THE OSTRACOD GENUS NIPPONOCYTHERE ISHIZAKI, 1971 FROM THE MIDDLE MIOCENE OF THE FORE-CARPATHIAN DEPRESSION, CENTRAL PARATETHYS; ITS ORIGIN AND PALEOENVIRONMENT
Published: Feb 2003
Pages: 9 - 20
Authors: JANINA SZCZECHURA, GIUSEPPE AIELLO
Abstract: Two new ostracod species, belonging to the loxoconchid genus Nipponocythere Ishizaki, 1971, i.e. N. karsyensis sp. nov. and N. silesiensis sp. nov., are described from the Middle Miocene (Badenian) of the Fore-Carpathian Depression, Central Paratethys. We consider them "exotic" forms, that is rare and previously unknown from the Badenian of the Paratethys. Their occurrence in the Middle Miocene of the Polish part of the Central Paratethys is thought to prove oceanic water influence into the northernmost parts of the Fore-Carpathian Depression (basins). The unusual morphometric features of these Nipponocythere species and of their associated "exotic" ostracods, in the Upper Badenian of the Upper Silesia, is presumed to be due to a paleoenvironment rich in food and undersaturated in CaCO3 and/or O2.
Keywords: Middle Miocene, Fore-Carpathian Depression, paleogeography, paleoecology, Ostracoda
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