| details |
Late Visean |
Early Namurian |
Nd |
Fensome,R.A. et al. Acritarchs and Fossil Prasinophytes: An index to genera, species and infraspecific taxa. |
1990 |
| details |
Namurian |
Westphalian |
Turkey |
Nakoman,E. Palynology of some Namurian and Westphalian A seams in the Karadon and d'Uzulmez sections of the Zonguldak Coal Basin. 1 .Qualitative study. |
1975 |
| details |
Tournaisian |
|
USSR(Ukrainian SSR) |
Vosanchuk,S.S. et al. The Devonian stratigraphy of the Southern Marginal Zone of the Dneiper-Donets Basin. |
1962 |
| original |
Visean |
Namurian |
USSR(Ukrainian SSR) |
Ishchenko,A.M. Spores and pollen of Lower Carboniferous deposits of the Western extension of the Donetz Basin and their values for stratigraphy. |
1956 |