| details |
Hettangian |
|
Poland |
Orlowska-Zwolinska,T. Microfloristic criteria for age determination of the beds occurring at the Triassic-Jurassic boundary in the Extra-Carpthian areas of Poland. |
1967 |
| details |
Namurian A |
Early Westphalian B |
Czechoslovakia |
DybovЎ,S. et al. Microspore-Zones of the Carboniferous of the Ostrava-Karvina Region |
1957 |
| details |
Westphalian A |
Westphalian B |
Czechoslovakia |
Jachowicz,A. Boundary between Ruda and Orzesze Beds in "Silesia" Coal Mine in view of microspore investigations, (Upper Silesia). (In: Contributions to the Geology of the Silesian and Cracovian Regions.) |
1957 |