| original |
Early Carboniferous |
|
USSR(Siberia) |
Kovalenko,L.A. Materials for the investigation of spores and pollen of the Ostroysk Formation of Kuznetsk Basin |
1956 |
| details |
Middle Carboniferous |
|
USSR(Krasnoyarsk Kray) |
Andreeva,E.M. Correlation of Upper Paleozoic coal-bearing deposits of Tungur, Minusinsk and Kuznets Basin on data of spore-pollen analysis. |
1960 |
| original |
Serpukhovian |
|
USSR(Siberia) |
Dryagina,L.L. Spores and pollen. (In: Biostratigraphy of the Paleozoic of the Sayano-Altai Mining Region.Vol. III. Upper Paleozoic. L.L.Khalfina, editor) |
1962 |