| original |
Late Permian |
|
USSR(Chuvash ASSR) |
Dryagina,L.L. New Late Permian spores of the Kuznetski Basin. (In: Contributions to the Phytostratigraphy of the Upper Permian Sediments of the Altae-Sayan Mining Regions) |
1962 |
| original |
Late Permian |
|
USSR(Kemerovskaya) |
Dryagina,L.L. Spore-pollen complexes, (Lower Permian - Upper Permian). (In: Biostratigraphy of the Paleozoic of the Sayano-Altai Mining Region.Vol. III. Upper Paleozoic. L.L.Khalfina, editor) |
1962 |
| details |
Tatarian |
|
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 |