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Description

Uncoiled Ammonite Fossil in Matrix
Audoliceras sp.
Jurassic
Volga River, Ulianovsk Region, Russia

This rare Heteromorphic Ammonite specimen from the Jurassic strata of the Volga River basin represents the genus Audoliceras, known for its distinctive uncoiled, or loosely spiraled, shell form. Delicately prepared on its original matrix, the fossil reveals beautifully ribbed whorls with exceptional surface detail. Of particular note is the presence of iridescent mother-of-pearl (nacre) across the shell's surface-a rare and desirable preservation feature that shimmers with subtle hues under light, enhancing both its scientific and aesthetic value. The elegant curvature and delicate preparation make this an exceptional display piece for collectors of fine fossil specimens.
Overall Measurements: 9.00 x 7.00 x 3.35 inches (22.86 x 17.78 x 8.50 cm)

Provenance: Property of a Distinguished Southern California Collector


More Information: All items are offered "as is." While every effort has been made to accurately describe each lot, certain pieces—particularly fossils, minerals, and carvings—may exhibit minor imperfections, repairs, restorations, or natural wear consistent with age, excavation, or handling. Prospective buyers are encouraged to carefully review photographs and descriptions and to request additional condition information prior to bidding.


Condition Report*: Condition report available upon request.
*Heritage Auctions strives to provide as much information as possible but encourages in-person inspection by bidders. Statements regarding the condition of objects are only for general guidance and should not be relied upon as complete statements of fact, and do not constitute a representation, warranty or assumption of liability by Heritage. Some condition issues may not be noted in the condition report but are apparent in the provided photos which are considered part of the condition report. Please note that we do not de-frame lots estimated at $1,000 or less and may not be able to provide additional details for lots valued under $500. Heritage does not guarantee the condition of frames and shall not be liable for any damage/scratches to frames, glass/acrylic coverings, original boxes, display accessories, or art that has slipped in frames. All lots are sold "AS IS" under the Terms & Conditions of Auction.

Auction Info

Auction Dates
December, 2025
2nd Tuesday
Bids + Registered Phone Bidders: 16
Lot Tracking Activity: N/A
Page Views: 127

Buyer's Premium per Lot:
25% of the successful bid per lot.

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Sold on Dec 2, 2025 for: $350.00
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