Late Miocene land vertebrate faunas from the Eastern Paratethys area: Geochronology, Climate Evolution, Biotic record
The Late Miocene record of the continental vertebrates has a rich record in the north of the Eastern Paratethys. The territories of Romania, Moldova, Ukraine and Southern Russia provide continental and partially marine deposits rich in marine and terrestrial faunas. Previous extensive studies dated the ages of these deposits from the Sarmatian s.l. to Maeotian (11-6 Ma). In most cases, the ages of sites have broad ranges, significantly limiting paleobiogeographic, -geographic, -environmental, and -climatic reconstructions and analyses.
In the framework of a research project, our team reassessed the ages of the known sites and documented new ones from Moldova and Romania with vertebrate faunas using a broad range of multidisciplinary up-to-date methods of geological sciences. They include sedimentological description, magnetostratigraphy, micropaleontology, mollusc biostratigraphy, dating using autogenic nuclides and vertebrate paleontology. The sections represent mostly fluvial deposits of the Balta Formation, but they also include deposits from the shore and/or deltaic environments.
Our studies allowed to estimate more precisely the ages of the sites ranging from the Bessarabian to Maeotian ages. Further, the dating using autogenic nuclides allowed to establish a geochronological model for our sites independent from the marine biozones and mammalian MN units.
Details
Author
Davit* Vasilyan1, Sergei Lazarev2, Oleg Mandic3, Marius Stoica4, Damien Becker5, Michal Šujan6, Bogdan-Gabriel Răţoi7, Dumitru-Daniel Badea7, Andrain Delinschi8Institutionen
1Jurassica Museum, Porrentruy, Switzerland;Department of Geoscience, University of Fribourg; 2Department of Geoscience, University of Fribourg;Jurassica Museum, Porrentruy, Switzerland; 3Natural History Museum Vienna, Austria; 4Bucharest University, Faculty of Geology and Geophysics, Department of Geology, Bucharest, Romania; 5Jurassica Museum, Porrentruy, Switzerland; 6Department of Geology and Paleontology, Faculty of Natural Sciences, Comenius University, Bratislava, Slovakia; 7Faculty of Geography and Geology, Department of Geology, Alexandru Ioan Cuza University of Iași, Romania; 8Institute of Zoology, Moldova State University, Chișinău, Republic of MoldovaVeranstaltung
Geo4Göttingen 2025Datum
2025DOI
10.48380/0x9z-p397
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