| original |
Westphalian B |
|
Canada(Nova Scotia) |
Nicholeris,N. A plant microfossil investigation of three Nova Scotian Coal Seams |
1951 |
| original |
Sakmarian |
Early Artinskian |
India(Madhya Pradesh) |
Datta,A.K. Note on the Palaeontology of the sedimentary rocks in the Jhagrakhand area, Madhya Pradesh |
1957 |
| original |
Carboniferous |
|
Poland |
Jachowicz,A. Flora of the Carboniferous:Microflora |
1972 |
| original |
Early Cretaceous |
|
Oklahoma |
Wingate,F.H. Palynology of the Denton Shale (Lower Cretaceous), of southeastern Oklahoma. |
1974 |