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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 | Early Reuverian | W.Germany(N.Rhine) | Leschik,G. The origins of the Brown Coal of the Wetterau and its Micro-and Macroflora. | 1956 | |
| original | Middle Eocene | W.Germany(Hesse) | Thomson,P.W. et al. Pollen and spores of the Middle European Tertiary. | 1953 | |
| details | Middle Eocene | Germany(Niedersachsen) | Pflug,H.D. Palynology and stratigraphy of the Eocene Brown-Coal of Helmstedt. | 1952 |