| original |
Early Namurian A |
|
Poland |
Jachowicz,A. Spore associations and stratigraphical position of Coal Seam at Kolzlowa Gora, (Upper Silesian Basin). |
1959 |
| details |
Late Westphalian C |
|
Belgium |
Pi©rart,P. Palynology and stratigraphy of the Neeroeteren Zone, (Upper Westphalian C), in the Belgian Kempen. |
1958 |
| details |
Middle Desmoinesian |
|
Oklahoma |
Wilson,L.R. et al. Plant microfossils in the Cabaniss Coals of Oklahoma and Kansas |
1958 |
| details |
Middle Desmoinesian |
|
Kansas |
Wilson,L.R. et al. Plant microfossils in the Cabaniss Coals of Oklahoma and Kansas |
1958 |
| details |
Chesterian |
|
Canada(Alberta) |
Halbertsma,H.L. Nomenclature of Upper Carboniferous and Permian strata in the subsurface of the Peace River area |
1957 |
| details |
Springerian |
Missourian |
North America |
Hoffmeister,W.S. et al. Geologic range of Paleozoic plant spores in North America |
1955 |
| details |
Desmoinesian |
|
Indiana |
Guennel,G.K. Fossil spores of the Alleghenian Coals in Indiana |
1952 |