| original |
Springerian |
|
Oklahoma |
Felix,C.J. et al. Palynology of the Springer Formation of southern Oklahoma, USA. |
1967 |
| details |
Pendleian |
|
Arkansas |
Owens,B. et al. Late Mississippian - Early Pennsylvanian miospore assemblages from northern Arkansas. (In: Biostratigraphy. P.K.Sutherland and W.L.Manger, editors) |
1984 |
| details |
Early Pennsylvanian |
|
Kentucky |
Mickle,J.E. Ankyropteris from the Pennsylvanian of eastern Kentucky. |
1980 |
| details |
Bolsovian |
Westphalian D |
Czech Republic |
Bek,J. et al. Senftenbergia plumosa (Artis) emend. and its spores from the Carboniferous of the Kladno and Pilsen Basins, Bohemian Massif, and some related and synonymous taxa. |
2001 |