| original |
Middle Westphalian C |
Middle Westphalian C |
W.Germany(N.Rhine) |
Potonie,R. et al. The spore dispersae of the Rhur Carboniferous, their morphography and stratigraphy with reviews of species of other areas.Part 2 |
1956 |
| details |
Late Westphalian B |
Westphalian C |
W.Germany(N.Rhine) |
Grebe,H. The distribution of spores in the Upper Westphalian B and the Westphalian C of the Carboniferous of the Ruhr Asin. |
1962 |
| details |
Late Westphalian A |
Early Westphalian B |
W.Germany(Niedersachsen) |
Grebe,H. The Westphalian microflora of the Drilling Muensterland 1. |
1963 |