| original |
Cenomanian |
Coniacian |
Wyoming |
Upshaw,C.F. Palynology of the Frontier Formation, northwestern Wind River Basin, Wyoming. |
1959 |
| original |
Tremadocian |
|
Algeria |
Deunff,J. et al. Palynoplanktonic correlation in the Cambro-Ordovician of the Sahara |
1961 |
| original |
Late Devonian |
Early Carboniferous |
USSR(Yakut ASSR) |
Mikhailova,T.E. et al. Palynologic characteristics of Devonian - Lower Carboniferous deposits of the Kempendyai structural prospecting Borhole Section. |
1966 |
| original |
Carboniferous |
|
Poland |
Jachowicz,A. Flora of the Carboniferous:Microflora |
1972 |