| details |
Late Visean |
Early Namurian A |
Poland |
Kmiecik,H. et al. Phyto and palynostratigraphy of the Carboniferous of the Warsaw area |
1979 |
| details |
Namurian B |
Westphalian A |
Iowa |
Ravn,R.L. et al. A Morrowan, (Upper Carboniferous), miospore flora from eastern Iowa, USA. |
1982 |
| details |
Morrowan |
|
Iowa |
Ravn,R.L. Palynostratigraphy of the Lower and Middle Pennsylvanian Coals of Iowa |
1986 |
| details |
Westphalian |
Stephanian |
Romania |
Visarion,A. On the presence of a Westphalian-Stephanian microflora in the western part of the Sirinia zone (Streniac Brook-Miclau Brook) |
1986 |