| details |
Allegheny |
|
Pennsylvania |
Habib,D. Distribution of spore and pollen assemblages in the Lower Kittanning Coal of Western Pennsylvania. |
1966 |
| original |
Allegheny |
|
Pennsylvania |
Habib,D. Distribution of spore and pollen assemblages in the Lower Kittanning Coal of Western Pennsylvania |
1966 |
| details |
Allegheny |
|
Pennsylvania |
Habib,D. et al. Relationship of spore and pollen assemblages in the Lower Kittaning Coal to overlying faunal facies. |
1966 |
| details |
Pennsylvanian |
|
Iowa |
Ravn,R.L. An introduction to the stratigraphic palynology of the Cherokee Group (Pennsylvanian) coals of Iowa. |
1979 |
| details |
Namurian B |
Westphalian A |
Iowa |
Ravn,R.L. et al. A Morrowan, (Upper Carboniferous), miospore flora from eastern Iowa, USA. |
1982 |
| details |
Morrowan |
Atokan |
Iowa |
Ravn,R.L. Palynostratigraphy of the Lower and Middle Pennsylvanian Coals of Iowa |
1986 |