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    Description

    SUPERB AMERICAN AMMONITE
    Placenticeras meeki
    Cretaceous
    Bearpaw Shale Formation, Montana

    This outstanding specimen of a Planticeras meeki was found in 1978 along an outcrop of the Bearpaw Shale Formation in Montana. It has been superbly prepared and highly polished, with the fernlike suture (growth) patterns exposed on each side, each outlined in a dark coffee brown, beautifully offset by the creamy yellow calcite between. These ammonites are found in medium to large nodules that occur in what was the Pierre Seaway, a shallow sea that covered the western interior of North America for millions of years. Many other types of fossils occur in this formation including Mollusca, Echinodermata, Cephalopoda, Ammonoidea, Brachiopoda and Reptilia to name a few. This esthetic example measures 11 inches in diameter.


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

    Auction Info

    Auction Dates
    June, 2008
    8th Sunday
    Bids + Registered Phone Bidders: 3
    Lot Tracking Activity: N/A
    Page Views: 1,335

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