original |
Middle Permian |
Late Permian |
India(Bihar) |
Tiwari,R.S. Miospore assemblage in some Coals of Barakar Stage (Lower Gondwana), of India. |
1965 |
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 |
Gearyan |
Cimarronian |
Kansas |
Clendening,J.A. Palynological evidence for a Pennsylvanian age assignment of the Dunkard Group in the Appalachian Basin. |
1974 |
original |
Late Baigendzhinian |
Early Tatarian |
Antarctica |
Playford,G. Proterozoic and Paleozoic palynology of Antarctica; a review. (In: Its Role in the Reconstruction of Gondwanaland. T.N. Taylor and E.L. Taylor, editors) |
1990 |