| original |
Tatarian |
Middle Keuper |
USSR(Urals) |
Varyukhina,L.M. Some new species of spores and pollen from the Permian and Triassic of the northern Pre-Urals. (In: Stratigraphy and Paleontology of the Northeastern part of European USSR) |
1966 |
| original |
Keuper |
|
USSR(Pre-Urals) |
Varyukhina,L.M. Some new species of spores and pollen of the Permian and Triassic of northern Priural. |
1966 |
| details |
Early Triassic |
Middle Triassic |
USSR(Komi ASSR) |
Chalyshev,V.I. et al. Biostratigraphy of the Triassic of the Pechorsk District. |
1966 |
| details |
Nd |
|
Nd |
Boersma,M. et al. Triassic palynomorphs, index to genera and species |
1987 |