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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 | Campanian | Maastrichtian | 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 | Campanian | Maastrichtian | USSR(Siberia) | Zaklinskaya,V.A. Late Cretaceous and Early Paleogene flora, based on palynological data. | 1970 |