| details |
Early Miocene |
|
Poland |
Doktorowicz-Hrebnicka,J. Microfloristic investigations of Brown Coal at Miroslawice Gorne in Lower Silesia. |
1956 |
| details |
Late Pliocene |
|
W.Germany(Schleswig) |
Weyl,R. et al. The age of the Kaolin Sands from Sylt |
1955 |
| details |
Late Miocene |
Early Pliocene |
Austria |
Klaus,W. Observations on the palynology of the Hausruck Co |
1952 |
| details |
Pliocene |
|
W.Germany(Baden) |
Wolff,H. Microfossils of the Pliocene Brown Coal from the Freigericht Mine near Dettingenam and comparison with older layers of the Tertiary as Sowie as post-Tertiary deposits. |
1934 |
| original |
Miocene |
|
E.Germany |
Potonie,R. Pollenforms from the Tertiary Brown Coals. |
1931 |