| original |
Desmoinesian |
|
Illinois |
Peppers,R.A. Correlation and palynology of coals in the Carbondale and Spoon Formations (Pennsylvanian) of the northeastern part of the Illinois Basin. |
1970 |
| details |
Early Virgilian |
Early Wolfcampian |
Texas |
Gupta,S. Miofloral succession and interpretation of the Base of the Permian system in the eastern Shelf of North Central Texas, USA. |
1977 |
| details |
Westphalian D |
|
Indiana |
Eggert,D.L. et al. Environments of deposition coal balls, Cuticular Shale and Grey-Shale floras in Fountain and Parke Counties, Indiana. |
1982 |
| details |
Late Carboniferous |
Permian |
China(N.China) |
Gao,L. et al. Spores and pollen. Carboniferous and Permian spores and pollen. (In: Paleontological Atlas of North China.III.Micropaleontological Volume.) |
1984 |
| details |
Desmoinesian |
|
Illinois |
Ravn,R.L. Palynostratigraphy of the Lower and Middle Pennsylvanian Coals of Iowa |
1986 |
| details |
Early Permian |
|
China(Shanxi) |
Zheng,G. et al. Carboniferous-Permian sporopollen assemblages of Jizhong Region, Hebei, China. |
2000 |
| details |
Early Permian |
|
China(Shandong) |
Zheng,G. et al. Carboniferous-Permian sporopollen assemblages of Jizhong Region, Hebei, China. |
2000 |