| details |
Late Eocene |
|
Bulgaria |
Chernyavska,S. Spore-pollen zones in certain Old Tertiary Coal bearing sediments in Bulgaria. |
1970 |
| 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 |
Eocene |
Chattian |
Belgium |
Roche,E. Belgium. (In: The Northwest European Tertiary Basin. R.Vinken, compiler) |
1988 |
| details |
Late Pliocene |
|
Belgium |
Hacquaert,N. Palynological study of Cenozoic marine Sands, (Scaldisian and Merxemian), from the Hansadok of Antwerp. |
1960 |
| details |
Early Eocene |
|
Belgium |
Krutzsch,W. et al. Pollenflora from Epinois and Loksbergen, Belgium. |
1977 |