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Geolocation
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Author - title
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Year
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| original | Late Cretaceous | Utah | Sarmiento,R. Microfossil zonation of Manco Group. | 1957 | |
| details | Early Cretaceous | Campanian | Europe | Krutzsch,W. Spore and pollen Groups from the Upper Cretaceous and the Tertiary of Middle Europe and their stratigraphic distribution. | 1957 |
| details | Cenomanian | Wyoming | Griesbach,F.R. Preliminary palynology of the Lower Frontier Formation, southwestern Wyoming. | 1956 |