| details |
Middle Miocene |
Late Miocene |
USSR(Siberia) |
Kondinskaya,L.I. et al. Paleogene and Neogene palynocomplexes of the Ob and Irtysh Inter-Fluve in the West Siberian Plain and their stratigraphic significance. (In: The Cenozoic of Siberia and Northeastern USSR. V.S.Zykina.editor) |
1989 |
| details |
Pliocene |
Pleistocene |
USSR(Kazakh SSR) |
Akhmeteev,M.A. et al. Paleobotanical characterization of the reference section of Pliocene - Pleistocene sediments on the Tjorness Peninsula, Northern Iceland |
1975 |
| original |
Aptian |
Albian |
USSR(Rostov) |
Tabachnikova,I.P. Description of spores and pollen in Aptian-Albian deposits of the lower reaches of the Don River Basin and the Upper Chelbasa River. (In: Atlas of Lower Cretaceous spore-pollen complexes of some regions of USSR. I.M.Pokyovsksys and N.K.Stel'mak, editors) |
1964 |