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 Aptyxiella quenstedti Geiger, 1901 Plate 1: fig. 7 part v1858 - Nerinea grandis nuda - Quenstedt: 766, pl. 94, fig. 4 (non fig. 5). part v1881-1884 - Nerinea grandis nuda - Quenstedt: p. 553, pl. 207, fig. 2 (non fig. 1). *1901 - Aptyxiella quenstedti sp. nov. - Geiger: p. 278, pl. 11, fig. 1. 1997 - Aptyxiella quenstedti Geiger, 1901 - Haegele : 133, fig. p. 133 lower right. Material. One specimen from Nattheim ( Tuebingen : Quenstedt collection). Description. The specimen illustrated by Quenstedt (1881-1884 : pl. 207, fig. 2) is a 29 mm high fragment consisting of three whorls. Geiger (1901 , pl. 11, fig. 1; copied herein in Plate 1 : fig. 7) used another, better preserved specimen. In Quenstedt's (1881-1884) specimen, approximately half of shell wall is broken off. The flanks are straight. The suture is slightly impressed. No ornament is visible. The base is anomphalous. The aperture has a weak columellar plait. Relationships. Nerinea grandis nuda Quenstedt, 1858 is much larger and has seemingly no plaits. The very similar and maybe identical Aptyxiella planata (Quenstedt) lacks a columellar plait. Haegele (1997) also claimed that Aptyxiella quenstedti has a more convex whorl face, but the specimen illustrated by Geiger (1901) does not show this.