| details |
Late Conemaugh |
Early Monongahela |
Ohio |
Kosanke,R.M. The characteristic plant microfossils of the Pittsburgh and Pomeroy Coals of Ohio. |
1943 |
| details |
Westphalian B |
Westphalian C |
Germany |
Schopf,J.M. et al. An annotated synopsis of Paleozoic fossil spores and the definition of generic groups. |
1944 |
| details |
Carboniferous |
|
Pennsylvania |
Clendening,J.A. et al. Characteristic small spores of the Pittsburgh Coal in West Virginia and Pennsylvania |
1963 |
| details |
Carboniferous |
|
West Virginia |
Clendening,J.A. et al. Characteristic small spores of the Pittsburgh Coal in West Virginia and Pennsylvania |
1963 |
| details |
Late Pennsylvanian |
|
West Virginia |
Clendening,J.A. et al. Characteristic small spores of the Pittsburgh Coal in West Virginia and Pennsylvania. |
1964 |
| details |
Late Pennsylvanian |
|
Pennsylvania |
Clendening,J.A. et al. Characteristic small spores of the Pittsburgh Coal in West Virginia and Pennsylvania. |
1964 |
| details |
Nd |
|
Nd |
Smith,A.H.V. et al. Miospores in the coal seams of the Carboniferous of Great Britain. |
1967 |
| details |
Pennsylvanian |
|
Iowa |
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 |