original |
Maastrichtian |
|
USSR(Kazakh SSR) |
Romanovskaya,G.M. et al. Short description of spores and pollen from Upper Cretaceous deposits of the Turgay Basin. (In: Atlas of Upper Cretaceous, Paleocene and Eocene spore-pollen complexes of various Regions of the USSR). |
1960 |
original |
Early Triassic |
Late Triassic |
USSR(Komi ASSR) |
Chalyshev,V.I. et al. Biostratigraphy of the Triassic of the Pechorsk District. |
1966 |
original |
Triassic |
|
USSR(Komi ASSR) |
Chalyshev,V.I. et al. Biostratigraphy of the Triassic of the Pechorsk District. |
1966 |