original |
Hauterivian |
|
USSR(Kazakh SSR) |
Bolkhovitina,N.A. Spore and pollen characteristics of Cretaceous layers in the Central Regions of the USSR. |
1953 |
original |
Aptian |
|
USSR(Kazakh SSR) |
Bolkhovitina,N.A. Spore and pollen characteristics of Cretaceous layers in the Central Regions of the USSR. |
1953 |
original |
Late Albian |
|
USSR(Kazakh SSR) |
Bolkhovitina,N.A. Spore and pollen characteristics of Cretaceous layers in the Central Regions of the USSR. |
1953 |
original |
Albian |
Cenomanian |
USSR |
Bolkhovitina,N.A. Spore and pollen characteristics of Cretaceous layers in the Central Regions of the USSR. |
1953 |