| original |
Middle Oligocene |
Middle Miocene |
W.Germany(Hesse) |
Thomson,P.W. et al. Pollen and spores of the Middle European Tertiary. |
1953 |
| details |
Late Eocene |
|
W.Germany(Hesse) |
Pflug,H.D. On the age succession and facies correlation of Middle European, (in particular Hessen) Brown Coal. |
1957 |
| details |
Miocene |
|
Netherlands |
Manten,A.A. Palynology of the Miocene Browncoal Mined at Haanrade (Limburg, Netherlands). |
1958 |
| details |
Middle Oligocene |
Late Oligocene |
Romania |
Olaru,L. Research on the stratigraphical distribution of microflora in the Paleogene flysch situated between the Bistrita and Totus Rivers. |
1978 |
| details |
Ottnangian |
Badenian |
Hungary |
Nagy,E. Sporomorphs of the Neogene in Hungary |
1985 |
| details |
Ottnangian |
Middle Badenian |
Hungary |
Nagy,E. A comprehensive study of Neogene sporomorphs in Hungary |
1992 |