Diplodocidae species indeterminate
    Late Jurassic
    Dana Quarry, Washakie County, Wyoming, USA

    This lot represents a complete and well-preserved humerus belonging to a young sauropod. Fossils like the present one belonging to immature individuals are quite rare, thereby making species identification difficult. This interesting specimen may have belonged to one of several known diplodocid species that range in the Lower Morrison, including Apatosaurus, Diplodocus, and Barosaurus. They grew to be enormous animals, the Amphicoelias conjectured to have reached up to 130 feet in length, but they are characterized by relatively short stumpy legs. This specimen was recovered from the Dana Quarry, located at the edge of the Bighorn Mountains near the town of Ten Sleep, Wyoming. Recent excavations have revealed a spectacular Morrison Formation site, preserving an enormous multi-species death assemblage of dinosaurs. Current speculation suggests that the Dana Quarry may have previously been a natural trap where herbivorous species perished together in a shrinking water hole, possibly during a catastrophic drought. The weak and dying may have been caught in the mud long enough to attract the attention of predators, who in turn were trapped while feeding on "easy pickings". The carnage preserved here is reminiscent of the conditions that existed in the Tar pits of Rancho La Brea, where Ice Age mammals were drawn to their death by just such a rare predator/prey chain reaction event. The present specimen displays the excellent quality of fossils from this quarry, with a lovely deep brown patination and superb bone texture, and measures 27 inches in length.

    Estimate: $3,000 - $3,400.

    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.

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    Auction Dates
    May, 2009
    17th-18th Sunday-Monday
    Bids + Registered Phone Bidders: 1
    Lot Tracking Activity: N/A
    Page Views: 743

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