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Migration of the dinoflagellate Galeacysta etrusca and its implications for the Messinian Salinity Crisis

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The First Occurrence of the cysts of the dinoflagellate Galeacysta etrusca is a well-known marker for the final stage of the Messinian Salinity Crisis in the Mediterranean Basin. This taxon originated from the Paratethys in the north and migrated in a stepwise fashion towards the Mediterranean. Using the First Occurrence of this species throughout different Paratethyan basins and the Mediterranean, we here update and revise its migration path. We show that G. etrusca rapidly migrated from the Pannonian Basin into the Dacian, Black Sea and Caspian basins after the Pontian flooding at ~ 6.1 Ma. During the final stage of the Messinian Salinity Crisis (5.37–5.33 Million year ago), G. etrusca simultaneously appeared in the Mediterranean, indicating a single phase of Paratethyan water spilling into the Mediterranean. We propose to reimpose this single brackish water dominated unit/phase at the end of the MSC as the only valid ‘Lago Mare’ event.
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Keywords: DINOCYST; GALEACYSTA ETRUSCA; LAGO MARE; MESSINIAN SALINITY CRISIS; PARATETHYS; PONTIAN

Document Type: Research Article

Publication date: 01 January 2018

This article was made available online on 09 November 2016 as a Fast Track article with title: "Migration of the dinoflagellate <i>Galeacysta etrusca</i> and its implications for the Messinian Salinity Crisis".

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  • Newsletters on Stratigraphy is an international, peer-reviewed journal with a focus on stratigraphic issues that are relevant for a broad geoscientific community. Papers published in Newsletters on Stratigraphy use (and ideally integrate) stratigraphic methodologies from a wide field of disciplines, including (but not limited to) biostratigraphy, chronostratigraphy, chemostratigraphy, and magnetostratigraphy.

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