Late Jurassic (Upper Kimmeridgian) gastropods from Saal near Kelheim (Germany, Bavaria) Author Gründel, Joachim Institut für Geowissenschaften, Fachrichtung Paläontologie, Freie Universität Berlin, Malteserstraße 74 – 100, 12249 Berlin, Germany Author Nützel, Alexander 0000-0002-8852-7688 SNSB-Bayerische Staatssammlung für Paläontologie und Geologie, Richard-Wagner-Str. 10, 80333 München, Germany & Department of Earth and Environmental Sciences, Paleontology and Geobiology, Ludwig-Maximilians-Universität München, Richard-Wagner-Str. 10, 80333 München, Germany text Zitteliana 2024 2024-12-11 98 19 72 journal article 10.3897/zitteliana.98.e138605 9FB6F185-9EA1-48EB-A5C9-632BD52A8B6F Creniturbo gibbosus sp. nov. Plate 4: figs 12–15 Etymology. Latin gibbus – nodes; for the abapical row of large nodes. Holotype . SNSB – BSPG 2016 XXI 1738 (pl. 4, figs 14–15), collection Lang. Paratypes . 6 specimens from Saal ( 4 specimens collection Lang: SNSB–BSPG 2016 XXI 1739 –1742 , 2 specimens collection Sylla: SNSB–BSPG 2016 XXI 1743 –1744 ) Other material. A questionable specimen from Saal, collection Lang. Type locality and stratum. Upper Jurassic (Kimmeridgian) reefal limestones from the locality Saal near Kelheim, Lower Bavaria ( Gründel et al. 2015 , 2022 ). Diagnosis. Shell broadly trochiform, gyroscopic; whorl face slightly concave, with several weak spiral lirae; suture shallow, inconspicuous; edge at transition from whorl face to base with 10–13 large rounded nodes, visible slightly above suture in spire whorls; aperture has circular lumen; tongue-shaped callus covers center of base. Description. Only juvenile specimens at hand are relatively well-preserved; fully grown but poorly preserved specimens up to 16 mm wide; shell broadly trochiform, gyroscopic; whorl face slightly concave; edge at transition from whorl face to base with 10–13 large rounded nodes, visible slightly above suture in spire whorls; suture wavy due to nodes; whorl face covered with very faint spiral lirae (usually not visible due to preservation); it is not certain whether spiral lirae are also present on nodes; base slightly convex and set off from whorl face at an angle; growth lines on base opisthocyrt; spiral lirae probably also present on base, but obscured by preservation; aperture has circular lumen, slightly tapering adapically; tongue-shaped callus covers center of base. Remarks. Creniturbo dirce (d’Orbigny) , the type species and the only other species assigned to Creniturbo , has a double row of nodes at the basal edge and it has a much stronger spiral cords.