| details |
Oligocene |
Middle Miocene |
W.Germany(N.Rhine) |
Stolz,G. Plant ecosystem of the Rhine Browncoal and their succession in special reference to the Bright Layers. |
1954 |
| details |
Middle Eocene |
Late Pliocene |
W.Germany(Hesse) |
Thomson,P.W. et al. Pollen and spores of the Middle European Tertiary. |
1953 |
| details |
Middle Senonian |
|
W.Germany(N.Rhine) |
Weyland,H. et al. The spores and pollen of the Cretaceous of Aachen and their meaning for the characterization of the Middle Senonian. |
1953 |
| details |
Miocene |
|
W.Germany(N.Rhine) |
Thomson,P.W. et al. Pollen and spores of the Middle European Tertiary. |
1953 |