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Author - title
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Year
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| details | Kazanian | Tatarian | USSR(European) | Zoricheva,A.I. et al. Spore-pollen complexes of Upper Permian deposits of various Regions of the North of the European part of the USSR. | 1954 |
| details | 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 | |
| details | Miocene | USSR(Yakut ASSR) | Zyryanov,E.V. Palynological investigations of Miocene deposits on the new Siberian Archipelago (USSR). | 1992 |