| details |
Desmoinesian |
|
Indiana |
Guennel,G.K. Fossil spores of the Alleghenian Coals in Indiana |
1952 |
| details |
Chesterian |
|
Illinois |
Kosanke,R.M. et al. Spores from Chesterian Coals of the Illinois Basin |
1981 |
| details |
Chesterian |
|
Kentucky |
Kosanke,R.M. et al. Spores from Chesterian Coals of the Illinois Basin |
1981 |
| details |
Chesterian |
|
Indiana |
Kosanke,R.M. et al. Spores from Chesterian Coals of the Illinois Basin |
1981 |
| details |
Chesterian |
Desmoinesian |
North America |
Frederiksen,N.O. The Rise of the Mesophytic flora |
1972 |
| details |
Chesterian |
|
Illinois |
Eggert,D.L. Distribution of palynomorphs in the Waltersburg Formation (Chesterian) of southern Illinois. |
1975 |
| details |
Carboniferous |
|
England(Staffordshire) |
Alpern,B. Some Current problems of Coal palynology. |
1960 |
| details |
Carboniferous |
|
Nd |
Bharadwaj,D.C. et al. Suggestions for a morphological classification of sporae dispersae. |
1968 |