Three Mosasaur Vertebrae, Niobrara Formation, Kansas, Late Cretaceous
Updated August 28, 2026
This auction ended on September 4, 2026.
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| Lot number | 0118 |
| Estimate | $550 - $750 |
| Opening bid | $250 |
| Auction | Native American | Ethno | Fine Art |
| Date | September 4, 2026 at 11:00 AM EDT |
| Auction house | Artemis Fine Arts |
| Location | Louisville, Colorado |
Ca. 86–88 million years old. North America, United States, Kansas, Western Interior Seaway, Late Cretaceous period, circa 87 to 82 million years ago. A group of three fossilized mosasaur
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