original |
Desmoinesian |
|
Oklahoma |
Bordeau,K.V. Palynology of the Drywood Coal (Pennsylvanian) of Oklahoma. |
1964 |
original |
Early Guadalupian |
|
Oklahoma |
Clapham,W.B. Permian miospores from the Flowerpot Formation of western Oklahoma |
1970 |
original |
Westphalian D |
|
Czechoslovakia |
KalibovЎ,M. Monolete spores (Monoletes Ibrahim 1933) in the Carboniferous underlying the Cretaceous of Bohemia. |
1970 |
original |
Stephanian B |
Stephanian C |
USA |
Clendening,J.A. Sporological evidence on the geological age of the Dunkard strata in the Appalachian Basin. |
1970 |
original |
Early Guadalupian |
|
Oklahoma |
Clapham,W.B. Nature and paleogeography of Middle Permian floras of Oklahoma from their pollen record |
1970 |