| original |
Keuper |
|
USSR(WSL) |
Malyavkina,V.S. Spores and pollen from Triassic deposits of the West Siberian Lowland. |
1964 |
| original |
Keuper |
|
USSR(Trans-Urals) |
Malyavkina,V.S. Spores and pollen from Triassic deposits of the West Siberian Lowland. |
1964 |
| details |
Middle Triassic |
|
USSR(Komi ASSR) |
Lozovskiy,V.R. et al. More information on the age of the upper part of Triassic variegated deposits in the Luza, Vychegda and Mezen River Bsins. |
1968 |
| details |
Middle Keuper |
|
USSR |
Boersma,M. et al. Triassic palynomorphs, index to genera and species |
1987 |