| details |
Permian |
Triassic |
Africa |
Alpern,B. The stratigraphic palynology of the Stephanian and the Permian. |
1964 |
| details |
Ufimian |
|
USSR(European) |
Varyukhina,L.M. et al. Distribution of miospore complexes in dissimiliar deposits of the Upper Permian of the European part of the USSR and their correlation. (In: Stratigraphy and Correlation of Sediments Using Palynology Methods. Materials IV All-Union Palynological Conference. G.N.Papulov, editor) |
1983 |
| details |
Early Miocene |
|
Alaska |
Wahrhaftig,C. et al. The coal-bearing group in the Nenana Coalfield, Alaska. |
1969 |