Parvulatopsis undetermined

Parvulatopsis? sp. Plate 5: fig. 16; Plate 6: figs 1, 2 Material. 5 juvenile specimens, SNSB – BSPG 2016 XXI 1759 –1763. Description. Shell-broadly turbiniform, egg-shaped, low-spired with rapidly increasing whorls; largest specimen 12 mm wide; smallest specimen 7 mm wide (best preserved one); whorls convex; suture sinks significantly during ontogeny; whorl face ornamented with 5 strong, knobby spiral cords; distances between adapical suture and adapical spiral cord as well as between this and the 2 nd spiral cord particularly wide; this portion of whorl face distinctly oblique; whorl face vertical between 2 nd and 3 rd spiral cords; 4–6 weak spiral cords without nodes between strong spiral cords; growth lines straight, prosocline from adapical suture to center of the base. Remarks. Juvenile specimens of Bipartopsis robustus Gründel et al., 2015 are smaller, the distances between the strong spiral cords are approximately the same but overall narrower than in Parvulatopsis? sp. and the adapical whorl face is not as oblique (in lateral view). Neritopsis jurensis Münster sensu Kuhn (1939) has 3 spiral cords at equal distances on the whorl face and strong axial ribs (according to the description, not visible in Kuhn’s (1939) illustration).