The 19.6-foot-long predator, some 67 million years old, is one of only three known skeletons of its kind — and the first to reach the market since researchers established the species as distinct from Tyrannosaurus rex. The skeleton carries a dramatically changed identity. Exhibited at Frieze London in 2023 under the name Chomper as a juvenile T. rex, it reportedly carried a $20 million asking price. Subsequent research reclassified it as Nanotyrannus cf. lancensis, a smaller, more lightly built predator that lived alongside T. rex at the end of the Cretaceous period. That reclassification creates an unusual market tension: the specimen has become rarer and more significant to science while its commercial valuation has fallen substantially. The sale is expected to test how collectors price natural-history specimens when scientific importance, rarity and cultural familiarity collide. The offering continues the auction houses' run of marquee fossil sales, following the record prices set by T. rex specimens in recent years. Jodi's October sale will give the market its clearest read yet on what a newly defined species is worth at the top end of the natural-history segment. For Sotheby's, it is also a showcase of how far the house has pushed into collectibles beyond fine art, with natural-history lots now treated as flagship sale events in their own right.