| details |
Permian |
|
USSR(Permsk Nat.Okrug) |
Medvedeva,A.M. Palynological investigation of Petroleum |
1978 |
| details |
Artinskian |
|
USSR(Krasnoyarsk Kray) |
Betekhtina,O.A. et al. Palaeontological characteristics of the regional horizons of the Kuznetz Basin. (In: The Upper Paleozoic of the Angara Basins;Fauna and Flora. I.T. Zhuravleva and V.I.Ilina, editor) |
1988 |
| details |
Artinskian |
|
USSR(Siberia) |
Dryagina,L.L. Biostratigraphic analysis of some groups of organic remains; evolutionary stages and methods of stratigraphic utilization; spores and pollen. (In: The Upper Paleozoic of the Angara Basins;Fauna and Flora. I.T. Zhuravleva and V.I.Ilina, editor) |
1988 |