| details |
Early Oligocene |
|
USSR(Carpathians) |
Andreeva-Grigorovich,A.S. et al. Biostratigraphic characteristic of the Menilite Suite standard section along the River Chechva, (The Ukrainian Carpathians) |
1986 |
| details |
Early Oligocene |
|
USSR(Ukrainian SSR) |
Vialov,O.S. et al. Eocene and Oligocene key boundary sections of the North Slope of the Ukrainian Carpathians |
1987 |
| details |
Early Oligocene |
|
Canada(Eastern Offshore) |
Williams,G.L. et al. Cenozoic palynostratigraphy of offshore eastern Canada. (In: Contributions of stratigraphic palynology. With emphasis on North America. Volune 1. Cenozoic Palynology) |
1977 |
| details |
Early Eocene |
Oligocene |
Black Sea |
Drugg,W.S. et al. Stratigraphic range charts -Selected Cenozoic dinoflagellates. |
1975 |