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From
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To
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Geolocation
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Author - title
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Year
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| details | Late Oligocene | Miocene | Poland | Ziembinska,M. et al. Stratigraphy and correlation of Brown Coal Beds in the Scinawa deposit on the basis of spore-pollen analysis. | 1966 |
| details | Late Eocene | Early Oligocene | USSR(Ukrainian SSR) | Zosimovich,V.Y. et al. The boundary between Upper Eocene and Oligocene in the Kiev Dnieper area as based on palynological data. | 1979 |