| original |
Middle Pennsylvanian |
|
Illinois |
Kosanke,R.M. Pennsylvanian spores of Illinois and their use in correlation. |
1950 |
| details |
Westphalian |
Stephanian |
France |
Alpern,B. Succinct descriptions of the principal genera and species of pollen and spores found in the Coals of Central and eastern France. |
1956 |
| details |
Nd |
|
Nd |
DybovЎ,S. et al. Microspores of the Upper Silesian Coal Measures. |
1957 |
| details |
Nd |
|
France |
Alpern,B. Contribution to the palynological and petrographic study of French Coals. |
1959 |
| details |
Early Westphalian B |
|
Illinois |
DybovЎ,S. et al. Microsporic correlation of the Synclinal Group Deposits in the Upper Silesian Basin, with the Coal Measures Groups of the Illinois, (USA). (In: Contributions to the Geology of the Silesian and Cracovian Regions. Volume 6. |
1960 |
| details |
Middle Stephanian |
|
France(Aveyron) |
Doubinger,J. Sporologic associations (Microspores) of some Stephanian and Autunian deposits |
1960 |
| details |
Nd |
|
Nd |
Chaloner,W.G. A Sporangiostrobus with Densosporites microspores |
1962 |
| details |
Westphalian D |
|
France |
Navale,G.K.B. Palynological studies of Merlabach Coals in conjunction with petrographic structure. |
1964 |
| details |
Late Visean |
Westphalian A |
Poland |
Karczewska,J. Carboniferous spores from the Chelmi Boring (Eastern Poland). |
1967 |
| details |
Early Atokan |
|
Kentucky |
Peppers,R.A. Palynological correlation of major Pennsylvanian, (Middle and Upper Carboniferous), chronostratigraphic boundaries in Illinois and other Acoal Basins. |
1996 |
| details |
Late Atokan |
|
Tennessee |
Peppers,R.A. Palynological correlation of major Pennsylvanian, (Middle and Upper Carboniferous), chronostratigraphic boundaries in Illinois and other Acoal Basins. |
1996 |