| details |
Early Oligocene |
|
Russia(Caucasus) |
Krasheninnikov,V.A. et al. Reference sections of the Eocene - Oligocene boundary strata on the territory of the former Soviet Union. The Kuban River section (Northern Caucasus, Russia). (In: Late Eocene-Early Oligocene geological and Biotical events on the Territory of the Former Soviet Union.Part 2: The Regional Geology of the Upper Eocene and Lower Oligocene. (V.A.Krasheninnikov and A.Akhmetiev, editors) |
1996 |
| details |
Early Oligocene |
|
Russia(Caucasus) |
Zaporozhets,N.I. Lower Oligocene palynology and phytoplankton of the northern Caucasus |
1993 |
| details |
Early Miocene |
|
W.Germany(N.Rhine) |
Rusbult,J. et al. Microfossils from the Lower to Middle Miocene of the Brown Coal exploration Well Luebtheen 46/84, Southwestern Mecklenburg |
1992 |