| details |
Late Eocene |
Early Oligocene |
W.Germany(Hesse) |
Murriger,F. et al. Concerning the age of Brown Coal of Burghasungen, Bezirk Kassel, based on pollen analysis and comparisons with other Browncoal deposits. |
1951 |
| details |
Eocene |
|
Germany |
Potonie,R. Pollen and spore forms as guide fossils of the Tertiary |
1951 |
| details |
Eocene |
|
France |
Reissinger,A. Pollen analysis extended to all sedimentary rocks of the geological past. |
1950 |
| details |
Late Cretaceous |
Paleocene |
W.Germany(Niedersachsen) |
Thiergart,F. The stratigraphic value of Mesozoic pollen and spores |
1949 |
| details |
Eocene |
Oligocene |
Germany |
Thiergart,F. Pollen analysis of the Service of Brown Coal research. |
1940 |
| original |
Eocene |
|
W.Germany(Hesse) |
Potonie,R. The microbotany of the Eocene Brown Coal of the Geiseltal. |
1934 |