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From
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To
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Geolocation
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Author - title
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Year
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| details | Puercan | Dragonian | Montana | Newman,K.R. Palynomorphs from the Livingston Group and Fort Union Formation, Crazy Mountains Basin, Montana. | 1968 |
| details | Late Cretaceous | Montana | Norton,N.J. et al. Guide sporomorphae in the Upper Cretaceous-Lower Tertiary of eastern Montana (U.S.A). | 1967 | |
| original | Paleocene | Colorado | Newman,K.R. Upper Cretaceous-Paleocene guide palynomorphs from Northwestern Colorado. | 1965 |