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Geolocation
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Author - title
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Year
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| details | Early Miocene | Germany(Hesse) | Thiergart,F. Micropaleontological information. 3. Occurrence of hystrichospheres in the Lower Miocene Brown Coal of Finkenhee near Frankfurt on the Oder River. | 1942 | |
| details | Tertiary | Germany | Thiergart,F. Pollen analysis of the Service of Brown Coal research. | 1940 | |
| details | Middle Eocene | Late Pliocene | E.Germany | Kirchheimer,F. Comments in regard to the botanical classification of pollen of the Browncoal Layers. | 1938 |