| details |
Oligocene |
Late Neogene |
W.Germany |
Potonie,R. Revision of stratigraphically important sporomorphs of the Middle European Tertiary. |
1951 |
| details |
Miocene |
Late Neogene |
Germany(Rhineland) |
Potonie,R. et al. On the nomenclature and classification of the Neogene sporomorphs (Pollen and spores). on the geology of the Rhine Valle Brown Coal. 1. |
1950 |
| details |
Early Miocene |
|
Germany |
Potonie,R. State of the micropaleobotanic stratigraphy of the Tertiary |
1948 |
| original |
Miocene |
Late Neogene |
W.Germany(Bavaria) |
Raatz,G.V Microbotanical stratigraphic investigation of the Browncoal of Muskauer Bogens |
1938 |
| details |
Miocene |
Late Neogene |
W.Germany(Bavaria) |
Raatz,G.V Microbotanical stratigraphic investigation of the Browncoal of Muskauer Bogens |
1938 |
| details |
Miocene |
|
W.Germany(N.Rhine) |
Potonie,R. et al. Microbotany of Miocene Brown Coal from the Niederrheinische Bucht |
1934 |