| details |
Tournaisian |
Visean |
USSR(European) |
Umnova,N.I. et al. Spores of the genus Densosporites (Berry) Butterworth et al, and related genera in the Lower Carboniferous of the Russian Plate. (In: Palinologicheskie issledovaniya Proterozoya i Fanerozoya neftegazonoshykh. T.V. Byvsheva, editor.) |
1980 |
| details |
Early Carboniferous |
|
USSR(European) |
Byvsheva,T.V. et al. Spores of the genus Denosporites (Berry) Butterworth et al., and related genera in the Lower Carboniferous of the Russian Plate. (In: Palinologicheskie issledovaniya Proterozoya i Fanerozoya neftegazonoshykh. T.V. Byvsheva, editor.) |
1980 |
| original |
Visean |
Namurian |
USSR(Ukrainian SSR) |
Ishchenko,A.M. Spore and pollen analysis of the Lower Carboniferous deposits of the Dnieper-Donets Basin. |
1958 |