| link
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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 | Oligocene | USSR(Siberia) | Aleksandrova,A.N. et al. Palynoflora of Central Siberia at the Eocene-Oligocene Border | 1985 | |
| details | Paleogene | Russia(Novosibirsk) | 2004 |