| details |
Tortonian |
Helvetian |
Czechoslovakia |
PacltovŠ,B. et al. New types of spores (genera and species), from the Bohemian Miocene. |
1970 |
| details |
Oligocene |
|
Bulgaria |
Chernyavska,S. et al. Correlation of the Old Tertiary Basins in Southwest Bulgaria on the basis of spore and pollen analysis |
1962 |
| details |
Eocene |
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 |
Middle Oligocene |
Early Miocene |
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 |
Early Oligocene |
|
Bulgaria |
Ivanov,R. et al. Geological, petrographical and palynological data on the age of the Palaeogene Volcanic activity in Western Bulgaria.3. ThePalogene of Mesta. |
1972 |
| details |
Oligocene |
|
Bulgaria |
Chernyavska,S. On the stratigraphy of Paleogene deposits of Bulgaria, (palynological data). |
1973 |
| details |
Late Pliocene |
|
Belgium |
Hacquaert,N. Palynological study of Cenozoic marine Sands, (Scaldisian and Merxemian), from the Hansadok of Antwerp. |
1960 |