| details |
Ladinian |
Carnian |
USSR(Urals) |
Tuzhikova,V.I. Lithology and stratigraphy of the Lower Mesozoic deposits of the Urals. (In: The history of the Lower Mesozoic accumulation of Coals in the Urals) |
1973 |
| details |
Nd |
|
Nd |
Varyukhina,L.M. Spores and pollen of the red-colored coal-bearing Permian and Triassic sediments of the northeastern part of European SSSR. |
1971 |
| details |
Early Liassic |
|
USSR(Kazakh SSR) |
Bunina,M.V. Lithology and facies in the Lower Mesozoic Coal Measures of Turgai Depression |
1969 |
| details |
Early Triassic |
|
USSR(Arkhangelsk Oblast) |
Molin,V.A. Vetluzhsk series |
1969 |
| details |
Middle Triassic |
|
USSR(Kazakh SSR) |
Andreeva,E.M. et al. Palaeopalynology. (Three Volumes: Volume I: Methods. Volume II: Complexes of palynomorphs of the Precambrian-Holocene of the USSR. Volume III: Figures and Plates. Editor-I.M. Pokrovskaya) |
1966 |