| original |
Middle Oligocene |
|
USSR(WSL) |
Voitsel,Z.A. Juglandaceae. (In: Pyltsa i spory zapadnoi Sibiri, yura-paleotsen. S.R.Samoilovich and N.D.Mtchedlishvili, editors) |
1961 |
| details |
Late Oligocene |
Early Miocene |
USSR(Tomskaya Oblast) |
Kulkova,I.A. Spore and pollen assemblages of Tertiary deposits in the Tomsk Region of the Ob' Valley. (In: Taxonomy and Methods for the Study of Fossl Pollen and Spores. V.N. Saks and A.F. Khlonova, editors) |
1964 |
| details |
Chattian |
|
USSR(Tomskaya Oblast) |
Aleksandrova,L.V. Stratigraphy of Eocene to Lower Miocene deposits of Western Tomskaya Oblast, based on palynology. (In: Stratigraphy and Palynology of the Mesozoic and Cenozoic of Siberia. V.S.Volkova, editor) |
1979 |
| details |
Late Oligocene |
|
USSR(Siberia) |
Kolykhalov,Y.M. et al. Paleogene and Noegene deposits in the Southwest Chulym-Yenisei Basin. (In: The Cenozoic of Siberia and Northeastern USSR. V.S.Zykina.editor) |
1989 |