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From
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Geolocation
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Author - title
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Year
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| details | Coniacian | Santonian | USSR(Siberia) | Markova,L.G. et al. To the historical devolopment of the Late Cretaceous flora of the southeastern part of the West Siberian Platform. | 1983 |
| details | 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 |