| details |
Liassic |
|
USSR(Urals) |
Faddeeva,I.Z. Palynological characteristics of Lower Mesozoic Coal deposits of Kazakhstan. (In: History of Lower Mesozoic Coal accumulation in Kazakhstan. Part 3) |
1963 |
| details |
Late Triassic |
|
USSR(Bashkir ASSR) |
Chalyshev,V.I. et al. New information of the age of the Coal deposits along Suraka Stream in Bashkiria |
1964 |
| details |
Early Triassic |
Late Triassic |
USSR(Komi ASSR) |
Chalyshev,V.I. et al. Biostratigraphy of the Triassic of the Pechorsk District. |
1966 |
| details |
Early Triassic |
Late Triassic |
USSR(Komi ASSR) |
Chalyshev,V.I. et al. Biostratigraphy of the Triassic of the Pechorsk District. |
1966 |