| original |
Middle Pennsylvanian |
Late Pennsylvanian |
Illinois |
Kosanke,R.M. Pennsylvanian spores of Illinois and their use in correlation. |
1950 |
| original |
Nd |
|
Nd |
Frederiksen,N.O. Sporomorphs of the Brookville Seam near Brookville, Pennsylvania. |
1961 |
| details |
Chesterian |
Westphalian |
Sinai |
Saad,S.I. Pollen and spores recently discovered in the Coals of the Sinai Region. 2.Um Bogma District. |
1965 |
| details |
Early Pennsylvanian |
Middle Pennsylvanian |
Egypt |
Sultan,I.Z. Carboniferous miospores from a Black Shales Unit in the Gulf of Suez, Egypt. |
1977 |