| original |
Late Permian |
|
USSR(Siberia) |
Dryagina,L.L. Some new species of Late Permian miospores from the Kuznets Basin. |
1971 |
| details |
Middle Permian |
|
USSR(Mordovian ASSR) |
Dryagina,L.L. Stratigraphy and palynological characterization of Paleozoic and Mesozoic deposits of the Kuznetsk Basin. Palynological characterization of the Kol'chuginskaya Series. |
1971 |
| details |
Late Permian |
|
USSR(European) |
Romanovskaya,G.M. et al. The boundary between the Permian and Triassic in Central Siberia (according to palynological data). (In: Palynology, Method and Stratigraphy) |
1973 |
| details |
Late Permian |
|
USSR(European) |
Dryagina,L.L. Palynological characteristics of the Rrunak key section of Upper Permian deposits of the Kolchuginsk Series in the Uznetsk Basin. |
1980 |
| 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 |
| details |
Late Permian |
|
Russia(Siberia) |
Papin,Y.S. et al. Lithologic and paleontologic boundary between Permian and Triassic in the Kuznetsk Basin. |
2000 |