| details |
Early Permian |
|
Arizona |
Canright,J.E. et al. A Lower Permian flora from Promontory Butte, Central Arizona. |
1974 |
| details |
Pennsylvanian |
Permian |
Arizona |
Blazey,E.B. et al. The fossil flora of the Mogollon Rim, Arizona. |
1972 |
| details |
Carboniferous |
|
Nd |
Bharadwaj,D.C. et al. Suggestions for a morphological classification of sporae dispersae. |
1968 |
| details |
Early Permian |
|
Northern Hemisphere |
Bharadwaj,D.C. Sporological stratigraphy of the Permian Period. |
1966 |
| details |
Late Carboniferous |
Permian |
India |
Alpern,B. The stratigraphic palynology of the Stephanian and the Permian. |
1964 |
| details |
Stephanian |
Permian |
Nd |
Alpern,B. Stratigraphic palynology of the Stephanian and Permian. |
1964 |