| details |
Late Eocene |
|
Bulgaria |
Chernyavska,S. Upper Eocene spores from Brown Coals in eastern Bulgaria. |
1966 |
| details |
Late Eocene |
|
Bulgaria |
Chernyavska,S. Characteristics of the spore and pollen assemblages from the Upper Eocene Coals in eastern Bulgaria |
1967 |
| details |
Late Eocene |
|
Bulgaria |
Chernyavska,S. Spore-pollen zones in certain Old Tertiary Coal bearing sediments in Bulgaria. |
1970 |
| details |
Late Eocene |
|
USSR |
Aristova,K.E. Pollen and microplankton from boundary Eocene and Oligocene deposits in the southern part of the USSR. |
1971 |
| details |
Priabonian |
|
Bulgaria |
Ivanov,R. et al. On the age of the Palaeogene volcanic activity in Western Bulgaria according to data of geological, petrographical and palynolgical studies.1. The Palaeogene of the Suhostrel-Pades Are. |
1971 |
| details |
Eocene |
|
USSR |
Aristova,K.E. Pollen and microplankton from the Eocene-Oligocene boundary deposits in the Southern Part of the USSR |
1973 |
| details |
Late Eocene |
|
Bulgaria |
Chernyavska,S. Palynological studies on Paleogene deposits in South Bulgaria |
1977 |
| details |
Late Eocene |
|
Bulgaria |
Chernyavska,S. Palynological studies on Paleogene deposits in South Bulgaria. |
1977 |
| details |
Early Danian |
|
Denmark |
Kedves,M. Palynological investigations on sediments of the Lower Danian (Fish Clay, Denmark).II. |
1980 |
| details |
Early Paleogene |
|
USSR(Ukrainian SSR) |
Zaklinskaya,E.D. On problems of modern palynology. |
1981 |