| details |
Early Permian |
|
USSR(Kazakh SSR) |
Abramova,S.A. et al. The application of palynological investigation in the study of Salt Domes of the Precaspian |
1964 |
| details |
Kungurian |
|
USSR(Russian Platform) |
Abramova,S.A. et al. The problem of classifying forms of genus Vittatina, Lub., and forms with a ribbed body and air sacs. (Taxonomy and Methods for the Study of Fossl Pollen and Spores. V.N. Saks and A.F. Khlonova, editors) |
1964 |
| details |
Permian |
|
USSR(Buryat ASSR) |
Misnik,Y.F. et al. The Date for the Grounds of the age of the Chachin Strata, (Eastern Trans-Baikal) |
1966 |
| details |
Permian |
|
Nd |
Potonie,R. Main trends in the evolution of spores. |
1971 |