| details |
Late Miocene |
Early Pleistocene |
Iceland |
Meyer,B.L. et al. On the pollen and Diatom flora contained in the Surtarbrandur of East Iceland. |
1957 |
| original |
Late Eocene |
Middle Miocene |
Germany(Hesse) |
Pflanzl,G. The age of Brown Coal of the Meissner Mountain, the Seams 2 and 3 of the Hirschberg and a neighbouring coalseam near Laudenbach. |
1956 |
| details |
Oligocene |
Middle Miocene |
W.Germany(N.Rhine) |
Stolz,G. Plant ecosystem of the Rhine Browncoal and their succession in special reference to the Bright Layers. |
1954 |