New data on the lower Badenian Scaphopoda from the southwestern part of the Carpathian Foredeep (Czech Republic)

Abstract

Scaphopods from the lower Badenian (Miocene) strata of the southwestern part of the Carpathian Foredeep in Moravia and its denudation relics on the Bohemian Massif are described, by means of fieldwork and re-examination of comparative material from the depositories of the Moravian Museum and the Department of Geological Sciences, Faculty of Science, MU Brno. In total, 8 species belonging to 6 genera were found. Occurrences of Entalina tetragona, Gadila ventricosa, Omniglypta jani, Fissidentalium badense, Antalis mutabilis, Antalis fossilis, and Paradentalium michelottii were confirmed and Omniglypta emersoni was newly recorded. Both the molluscs and lithofacies prove that the species inhabited two environments: infralittoral – Gadila ventricosa, Antalis fossilis, Omniglypta jani and Omniglypta emersoni; and circalittoral – Entalina tetragona and Antalis mutabilis. Fissidentalium badense was present in both circalittoral and infralittoral localities, so its greater depth range can be presumed. Paradentalium michelotii only occurred in the Borač locality, where circalittoral and infralittoral faunas were mixed; due to their slight abrasion, these shells were probably redeposited into the circalittoral environment from shallower (infralittoral) waters.