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From
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Geolocation
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Author - title
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Year
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| details | Danian | Thanetian | Georgia | Frederiksen,N.O. Lower Tertiary sporomorph biostratigraphy | 1980 |
| details | Danian | Thanetian | Alabama | Frederiksen,N.O. Lower Tertiary sporomorph biostratigraphy | 1980 |
| details | Danian | Maryland | Frederiksen,N.O. Lower Tertiary pollen biostratigraphy Maryland and Virginia. (In: Cretaceous and Tertiary Stratigraphy, Paleontology and Structure, Southwestern Maryland and Northeastern Virginia. N.O.Frederiksen and K.Krafft, editors) | 1984 |