| details |
Early Triassic |
Late Triassic |
USSR(Komi ASSR) |
Chalyshev,V.I. et al. Biostratigraphy of the Triassic of the Pechorsk District. |
1966 |
| details |
Tatarian |
|
USSR(Taymyr Nat.Okrug) |
Dibner,A.F. A correlation of sections of the Permian deposits of the Byirang Mountains, according to spore pollen data. (In: Collected Articles on Geology and Oil-Gas Formations of the Arctic. B.V.Tkachenko, editor) |
1962 |
| details |
Late Permian |
|
USSR(Gorki) |
Dibner,A.F. On two spore-pollen complexes from deposits of the Pechora Series. (In: Scientific Notes, Palaeontology and biostratigraphy) |
1963 |
| details |
Induan |
|
USSR(Komi ASSR) |
Chalyshev,V.I. et al. The boundary of the Permian and Triassic in the Red-Colored deposits of northern Priural |
1965 |
| details |
Tatarian |
|
USSR(Komi ASSR) |
Hart,G.F. The biostratigraphy of Permian palynofloras. |
1970 |
| details |
Early Triassic |
|
USSR(Arkhangelsk Oblast) |
Molin,V.A. Vetluzhsk series |
1969 |