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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 | Hauterivian | Russia(Siberia) | Beizel,A.L. et al. New geological data and zoning of the Neocomian key section on Yatriya River (Polar Transuralia) according to Belemnites, dinocysts and palynomorphs | 1997 | |
| details | Late Santonian | Early Campanian | Russia(Taymyr) | Khomentovskii,O.V. et al. Santonian-Campanian boundary in northern Siberia | 1999 |