| details |
Late Eocene |
Early Oligocene |
W.Germany(Hesse) |
Murriger,F. et al. Concerning the age of Brown Coal of Burghasungen, Bezirk Kassel, based on pollen analysis and comparisons with other Browncoal deposits. |
1951 |
| details |
Coniacian |
Early Tertiary |
E.Germany |
Krutzsch,W. The stratigraphic classification of spores from the Upper Cretaceous in North Central Europe-Methodical Bases and present status of investigations |
1966 |
| details |
Miocene |
|
W.Germany(Rhineland) |
Minnigerode,C. Paleoecological investigation of the floral of the Brown Coal of the Ville Block, Rhine Basin |
1985 |