| details |
Oligocene |
Pleistocene |
Bulgaria |
Chernyavska,S. et al. Correlation of the Old Tertiary Basins in Southwest Bulgaria on the basis of the spore and pollen analysis. |
1964 |
| details |
Late Eocene |
|
Bulgaria |
Chernyavska,S. Fossil spores and pollen grains of the Priabonian Coal Basins in Bulgaria and their climatic interpretation. |
1967 |
| details |
Late Eocene |
|
Bulgaria |
Chernyavska,S. Spore-pollen zones in certain Old Tertiary Coal bearing sediments in Bulgaria. |
1970 |
| details |
Oligocene |
|
Bulgaria |
Chernyavska,S. et al. Palynological characteristic of Oligocene marine Clays from Varna District. |
1968 |
| details |
Late Eocene |
|
Bulgaria |
Chernyavska,S. Spore and pollen characteristics of Coal-bearing sediments in the vicinity of the village Pchelarovo, East Rodopi. |
1973 |
| details |
Aquitanian |
|
France(Indre-et-Loire) |
Charrier,P. et al. Stratigraphy. |
1980 |
| details |
Oligocene |
|
Bulgaria |
Borissov,H. et al. Lithology of the Tertiary sediments in the Southern Part of Western Rhodope |
1973 |
| details |
Middle Miocene |
Late Miocene |
Yugoslavia |
Bokcic,P. Some new data on the geology and sedimentary layers of Pec in the Metohija. |
1972 |
| details |
Miocene |
|
Germany |
Altehenger,A. Floral evidence of climatic variations in the Middle-Pliocene of the Reuver Stage |
1959 |