| details |
Early Permian |
|
China(Liaoning) |
Imgrund,R. Dispersed spores of the Kaiping Basin, their paleontologic and stratigraphic comparison with the Upper Carboniferous of the Ruhr area and the Pennsylvanian of Illinois. |
1960 |
| details |
Early Pennsylvanian |
|
Michigan |
Venkatachala,B.S. et al. Pollen and spores from the Pre-Verne Cyclical Formation of the Saginaw Group, Grande Ledge, Michigan, USA. |
1971 |
| details |
Desmoinesian |
|
Oklahoma |
Bordeau,K.V. Palynology of the Drywood Coal (Pennsylvanian) of Oklahoma. |
1964 |
| details |
Desmoinesian |
|
Ohio |
Kosanke,R.M. et al. Late Pennsylvanian climate changes and palynomorph extinctions |
1996 |
| details |
Desmoinesian |
|
Ohio |
Kosanke,R.M. et al. Late Pennsylvanian climate changes and palynomorph extinctions |
1996 |
| details |
Carboniferous |
|
Poland |
Jachowicz,A. Flora of the Carboniferous:Microflora |
1972 |
| details |
Allegheny |
|
Pennsylvania |
Frederiksen,N.O. Sporomorphs of the Brookville Seam near Brookville, Pennsylvania. |
1961 |