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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 | Early Aptian | Early Albian | USSR(Cis-Caucasus) | Yegoyan,V.L. et al. Phytoplanktonic microfossils as a criterion for stratigraphic subdivision of the Mesozoic-Cenozoic sedimentary cover of the western Caucasus and Cisaucasia. | 1977 |
| details | Late Ryazanian | Norway | …rhus,N. et al. Biostratigraphy of a Lower Cretaceous section from Sklinnabanken, Norway, with some comments on the Andoya exposure | 1986 |