| details |
Early Westphalian C |
|
France(Nord) |
Laveine,J.P. The spores of the subdivision Operculatriletes, nov.subdiv. |
1965 |
| details |
Early Westphalian C |
|
France(Pas-de-Calais) |
Laveine,J.P. The spores of the subdivision Operculatriletes, nov.subdiv. |
1965 |
| details |
Nd |
|
Nd |
Coquel,R. Palynologic study of the coal series of the Valenciennes production unit of the North France Coal Basin. |
1974 |
| details |
Pennsylvanian |
|
Iowa |
Ravn,R.L. An introduction to the stratigraphic palynology of the Cherokee Group (Pennsylvanian) coals of Iowa. |
1979 |
| details |
Middle Pennsylvanian |
|
Iowa |
Ravn,R.L. Palynostratigraphy of the Lower and Middle Pennsylvanian Coals of Iowa |
1986 |