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Cenozoic, Mesozoic, Paleozoic Diagram on Page 85 of James Thornton's 1925 Wyoming Trip Geological Field Book.

The Oil Domes map on Page 102 of James Thornton's 1925 Wyoming Trip Geological Field Book capture the Upper Cretaceous period identified as a key data point.

Medicine Bow Mts Section on Page 107 of James Thornton's 1925 Wyoming Trip Geological Field Book illustrate the Pre-Cambrian foundation and Paleozoic layers as a key data point.

Story published by Jane Logan in the fall 1964 Casper College Expression magazine.
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