Cretaceous Dinosaur Tooth & Opals - Richardoestesia, Hell Creek Formation
Updated August 6, 2026
| Lot number | 0165 |
| Estimate | $700 - $1,000 |
| Opening bid | $300 |
| 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, & North America, United States, Montana, ca. 72,000,000–66,000,000 BCE. An assorted group of natural history specimens including a dinosaur Richardoestesia tooth from
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