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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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| original | Paleocene | Montana | Frederiksen,N.O. Stratigraphy and palynology of the Jackson Stage (Upper Eocene), and adjacent strata of Mississippi and Western Alabama. | 1967 | |
| original | Jackson | Vicksburg | Mississippi | Frederiksen,N.O. Stratigraphy and palynology of the Jackson Stage (Upper Eocene), and adjacent strata of Mississippi and Western Alabama. | 1967 |
| original | Paleocene | Montana | Wilson,L.R. et al. Plant microfossils from a Fort Union Coal of Montana. | 1946 |