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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 Moldavian Platform represents the south-west margin of the East European Platform. To the south, the Moldavian Platform is bordered by the Scythian Platform and to the west by the Carpathians. The Moldavian Platform encloses many geological and paleontological sites of high scientific value, being well known for the Middle Miocene wide exposures, represented by the Paratethys stage Sarmatian. In this study, we present the geological and paleontological heritage of 6 natural reserves from the Moldavian Platform...