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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 | Middle Oligocene | Late Oligocene | W.Germany(N.Rhine) | Benedek,P.N. Phytoplanktons from the Middle and Upper Oligocene of Tonisberg, (Lower Rhine area). | 1972 |
| details | Bartonian | France | Auffret,J.P. et al. Palynological data of the Submarine Paleogene Basin of the eastern English Channel | 1975 |