| details |
Early Miocene |
Middle Miocene |
Canada(Arctic) |
McNeil,D.H. et al. Sequence stratigraphy, biotic change, 87 Sr/86 Sr record, paleoclimatic history, and sedimentation rate change across a regional late Cenozoic unconformity in Arctic Canada. |
2001 |
| details |
Early Miocene |
|
Bangladesh |
Mannan,A Stratigraphic evolution and geochemistry of the Neogene Surma Group, Surma Basin, Sylhet, Bangladesh. |
2002 |
| details |
Early Oligocene |
|
Mississippi |
Frederiksen,N.O. Sporomorphs from the Jackson Group, (Upper Eocene) and adjacent strata of Mississippi and western Alabama. |
1980 |
| details |
Early Oligocene |
|
China(Kwangtung) |
Yu,J.-F. et al. Spore-pollen assemblages from the No.5 Driss-Well of Maoming, in the Maoming Basin, Guangdong and its geological age. |
1983 |
| details |
Early Oligocene |
|
USSR(Ukrainian SSR) |
Stotland,A.B. On the stratigraphic position of the Khar'kovsk series in the Kiev Pre-Dnieper |
1985 |
| 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 |
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 |
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 |
| details |
Early Oligocene |
|
Canada(British Columbia) |
Rouse,G.E. et al. Tertiary geology and palynology of the Quesnel area, British Columbia. |
1979 |
| details |
Early Oligocene |
Middle Oligocene |
USSR(Ukrainian SSR) |
Blank,M.Y. et al. On Upper Eocene and Oligocene Formations of the north-eastern Ukraine. |
1980 |
| details |
Early Oligocene |
Middle Oligocene |
USSR(Ukrainian SSR) |
Andreeva-Grigorovich,A.S. et al. The regional stratigraphical scheme of the Paleogene deposits, Ukrainian Carpathians. |
1985 |
| details |
Early Oligocene |
|
USSR(Siberia) |
Bobrova,S.I. et al. Cenozoic palynocomplexes in the Surgut-Ob Regions. (In: The Cenozoic of Siberia and Northeastern USSR. V.S.Zykina.editor) |
1989 |
| details |
Early Oligocene |
Middle Oligocene |
USSR(Tomskaya Oblast) |
Ilenok,L.L. et al. Correlation of Paleogene palynocomplexes in Southeastern West Siberia; Tomsk Oblast, Right Bank of the Ob River. (In: The Cenozoic of Siberia and Northeastern USSR. V.S.Zykina.editor) |
1989 |
| details |
Early Oligocene |
|
USSR(Pre-Baltic) |
Pokrovskaya,I.M. Eocene and Lower Oligocene spore-pollen complexes of the Prebaltic. (In: Atlas of Upper Cretaceous, Paleocene and of the USSR). |
1960 |
| details |
Early Oligocene |
Middle Oligocene |
USSR(Trans-Urals) |
Li,P.F. et al. Continental deposits of the Paleogene and Neogene of the eastern Slopes of the Urals and Trans-Urals |
1967 |
| details |
Early Oligocene |
Middle Oligocene |
USSR(Trans-Urals) |
Li,P.F. et al. Continental deposits of the Paleogene and Neogene of the eastern Slopes of the Urals and Trans-Urals |
1967 |
| details |
Early Oligocene |
Middle Oligocene |
USSR(Urals) |
Li,P.F. et al. Continental deposits of the Paleogene and Neogene of the eastern Slopes of the Urals and Trans-Urals |
1967 |