| details |
Permian |
|
USSR(Krasnoyarsk Kray) |
Dryagina,L.L. Spore and pollen assemblages in the Kolchugina series of the Kuznetz Basin and their possible use for correlation of stratigraphic sections and Coal Seams. (In: Late Paleozoic coal bearing Formations of Central Siberia.) |
1970 |
| details |
Kazanian |
|
USSR(Russian Platform) |
Dryagina,L.L. Description of organic remains; spores and pollen. (In: The Upper Paleozoic of the Angara Basins;Fauna and Flora. I.T. Zhuravleva and V.I.Ilina, editor) |
1988 |
| details |
Tatarian |
|
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 |