| details |
Valanginian |
|
USSR(Sverdlovskaya) |
Krutzsch,W. Atlas of Middle and Upper Tertiary dispersed spores and pollen as well as microplankton of northern Middle Europe. 2. Spores of the a Nothocerotaceae and Lycopodiaceae. |
1963 |
| details |
Aalenian |
Bajocian |
USSR(Ukrainian SSR) |
Semenova,E.V. Spore and pollen assemblages of deposits of the Jurassic and Triassic Boundary of the Don Basin. |
1970 |
| details |
Volgian |
Valanginian |
USSR(Khabarovsk Kray) |
Shugaevskaya,O.V. et al. Upper Mesozoic spore and pollen assemblages of southern Far East and their significance for stratigraphy. |
1974 |
| details |
Barremian |
|
USSR(Khabarovsk Kray) |
Shugaevskaya,O.V. et al. Upper Mesozoic spore and pollen assemblages of southern Far East and their significance for stratigraphy. |
1974 |
| details |
Toarcian |
|
USSR(Ukrainian SSR) |
Semenova,E.V. Stratigraphy of the Upper Triassic Boundary in the North-West Part of the Don Basin. |
1979 |