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Our planet experienced many intervals of climate deterioration due to terrestrial causes, such as intensified volcanism and a very active tectonic regime or extraterrestrial causes. The later includes major meteorite impacts and change in the exosphere, mostly linked to the modification of sunlight amount leading to glaciations. The most sensitive organisms to climate changes are the marine planktonic ones, especially the coccoliths and dinoflagellates. This paper describes modification in the marine planktonic wo...

The Istria Basin, part of Western Black Sea (WBS) represents a major tectonic unit of the Romanian Black Sea shelf, with prolific hydrocarbon bearing structures. A significant amount of exploration and development wells were drilled on this basin’s northern edge. Core and cuttings data from 12 boreholes provide important details on this basin and the WBS stratigraphy, especially for the two of the main hydrocarbons bearing deposits Upper Cretaceous and, respectively, Eocene, on which we have achieved an age interp...