| details |
Early Visean |
|
USSR(E.Kazakh Oblast) |
Grishina,T.S. Spore complexes of the Lower Carboniferous deposits of Rudney Altai. (In: Problems in the geology and Metalology of the Zayan Fold area) |
1973 |
| details |
Tournaisian |
Namurian C |
USSR(Rostov) |
Egorov,A.I. et al. Spores and pollen of Middle Carboniferous deposits of the Don Basin. |
1971 |
| details |
Visean |
|
USSR(Urals) |
Motovilov,P.I. Studies of plant remains in oil |
1965 |
| details |
Namurian |
|
Poland |
Jachowicz,A. New data concerning the occurence of microspores and pollen grains in the Namurian deposits of the north-eastern part of the Upper Silesian Coal Basin. |
1964 |
| original |
Tournaisian |
Visean |
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 |