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Author - title
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| details | Tarkhanian | USSR(Ukrainian SSR) | Korallova,V.V. Spores and pollen typical of the Tarkhansk Region (Miocene, Crimea). | 1980 | |
| details | Thanetian | Bartonian | USSR(WSL) | Kulkova,I.A. Eocene plant microfossils of West Siberia. (In: Mikrofitofossilii i stratigrafiya Mezozzoya i Kainozoya Sibiri. S.B. Shatskiy, editor) | 1988 |