Joopiter Auctioned Two Maiasaura Fossils
The 76-million-year-old adult and juvenile dinosaur specimens from Montana have hit the auction block.
Updated on Sept. 25, 2026 in Geology
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Joopiter has listed two Maiasaura fossils for auction, featuring an adult and a juvenile specimen originating from the Two Medicine geological formation in Montana. These fossils date back 76 million years.
Why it matters
The auction provides a public venue for the sale of significant paleontological remains from the Cretaceous period. Such listings move rare geological specimens from research contexts into private collections.
The adult Maiasaura measures 6.3 metres in length and 2.6 metres in height, while the juvenile specimen is 4 metres long and 1.9 metres tall. Both fossils originate from the Two Medicine geological formation.
The players
Joopiter
An auction house focused on high-value collectibles and rare artifacts.
The details
The specimens are being sold as a pair in an auction titled Hank & Koda: Two Maiasaura. The adult fossil is mounted in a walking position with its head lowered, representing a preserved configuration of the hadrosaurid, or duck-billed dinosaur, skeleton.
Timeline
The Maiasaura dinosaurs lived 76 million years ago.
The auction occurred on September 26, 2026.
The Tech Race
This auction follows the precedent set by the 2022 Christie's sale of a Deinonychus antirrhopus skeleton. It marks a continued trend of placing significant dinosaur fossils into the high-end private market.
These fossils are currently available for acquisition through the Joopiter auction process. Potential buyers and researchers should note that the physical dimensions and provenance are confirmed by the auction documentation.
The takeaway
The sale of these Two Medicine formation specimens highlights the ongoing market interest in large-scale vertebrate paleontology. Watch for the final settlement prices at the close of the Joopiter auction to gauge the current valuation of Cretaceous-era hadrosaurids.
Further reading
For more on the discovery and study of ancient remains, visit the Geology section.
Source note: This article includes information reported by Greek City Times.
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