| original |
Permian |
|
USSR(Kazakh SSR) |
Lyuber,A.A. et al. Atlas of microspores and pollen of the Paleozoic of the USSR. |
1941 |
| details |
Late Permian |
|
Mongolian Republic |
Bobrov,V.A. et al. On Upper Permian coal-bearing formations of Southern Mongolia. |
1957 |
| details |
Early 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) |
Hart,G.F. The systematics and distribution of Permian miospores. |
1965 |