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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 | Eocene | North Dakota | Kremp,G.O.W. et al. Some problems in the taxonomy of the Tertiary pollen and spores of North and South Dakota. | 1961 |
| original | Paleocene | Eocene | South Dakota | Kremp,G.O.W. et al. Some problems in the taxonomy of the Tertiary pollen and spores of North and South Dakota. | 1961 |