| 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 |
| details |
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 |
Permian |
|
USSR(Siberia) |
Odintsova,M.M. et al. On the age of the Almazon Layers of the southern slope of the Anabarsk Anticline. |
1969 |