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Radoslav Biskupič

  • Biodiversity Journal, 14 (4): 0749-0764

    Radoslav Biskupič
    New records and paleoecology of the Middle Miocene (Badenian) Costellariidae MacDonald, 1860 (Gastropoda Neogastropoda) from Devínska Nová Ves (Vienna Basin, Slovakia)
    https://doi.org/10.31396/Biodiv.Jour.2023.14.4.749.764

    ABSTRACT
    New Middle Miocene Costellariidae gastropods recorded from the eastern marginal part of the Vienna Basin (Central Paratethys) are reported. The conchological material was retrieved from the marine sediments of the Upper Badenian (Early Serravallian) Studienka Formation exposed at three localities situated in the vicinity of Devínska Nová Ves, a borough of the city of Bratislava, Slovakia, namely from Brickyard, Bačnegovice, and Útočnice. A total of six species ascribed to the genera Bellardithala Harzhauser et Landau, 2021, Ebenomitra Monterosato, 1917, and Pusia Swainson, 1840 are recognised, of which Ebenomitra pseudopyramidella (Boettger, 1906) is recorded for the first time from Slovakia. An enigmatic Bellardithala, originating from the locality Brickyard, is re-examined and more comprehensively discussed but is left in open nomenclature. Paleoecological evaluation of the studied Costellariidae assemblages and complex geographic and stratigraphic distribution of presented species in Slovakia are given.

  • Biodiversity Journal, 14 (2): 0315-0324

    Radoslav Biskupič
    “Clavatula” pettkoi n. sp. (Neogastropoda Clavatulidae) from the Badenian (Miocene) deep-water marine clays of the Studienka Formation (Vienna Basin, Central Paratethys)
    https://doi.org/10.31396/Biodiv.Jour.2023.14.2.315.324
    https://www.zoobank.org/3EA7B7A6-3B42-47DD-943B-F9202BDD8824

    ABSTRACT
    A fossil shell belonging to the gastropod family Clavatulidae Gray, 1853, previously recognised as Clavatula (Clavatula) neudorfensis (F. Schaffer, 1897), stored in the collections of the Natural History Museum of Slovak National Museum, Bratislava, Slovakia, is revised. The specimen was found in the upper Badenian (middle Miocene) deep-water marine clays of the Studienka Formation exposed in a former clay pit near Devínska Nová Ves, Bratislava, located in the eastern part of the Vienna Basin (Slovakia), which represented the western margin of the Miocene Central Paratethys Sea. As the results suggest, this specimen is not conspecific with Megaclavatula neudorfensis (Schaffer, 1898), also known from this locality and does not agree with any other Neogene Clavatulidae species. The shell bears peculiar morphological features that allow it to describe as a new species, “Clavatula” pettkoi n. sp. The species is provisionally placed in “Clavatula” sensu lato based on conchological characters.