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 Sulcoactaeon sp. 1 Plate 21: figs 6, 7 Sulcoactaeon leblanci ?1997 - Sulcoactaeon leblanci (Loriol, 1875) - Haegele : 118, p. 118 below, 2nd fig. from left. Material. One specimen from Saal, collection Lang, SNSB-BSPG 2021 XV 101. Description. The shell is 4.2 mm high. It is slender oval. The last whorl is higher than the distinctly elevated and gradate spire. The whorl height increases rapidly by a downward shift of the suture. The sutures are accentuated by the presence of a narrow ramp. The whorl face is weakly convex. The spire whorls have a suprasutural spiral furrow. The transition from whorl face to the strongly convex base is evenly rounded. The base is entirely covered by spiral furrows (ca. 15). The furrows are widely distant to each other on the adapical portion of the base and become increasingly more narrowly spaced towards the abapical portion of the base. The aperture is elongated oval and acute posteriorly. The outer lip is convex. The inner lip consists of the parietal and columellar lips that meet at an obtuse angle. The columella terminates abruptly at the anterior margin of the aperture. Relationships. Sulcoactaeon leblanci (Loriol) sensu Haegele (1997) is probably conspecific. However, its spire whorls are lower, it has a subsutural spiral cord, and the last whorl is broader and has a more convex outline.