Rare Fossils

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  • Heliobatis radians

    The stingray is usually found in seawater, but a few living freshwater species are known. They fed on the bottom in shallow water. Length up to 18".

  • Turtle - Trionyx

    Turtles are extremely rare in the Green River deposits.  The turtle pictured was a soft shell Trionyx, similar to but much larger than modern species.