Search Results - New echinoid from the Cretaceous Pierre shale of eastern Wyoming.

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    The Red Bird section of the upper Cretaceous Pierre shale in Wyoming / by Gill, James R. (James Rogers), 1922-1972

    Published 1966
    Government Document Book

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  2. 2
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    The Red Bird section of the upper Cretaceous Pierre shale in Wyoming / by Gill, James R. (James Rogers), 1922-1972, Cobban, William A., 1916-2015, Kier, Porter M.

    Published 1966
    “…New echinoid from the Cretaceous Pierre shale of …”
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