| details |
Middle Miocene |
|
Poland |
Doktorowicz-Hrebnicka,J. Correlation of Brown Coal Seams from the Provinces of Poznan and Bydgoszcz. Part 2 of stratigraphy of the Middle Miocene in Cental Poland based on spore and pollen analysis of Brown Coal from the Provinces of Bydgoszcz and Poznan. |
1960 |
| details |
Early Miocene |
|
Poland |
Doktorowicz-Hrebnicka,J. Microfloristic investigations of Brown Coal at Miroslawice Gorne in Lower Silesia. |
1956 |
| original |
Miocene |
|
E.Germany |
Potonie,R. Pollenforms from the Tertiary Brown Coals. |
1931 |
| details |
Late Oligocene |
|
Austria |
Klaus,W. Shape and preservation of fossil pollen grains in Coprolites and Phosphorites. |
1971 |
| details |
Late Pliocene |
|
W.Germany(Schleswig) |
Weyl,R. et al. The age of the Kaolin Sands from Sylt |
1955 |