| details |
Allegheny |
|
Pennsylvania |
Habib,D. Distribution of spore and pollen assemblages in the Lower Kittanning Coal of Western Pennsylvania |
1966 |
| details |
Late Desmoinesian |
|
Texas |
Gupta,S. Palynology of the Upper Strawn Series, (Upper Pennsylvanian), of Texas above the Fusulina Zone. |
1969 |
| details |
Pennsylvanian |
|
Iowa |
Ravn,R.L. An introduction to the stratigraphic palynology of the Cherokee Group (Pennsylvanian) coals of Iowa. |
1979 |
| details |
Morrowan |
Early Missourian |
Iowa |
Ravn,R.L. Palynostratigraphy of the Lower and Middle Pennsylvanian Coals of Iowa |
1986 |