Nanotyrannus Tooth, Fern Fossil, & Chocolate Opal Specimen
Updated August 6, 2026
| Lot number | 0161 |
| Estimate | $600 - $900 |
| Opening bid | $225 |
| Auction | Summer Marketplace | Ancient & Ethnographic |
| Date | August 13, 2026 at 11:00 AM EDT |
| Auction house | Artemis Fine Arts |
| Location | Louisville, Colorado |
Eastern Africa, Ethiopia, ca. millions of years ago; North America, United States, Montana, Hell Creek Formation, Late Cretaceous, ca. 100 to 66 million years ago; Missouri, Pennsylvanian, ca. 323
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