Asterotrygon maloneyi
    Green River Formation, Lincoln Co, Wyoming

    The fossil beds of the Green River Formation are renowned for the abundance of fish species and for the quality of their preservation. Amongst the most sought-after of these specimens is the stingray, its fragile "wing" bones making it a particularly tricky prize for the fossil hunter to excavate. On the rare occasions when they are found and removed successfully, the animal is most usually represented by the Heliobatus, but in 2004 a new species was recognized and described - the Asterotrygon maloneyi. The A. maloneyi is strikingly similar to H. radians but is distinguished by the presence of a dorsal fin covered in denticles directly anterior to the caudal stings, and by individual vertebrae in the tail as opposed to cartilage. These elements are present here in good three-dimensionality, as well as the well-defined tail barbs and the tiny bones radiating from the main body. A superbly prepared example of a highly rare fossil from one of the premier localities in the world, and the first of its kind to be offered at auction, it measures 16 inches long on a kite-shaped matrix 25 x 14ΒΌ inches.

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    Auction Dates
    June, 2011
    12th Sunday
    Bids + Registered Phone Bidders: 2
    Lot Tracking Activity: N/A
    Page Views: 1,172

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