| details |
Early Guadalupian |
|
Oklahoma |
Clapham,W.B. Permian miospores from the Flowerpot Formation of western Oklahoma |
1970 |
| details |
Early Guadalupian |
|
Oklahoma |
Clapham,W.B. Nature and paleogeography of Middle Permian floras of Oklahoma from their pollen record |
1970 |
| details |
Permian |
|
Oklahoma |
Hart,G.F. The systematics and distribution of Permian miospores. |
1965 |
| details |
Kungurian |
|
North America |
Hart,G.F. A review of the classification and distribution of the Permian miospore-Disaccate Striatiti. |
1964 |
| details |
Guadalupian |
|
Oklahoma |
Hart,G.F. A review of the classification and distribution of the Permian miospore-Disaccate Striatiti. |
1964 |