Informace o publikaci
Paleontology and paleoecology of scaphopods in the Moravian part of the Carpathian Foredeep
| Autoři | |
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| Rok publikování | 2022 |
| Druh | Další prezentace na konferencích |
| Fakulta / Pracoviště MU | |
| Citace | |
| Popis | New research of mollusc fauna in the southern part of the Carpathian Foredeep in Moravia focusing predominantly on Lower Badenian sediments in the Boskovice Furrow brought a large number of Scaphopoda individuals, which together with other molluscs and other groups of animals enable to interpret certain components of the palaeoenvironment. In six main localities (Knínice-Kovářovice 2, Knínice-South, Šebetov-Čtvrtě, Sebranice 2, Šlapanice and Borač) in total over 500 individuals of scaphopods were found, from which eight species were determined. The individuals found are very often well preserved, in some cases with broken apex. In some shells predation traces of the species Oichnus sp. were obserwed. The found scaphopods, mainly from the area of Boskovice Furrow, can be divided into 2 basic groups. The first one consists of shallow-water associations with the dominant species Gadila ventricosa, and abundant gastropod Turritella badensis and coral Tarbelastrea reussiana. To a lesser extent, even the species Fustiaria jani and Fustiaria emersoni also occur in these localities. This association was found in sandy clay with frequent fragments of sandy or algal limestones (Sebranice 2), which also formed massive layers in the bottom (Knínice-Kovářovice 2). The interpreted sedimentation depth for this group was probably up to 50 m. The second group consists of deep-water species with the dominant Entalina tetragona. This species occurs together with the gastropods Turritella spirata, Ancillaria pusilla and Euspira helicina and bivalves Corbula gibba. This association of molluscs forms the dominant component of the fauna in most localities, often exceeding 90% of the individuals found. At the Šebetov-Čtvrtě locality, even the scaphopods Dentalium mutabile and gastropods Nassarius striatulus occure in this association. This deep-water association was found mostly in calcareous clays and the sedimentation depth for this group could exceed 100 m. |