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Geolocation
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Author - title
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Year
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| details | Late Cretaceous | USSR(Kazakh SSR) | Bykadorov,V.A. et al. Stratigraphy of Lower Paleogene deposits of eastern Kyzyl-Kum and South-West Karatai Foothills | 1974 | |
| details | Late Oligocene | USSR(WSL) | Merkulova,K.A. About the boundary of the Paleogene and Neogene in West Siberia. (In: Cenozoic Flora of Siberia According to Palynological Data. V.N.Sacks and V.S.Volkova, editors) | 1971 |