| original |
Early Tournaisian |
|
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 |
| details |
Early Namurian B |
Early Westphalian A |
Poland |
Gгrecka,T. Namurian-Westphalian boundary in the North-Western part of the Intra-Sudetic Trough. |
1968 |
| details |
Namurian B |
Early Westphalian A |
Poland |
Gгrecka,T. Stratigraphy of the Bialy Kamien Beds in the northwestern part of the Intra-Sudetic Trough on the Ground of palynological research. (In: Geological research in the Lower Silesian Region) |
1969 |
| details |
Carboniferous |
|
Poland |
Jachowicz,A. Flora of the Carboniferous:Microflora |
1972 |