| details |
Devonian |
Early Carboniferous |
USSR(Ukrainian SSR) |
Ishchenko,A.M. Spore and pollen analysis of the Lower Carboniferous deposits of the Dnieper-Donets Basin. |
1958 |
| details |
Tournaisian |
Namurian |
USSR(Kazakh SSR) |
Lyuber,A.A. Atlas of spores and pollen of the Paleozoic deposits of Kazakhstan. |
1955 |
| original |
Devonian |
|
USSR(Nenets Nat.Okrug) |
Lyuber,A.A. et al. Atlas of microspores and pollen of the Paleozoic of the USSR. |
1941 |
| details |
Devonian |
|
USSR(Siberia) |
Obrhel,J. On the occurrance of spores and pollen (sporae dispersae) in Lower Paleozoic and Pre-Paleozoic formations |
1958 |