| details |
Pennsylvanian |
|
USA(Appalachian Bn.) |
Eble,C.F. Paleoecology of Pennsylvanian Coal Beds in the Appalacian Basin. (Principles and Applications. Applications. J.Jansonius and D.C.McGregor, editors.) |
1996 |
| details |
Westphalian A |
|
Poland |
GŠ³recka-Nowak,A. Miospore associations as indicators of the origin of coal seams in the Intrasudetic Basin (southwest Poland). |
1999 |
| details |
Westphalian A |
|
Canada(Nova Scotia) |
Hower,J.C. et al. Metalliferous coals of the Westphalian A Joggins Formation, Cumberland Basin, Nova Scotia, Canada: petrology, geochemistry, and palynology. |
2000 |