Middle Ordovician Pogonip Group

Inyo County, California

Gastropod cross-section from the Middle Ordovician Pogonip Group, Inyo County, California. Palliseria robusta. From the westernmost outcrops of the same world-famous association of geologic rock formations that outcrop in Nevada and western Utah. Photograph courtesy a person who goes by the cyber-name Snow Nymph.

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