| original |
Desmoinesian |
|
Illinois |
Peppers,R.A. Correlation and palynology of coals in the Carbondale and Spoon Formations (Pennsylvanian) of the northeastern part of the Illinois Basin. |
1970 |
| details |
Westphalian C |
Early Stephanian |
Spain |
Chўteauneuf,J.-J. Palnology of the productive layers of the Central Basin of Asturias (Spain) |
1974 |
| details |
Westphalian A |
|
Virginia |
Eble,C.F. Lower and Lower Middle Pennsylvanian coal palynofloras, southwestern Virginia. |
1996 |
| details |
Stephanian |
|
Kansas |
Peppers,R.A. Palynology of the Lost Branch Formation of Kansas: New insight the major floral transition at the Middle - Upper Pennsylvanian boundary. |
1997 |