| original |
Rhaetian |
|
USSR(Ukrainian SSR) |
Semenova,E.V. Spore and pollen assemblages of deposits of the Jurassic and Triassic Boundary of the Don Basin. |
1970 |
| details |
Permian |
|
USSR(Ukrainian SSR) |
Semenova,E.V. Stratigraphy of the Upper Triassic Boundary in the North-West Part of the Don Basin. |
1979 |
| details |
Late Triassic |
|
USSR(Ukrainian SSR) |
Boersma,M. et al. Triassic palynomorphs, index to genera and species |
1987 |
| details |
Late Triassic |
|
Arctic Ocean(Barents Sea) |
Smirnova,S.B. et al. Possibilites of Triassic deposits correlations of Barents Sea and Precaspian. (In: Palynological material). (In: Stages and Zonation scale of the Boreal Mesozoic of the USSR. V.A.Solovev, editor) |
1989 |