| original |
Early Permian |
|
China(Liaoning) |
Imgrund,R. The sporites of the Kaiping Basin, their paleontologic and stratigraphic treatment in view of a parallelization with the Ruhr Carboniferous and the Pennsylvanian of Illinois. |
1952 |
| details |
Nd |
|
Nd |
Potonie,R. Synopsis of the genera of the sporae dispersae. Part 3 |
1960 |
| details |
Nd |
|
Nd |
Loboziak,S. The micro and megaspores of the western part of the northern Coal Basin of France. |
1971 |
| details |
Early Ufimian |
|
USSR(Komi ASSR) |
Budanov,G.D. et al. Ufimian Stage of the West Timan Region |
1971 |
| details |
Westphalian |
Stephanian A |
Hungary |
Barabas-Stuhl,A. Contribution to the biostratigraphy of the Upper Paleozoic in Transdanubia, (western Hungary). |
1975 |