| original |
Sakmarian |
Artinskian |
India(Madhya Pradesh) |
Datta,A.K. Note on the Palaeontology of the sedimentary rocks in the Jhagrakhand area, Madhya Pradesh |
1957 |
| original |
Late Pennsylvanian |
|
Illinois |
Peppers,R.A. Palynology of the McLeansboro Group of Illinois and equivalent strata of Western Kentucky |
1961 |
| original |
Late Pennsylvanian |
|
Kentucky |
Peppers,R.A. Palynology of the McLeansboro Group of Illinois and equivalent strata of Western Kentucky |
1961 |
| original |
Conemaugh |
Monongahela |
Kentucky |
Peppers,R.A. Spores in strata of Late Pennsylvanian cyclothems in the Illinois Basin. |
1964 |
| original |
Conemaugh |
Monongahela |
Illinois |
Peppers,R.A. Spores in strata of Late Pennsylvanian cyclothems in the Illinois Basin. |
1964 |
| original |
Allegheny |
|
Ohio |
Gray,L.R. Palynology of four Allegheny Coals, northern Appalachian Coal Field. |
1967 |
| original |
Stephanian |
|
Switzerland |
Hochuli,P.A. Palynostratigraphic classification and correlation of Permo-Carboniferous of northern Switzerland |
1985 |