| details |
Aptian |
|
USSR(Taymyr Nat.Okrug) |
Chirva,S.A. et al. Structure and correlation of continental Early Cretaceous Massive of northern Siberia. (In: Stratigraphy of the Lower Cretaceous deposits in the Petroleum and Gas bearing Regions of the USSR. M.S.Mesezhnikov and A.I.Kirichkova) |
1979 |
| original |
Middle Jurassic |
Early Cretaceous |
USSR(Siberia) |
Bolkhovitina,N.A. Atlas of spores and pollen from Jurassic and Lower Cretaceous deposits of the Vilyuysk Basin. |
1956 |
| details |
Middle Jurassic |
|
USSR(Yakut ASSR) |
Bolkhovitina,N.A. Spore-pollen complexes from the Mesozoic deposits of the Vilyuy Basin and their importance for stratigraphy. |
1959 |