| original |
Carboniferous |
|
Michigan |
Bartlett,H.H. Fossils of the Carboniferous Coal Pebbles of the Glacial Drift at Ann Arbor. |
1928 |
| details |
Late Pottsville |
Early Allegheny |
Michigan |
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 |
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 |
Late Pottsville |
|
West Virginia |
Cross,A.T. Spore floras of the Pennsylvanian of West Virginia and Kentucky |
1947 |
| details |
Late Pottsville |
|
Kentucky |
Cross,A.T. Spore floras of the Pennsylvanian of West Virginia and Kentucky |
1947 |
| details |
Carboniferous |
|
Michigan |
Arnold,C.A. An Introduction to Paleobotany. |
1947 |
| details |
Namurian |
Westphalian C |
England(Hampshire) |
Dijkstra,S.J. Carboniferous megaspores in Tertiary and Quaternary deposits of S.E.England. |
1950 |
| details |
Early Pennsylvanian |
|
Michigan |
Arnold,C.A. Megaspores from the Michigan Coal Basin. |
1950 |
| 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 |
Carboniferous |
|
Germany |
Horst,U. From the stratigraphy to fine-stratigraphy of Middle German Brown and Hard Coals. |
1952 |
| details |
Namurian |
Westphalian C |
Netherlands |
Dijkstra,S.J. The stratigraphical value of megaspores |
1952 |
| details |
Westphalian |
|
Turkey |
Dijkstra,S.J. The stratigraphical value of megaspores |
1952 |
| details |
Namurian |
Westphalian D |
Poland |
Dijkstra,S.J. The stratigraphical value of megaspores |
1952 |