| details |
Stephanian B |
Stephanian C |
USA |
Clendening,J.A. Sporological evidence on the geological age of the Dunkard strata in the Appalachian Basin. |
1970 |
| details |
Stephanian B |
Stephanian C |
USA |
Clendening,J.A. Sporological evidence on the geological age of the Dunkard strata in the Appalachian Basin. |
1970 |
| details |
Late Pennsylvanian |
|
Pennsylvania |
Clendening,J.A. Stratigraphic placement of the Dunkard according to palynological assemblages. |
1972 |
| details |
Late Pennsylvanian |
|
West Virginia |
Clendening,J.A. Stratigraphic placement of the Dunkard according to palynological assemblages. |
1972 |
| details |
Late Pennsylvanian |
|
West Virginia |
Kosanke,R.M. Palynological analyses of Upper Pennsylvanian Coal Beds and adjacent strata from the proposed Pennsylvanian system stratotype in West Virginia |
1988 |
| details |
Stephanian |
|
Kentucky |
Helfrich,C.T. et al. Palynologic and petrographic variation in the Otter Creek Coal Beds, (Stephanian, Upper Carboniferous), Western Kentucky. |
1989 |
| details |
Late Carboniferous |
|
Euramerica |
Dimichele,W.A. et al. Paleobotanical and paleoecological constraints on models of Peat Formation in the Late Carboniferous of Euramerica |
1994 |