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Geolocation
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Author - title
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Year
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| original | Early Eocene | Wyoming | Nichols,D.J. Palynology of the Vermillion Creek Coal Bed and associated strata. (In: Geological Investigations of the Vermillion Creek Coal Bed in the Eocene Niland Tongue of the Wasatch Formation, Sweetwater County, Wyoming. H.W. Roehler and P.L. Martin, editors) | 1987 | |
| original | Cenomanian | Coniacian | Wyoming | Upshaw,C.F. Palynologic zonation of the Upper Cretaceous Frontier Formation near Dubois, Wyoming. (In: Palynology in Oil Exploration, Aureal T. Cross, editor) | 1964 |