| original |
Aalenian |
|
USSR(Ukrainian SSR) |
Semenova,E.V. Spore and pollen assemblages of deposits of the Jurassic and Triassic Boundary of the Don Basin. |
1970 |
| details |
Late Jurassic |
|
USSR(Far East) |
Shugaevskaya,O.V. et al. Spores and pollen from the coal sequence of the Bureyan Basin with reference to their stratigraphic significance. (In: Mikrofossilii Drevneishikh Otlozhenii. T.F.Vozzhennikova and T.B.Timofeev, editors) |
1973 |
| 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 |