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Geolocation
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Author - title
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Year
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| details | Middle Hauterivian | USSR(Kazakh SSR) | Bolkhovitina,N.A. Spore and pollen characteristics of Cretaceous layers in the Central Regions of the USSR. | 1953 | |
| details | Aptian | USSR(Voronezh) | Bolkhovitina,N.A. Spore and pollen assemblage of the Aptian and Albian from the Central Russian Platform. | 1951 |