| details |
Chesterian |
|
Iowa |
Urban,J.B. Palynology and the Independence Shale of Iowa. |
1971 |
| details |
Pleistocene |
|
USSR(Karelian ASSR) |
Soumalainen,T. et al. The Pre-Quaternary microfossil inventory of the Pleistocene Clays Beds at Kaljala, Karelian Isthmus |
1970 |
| details |
Carboniferous |
Permian |
Finland |
Suomalainen,T. et al. Pre-Quaternary microfossils in Clay occurrences of Kaljala on the Karelian Isthmus. |
1970 |
| details |
Visean |
|
Canada(NWT) |
Barss,M.S. Carboniferous and Permian spores of Canada. |
1967 |
| details |
Chesterian |
|
Canada(NWT) |
Sullivan,H.J. Palynological evidence concerning the regional differentiation of Upper Mississippian floras |
1965 |
| details |
Tournaisian |
Namurian |
Spitsbergen |
Bharadwaj,D.C. et al. Spore assemblage out of a Lower Carboniferous shale from Spitzbergen. |
1961 |
| details |
Mississippian |
|
Canada(NWT) |
Potonie,R. Synopsis of the genera of the sporae dispersae. Part 3 |
1960 |
| original |
Late Mississippian |
Namurian A |
Canada(NWT,Mackenzie) |
Hacquebard,P.A. et al. A Carboniferous spore assemblage, in coal from the South Nahanni River area, Northwest Territories. |
1957 |