| link
|
From
|
To
|
Geolocation
|
Author - title
|
Year
|
|---|---|---|---|---|---|
| original | Early Oligocene | USSR(WSL) | Ushakova,M.V. et al. Lower Oligocene. (In: Stratigraphy of the Mesozoic and Cenozoic of the Western Siberian Lowlands. V.F.Kozyreva, editor) | 1957 | |
| original | Late Neogene | USSR(WSL) | Ivanova,E.A. et al. Pliocene. (In: Stratigraphy of the Mesozoic and Cenozoic of the Western Siberian Lowlands. V.F.Kozyreva, editor) | 1957 |