| original |
Westphalian C |
|
W.Germany(N.Rhine) |
Potonie,R. et al. Spore forms in the Agir and Bismarck Seams of the Ruhr Basin. |
1932 |
| details |
Westphalian C |
|
Germany(Rhineland) |
Ibrahim,A.C. Spore forms of the Agir horizon of the Ruhr Basin. |
1933 |
| details |
Nd |
|
Nd |
Winslow,M.R. Upper Mississippian and Pennsylvanian megaspores and other plant microfossils from Illinois. |
1959 |
| details |
Permian |
|
Turkey |
Yahsiman,K. et al. Permian megaspores from Hazru (Diyarbakir). |
1959 |
| details |
Late Morrowan |
|
Oklahoma |
Felix,C.J. et al. An American occurrence of Spencerisporites. |
1959 |
| details |
Late Morrowan |
|
Texas |
Felix,C.J. et al. An American occurrence of Spencerisporites. |
1959 |