Late Jurassic (Upper Kimmeridgian) Heterobranchia (Gastropoda) of the coral-facies of Saal near Kelheim and the viciniy of Nattheim (Germany) Author Gruendel, Joachim Institut fuer Geowissenschaften, Fachrichtung Palaeontologie, Freie Universitaet Berlin, Malteserstrasse 74 - 100, 12249 Berlin, Germany joachim.gruendel@lingua-pura.de Author Keupp, Helmut Institut fuer Geowissenschaften, Fachrichtung Palaeontologie, Freie Universitaet Berlin, Malteserstrasse 74 - 100, 12249 Berlin, Germany Author Lang, Fritz Drosselweg 16, 96114 Hirschaid, Germany Author Nuetzel, Alexander https://orcid.org/0000-0002-8852-7688 SNSB-Bayerische Staatssammlung fuer Palaeontologie und Geologie, Richard-Wagner-Str. 10, 80333 Muenchen, Germany & Department of Earth and Environmental Sciences, Paleontology and Geobiology, Ludwig-Maximilians-Universitaet Muenchen, Richard-Wagner-Str. 10, 80333 Muenchen, Germany text Zitteliana 2022 2022-12-12 96 179 221 http://dx.doi.org/10.3897/zitteliana.96.e84187 journal article http://dx.doi.org/10.3897/zitteliana.96.e84187 2747-8106-96-179 35B619086E6548B09A177281C2253391 FE0861D71BB454999EE6637C0D9B2B0C Genus Bactroptyxis Cossmann, 1896 Type species. Nerinea implicata d'Orbigny , 1851; Bathonian; France.