| original |
Early Cretaceous |
|
USSR(Ukrainian SSR) |
Malyavkina,V.S. Determination key of spores and pollen, Jurassic-Cretaceous |
1949 |
| original |
Early Cretaceous |
|
USSR(Omskaya Oblast) |
Malyavkina,V.S. Determination key of spores and pollen, Jurassic-Cretaceous |
1949 |
| original |
Early Cretaceous |
|
USSR(Omskaya Oblast) |
Malyavkina,V.S. Determination key of spores and pollen, Jurassic-Cretaceous |
1949 |
| details |
Hauterivian |
|
Mongolian Republic |
Malyavkina,V.S. Spores and pollen of the Lower Cretaceous of the eastern Gobi Depression. |
1958 |
| details |
Early Valanginian |
Middle Valanginian |
USSR(Far East) |
Chlonova,A.F. Palynological characteristics of Cretaceous Layers in Siberia and the Far East. |
1971 |