| details |
Middle Jurassic |
|
USSR(Ukrainian SSR) |
Semenova,E.V. Palynological characteristic of Jurassic deposits of the North-Western Pary of the Donetsk Basin |
1966 |
| details |
Early Triassic |
|
USSR(Siberia) |
Petrova,E.K. et al. Palynological characteristics of the Upper Paleozoic and the Lower Mesozoic deposits of Middle-Vilyui gas and condnsate-bearing field. (In: Mikrofossilii Drevneishikh Otlozhenii. T.F.Vozzhennikova and T.B.Timofeev, editors) |
1973 |
| original |
Carboniferous |
Late Jurassic |
USSR(Urals) |
Malyavkina,V.S. Spores and pollen from Triassic deposits of the West Siberian Lowland. |
1964 |
| details |
Anisian |
|
USSR(Pre-Urals) |
Tverdokhlebov,V.P. et al. Age of Surakay graycolored deposits and the time-range of Bukobai Group. |
1976 |