original |
Early Cambrian |
|
USSR(Estonian SSR) |
Timofeev,B.V. Micropaleophytological research into ancient strata. |
1966 |
original |
Early Cambrian |
|
USSR(Vologda) |
Timofeev,B.V. Micropaleophytological research into ancient strata. |
1966 |
original |
Early Cambrian |
|
USSR(Ukrainian SSR) |
Timofeev,B.V. Micropaleophytological research into ancient strata. |
1966 |
original |
Proterozoic |
Silurian |
Czechoslovakia |
SnopkovŠ,P. et al. Biostratigraphy of the Gelnica Group in the Spissko-Gemerski Rudohoris (Mountains), based on palynological data. |
1979 |
original |
Proterozoic |
Ordovician |
Czechoslovakia |
SnopkovŠ,P. et al. Biostratigraphy of the Gelnica Group in the Spissko-Gemerski Rudohoris (Mountains), based on palynological data. |
1979 |