Please note that will be down for scheduled maintenance from approximately 1 AM to 1:30 AM Central Time the morning of Monday, November 20th. We apologize for any inconvenience.



    Heliobatus radians
    Green River Formation, Wyoming

    Many of the aquatic animals that lived in the Fossil Lake of the Green River formation were descendants of marine species cut off from the oceans as the North American continents rose slowly from the primordial waters that covered much of the globe. This is the reason why the traditionally ocean-dwelling sting-ray was to be found in these fresh waters. Like their modern-day descendants, they were placid bottom dwellers, the fearsome tail barbs providing an excellent deterrent to predators who might otherwise have enjoyed them as a tasty dinner. As might be expected, the remains of these thin, delicate flat fish are rare. They are cartilaginous, a characteristic highly antipathetic to fossilization, and although the strata of the "18-inch layer" of the Fossil Lake make it relatively easy to remove the abundant fossils found there, the "wing" bones of the ray present one of the greatest challenges to the excavator, having the thickness of only two sheets of paper. The preparator's skill is likewise keenly tested in its presentation, and the fine detail of the present example is testament to a master of this most painstaking art. Detail to the body, fins and tail is excellent, and as an added bonus, the heavy barb is easily identifiable. The "wingspan" of this specimen is 6½ inches and its soft brown coloring harmonizes nicely with the pale cream limestone of the matrix; swimming dangerously close to the dangerous stinger is a small school of herring-like Knightia. The whole plaque measures 24 x 33½ inches overall.

    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. 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. All lots are sold "AS IS" under the Terms & Conditions of Auction.

    Fees, Shipping, and Handling Description: Requires 3rd Party Shipping (view shipping information)

    Sales Tax information  |  Terms and Conditions

    Bidding Guidelines and Bid Increments

    Glossary of Terms

    Auction Info

    Auction Dates
    January, 2010
    17th Sunday
    Bids + Registered Phone Bidders: 1
    Lot Tracking Activity: N/A
    Page Views: 1,549

    Buyer's Premium per Lot:
    19.5% of the successful bid (minimum $14) per lot.

    Sold for: Sign-in or Join (free & quick)

    Heritage membership

    Join Now - It's Free

    1. Past Auction Values (prices, photos, full descriptions, etc.)
    2. Bid online
    3. Free Collector newsletter
    4. Want List with instant e-mail notifications
    5. Reduced auction commissions when you resell your
    Consign now
    • Cash Advances
    • More Bidders
    • Trusted Experts
    • Over 200,000 Satisfied Consignors Since 1976
    Consign to the 2018 May 25 Photographs - Dallas.

    Learn about consigning with us

    I have to say I am very pleased with the final results and Heritage Auctions service.
    Philip M.,
    Truckee, CA
    View More Testimonials receives more traffic than any other auction house website. (Source:

    Video tutorial

    Getting the most out of search

    Recent auctions

    2017 October 13 Illustration Art Signature Auction - Dallas
    2017 October 13 Illustration Art Signature Auction - Dallas
    REALIZED $1,098,328