| original |
Conemaugh |
Monongahela |
Kentucky |
Peppers,R.A. Spores in strata of Late Pennsylvanian cyclothems in the Illinois Basin. |
1964 |
| details |
Late Stephanian |
|
E.Germany(Leipzig) |
Dжring,H. et al. On the microfloristic and Megafloristic classification of age of the Wettin Beds (Uppermost Stephanian) in the northern Saale Depression. |
1973 |
| details |
Atokan |
Early Desmoinesian |
Illinois |
Peppers,R.A. Development of Coal-Forming floras during the Early Part of the Pennsylvanian in Theillinois Basin. |
1979 |
| details |
Stephanian D |
|
Czechoslovakia |
Planderova,E. Biostratigraphical Valuation of the Carboniferous of the Choc Napp, based on palynology. |
1979 |
| details |
Pennsylvanian |
|
Iowa |
Ravn,R.L. An introduction to the stratigraphic palynology of the Cherokee Group (Pennsylvanian) coals of Iowa. |
1979 |
| details |
Conemaugh |
Monongahela |
Kentucky |
Ravn,R.L. An introduction to the stratigraphic palynology of the Cherokee Group (Pennsylvanian) coals of Iowa. |
1979 |
| details |
Middle Pennsylvanian |
|
Iowa |
Ravn,R.L. Palynostratigraphy of the Lower and Middle Pennsylvanian Coals of Iowa |
1986 |
| details |
Conemaugh |
Monongahela |
Kentucky |
Ravn,R.L. Palynostratigraphy of the Lower and Middle Pennsylvanian Coals of Iowa |
1986 |