| details |
Desmoinesian |
|
Illinois |
Schopf,J.M. Spores from the Herrin (No. 6) Coal Bed in Illinois. |
1938 |
| details |
Westphalian B |
|
Germany |
Schopf,J.M. et al. An annotated synopsis of Paleozoic fossil spores and the definition of generic groups. |
1944 |
| details |
Westphalian A |
Westphalian C |
Netherlands |
Dijkstra,S.J. et al. A monographic revision of Carboniferous megaspores with special consideration to South Limburg, (Netherlands). |
1946 |
| details |
Allegheny |
|
West Virginia |
Cross,A.T. Spore floras of the Pennsylvanian of West Virginia and Kentucky |
1947 |
| details |
Allegheny |
|
Kentucky |
Cross,A.T. Spore floras of the Pennsylvanian of West Virginia and Kentucky |
1947 |
| details |
Westphalian B |
Westphalian C |
Czechoslovakia |
KalibovЎ,M. Megaspores of the Radnice Coal Measure zone of the Kladno-Rakovnik Coal Basin. |
1951 |
| details |
Westphalian B |
Westphalian C |
Czechoslovakia |
KalibovЎ,M. Megaspores of the Radnice Coal Measure zone of the Kladno-Rakovnik Coal Basin. |
1951 |
| details |
Namurian |
Westphalian C |
W.Germany(N.Rhine) |
Kremp,G.O.W. Spore associations and microfauna horizons in the Carboniferous of the Ruhr. |
1952 |
| details |
Westphalian A |
Westphalian D |
Turkey |
Dijkstra,S.J. Megaspqres of the Turkish Carboniferous and their stratigraphical value. |
1952 |
| details |
Westphalian |
|
Netherlands |
Dijkstra,S.J. The stratigraphical value of megaspores |
1952 |
| details |
Westphalian |
|
Turkey |
Dijkstra,S.J. The stratigraphical value of megaspores |
1952 |
| details |
Westphalian |
|
Poland |
Dijkstra,S.J. The stratigraphical value of megaspores |
1952 |
| details |
Westphalian A |
Westphalian C |
England |
Chaloner,W.G. On the megaspores of four species of Lepidostrobus |
1953 |
| details |
Westphalian B |
Westphalian C |
England |
Chaloner,W.G. On the megaspores of four species of Lepidostrobus |
1953 |
| details |
Westphalian B |
Westphalian C |
France |
Chaloner,W.G. On the megaspores of four species of Lepidostrobus |
1953 |
| details |
Westphalian A |
Westphalian C |
Michigan |
Chaloner,W.G. On the megaspores of four species of Lepidostrobus |
1953 |
| details |
Westphalian A |
Westphalian C |
Scotland(Lanark) |
Chaloner,W.G. On the megaspores of four species of Lepidostrobus |
1953 |