| details |
Badenian |
|
Romania |
Roman,S. et al. Considerations on the Badenian flora of Romania |
1986 |
| details |
Middle Oligocene |
Late Oligocene |
W.Germany(N.Rhine) |
Benedek,P.N. et al. Dinoflagellate cysts from the Middle and Upper Oligocene of Tжnisberg (Niederrheingebiet): A morphological and taxonomic restudy. |
1981 |
| details |
Ypresian |
|
Belgium |
De Coninck,J. Organic walled microfossils in the Clay of Ieper in the overijse borehole. |
1980 |
| details |
Auversian |
Sannoisian |
France(Paris Basin) |
Chўteauneuf,J.-J. Palynostratigraphy and paleoclimatic of the Late Eocene-Oligocene of the Paris Basin France |
1980 |
| details |
Middle Oligocene |
Middle Miocene |
Germany |
Stover,L.E. et al. Analyses of pre-Pleistocene organic-walled dinoflagellates. |
1978 |