| details |
Middle Pennsylvanian |
|
Illinois |
Kosanke,R.M. Pennsylvanian spores of Illinois and their use in correlation. |
1950 |
| details |
Early Carboniferous |
|
Canada(NWT,Mackenzie) |
Hacquebard,P.A. Lower Carboniferous spore assemblage in Coal from the South Nahanni River area in Northwestern Canada. |
1955 |
| details |
Westphalian |
|
Germany |
Potonie,R. The biology of Carboniferous spores |
1955 |
| details |
Chesterian |
|
Canada(Alberta) |
Halbertsma,H.L. Nomenclature of Upper Carboniferous and Permian strata in the subsurface of the Peace River area |
1957 |
| details |
Carboniferous |
|
W.Germany(N.Rhine) |
Potonie,R. Hypothesising a spore stratigraphy in bituminous coal layers. (In: Handbook of the Microscope in Technology. H.Freund) |
1958 |
| details |
Early Permian |
|
Australia(W.Australia) |
Playford,G. Permian stratigraphy of the Woolaga Creek area, Mingenew District, Western Australia. |
1959 |
| details |
Permian |
|
Congo |
Pi©rart,P. Contribution to the study of the spores and pollen of the Glossopteris flora contained in the Coals of Luena (Katanga). |
1959 |
| details |
Late Visean |
Middle Westphalian C |
United Kingdom |
Butterworth,M.A. et al. Microspore distribution in the coalfields of Britain |
1960 |
| details |
Middle Pennsylvanian |
|
Oklahoma |
Higgins,M.J. Stratigraphic position of the Coal Seam near Porter, Wagoner County, Oklahoma. |
1961 |
| details |
Namurian |
|
Romania |
Venkatachala,B.S. et al. Microfloristic studies on the Paleozoic of the Moesian Platform. On the presence of the Carboniferous formation in the foundation of the Calareti zone. |
1962 |
| details |
Carboniferous |
|
Pennsylvania |
Clendening,J.A. et al. Characteristic small spores of the Pittsburgh Coal in West Virginia and Pennsylvania |
1963 |
| details |
Carboniferous |
|
West Virginia |
Clendening,J.A. et al. Characteristic small spores of the Pittsburgh Coal in West Virginia and Pennsylvania |
1963 |
| details |
Pennsylvanian |
|
West Virginia |
Clendening,J.A. et al. Paleobotany in West Virginia |
1963 |
| details |
Stephanian C |
|
France(Aveyron) |
Doubinger,J. Palynologic investigations of Stephanian Coals of Decazeville (France). |
1964 |
| details |
Late Pennsylvanian |
|
West Virginia |
Clendening,J.A. et al. Characteristic small spores of the Pittsburgh Coal in West Virginia and Pennsylvania. |
1964 |
| details |
Late Pennsylvanian |
|
Pennsylvania |
Clendening,J.A. et al. Characteristic small spores of the Pittsburgh Coal in West Virginia and Pennsylvania. |
1964 |
| details |
Early Stephanian |
|
Czechoslovakia |
KalibovЎ-KaiserovЎ,M. Palynological investigations of the Lower Nevren Seam (Lower Stephanian) in the northern part of the Plzen Carboniferous Coal-Bsin. |
1964 |