| details |
Early Tortonian |
|
Hungary |
Nagy,E. et al. Comparative pollen analytic study of the Borings Band 2. and Band 3. |
1966 |
| details |
Tertiary |
|
Germany(Brandenburg) |
Sontag,E. Microbotanical (Palynological) analysis on 2 Niederlausitzer Seam horizon |
1966 |
| details |
Early Miocene |
|
Poland |
Potonie,R. Synopsis of the genera of the sporae dispersae. Part 3 |
1960 |
| details |
Middle Eocene |
|
W.Germany(Hesse) |
Krutzsch,W. Micropaleontologic (spore paleontology), investigation of the Brown Coal of the Geiseltal. |
1959 |
| original |
Late Oligocene |
|
E.Germany(Dresden) |
Hunger,R. Microbotanical-stratigraphic investigations of Brown Coal of the Southern Oberlausitz and pollen analysis as a means for the interpretation of Seamo Rigin. |
1953 |