| original |
Wealden |
|
W.Germany(Niedersachsen) |
Thiergart,F. The stratigraphic value of Mesozoic pollen and spores |
1949 |
| original |
Dogger |
|
USSR(Pre-Baltic) |
Thiergart,F. The stratigraphic value of Mesozoic pollen and spores |
1949 |
| original |
Late Rhaetian |
|
E.Germany(Potsdam) |
Thiergart,F. The stratigraphic value of Mesozoic pollen and spores |
1949 |
| details |
Late Oligocene |
Early Miocene |
W.Germany(Rhineland) |
Thompson,P.J. Lower Tertiary elements in the Rhineland Brown Coal and some important stratigraphic pollen forms. |
1949 |
| details |
Ypresian |
|
Belgium |
Pastiels,A. Contribution to the study of microfossils of the Belgian Eocene. |
1948 |
| details |
Eocene |
|
W.Germany(Hesse) |
Potonie,R. The microbotany of the Eocene Brown Coal of the Geiseltal. |
1934 |