Late Jurassic (Upper Kimmeridgian) Heterobranchia (Gastropoda) of the coral-facies of Saal near Kelheim and the viciniy of Nattheim (Germany)

(1–3) Ptygmatis clio (d’Orbigny, 1852). (1–2) SNSB-BSPG 2021 XV 59, Saal (collection Lang); (1) section of fragment, height 21 mm; (2) detail, height 3.7 mm. (3) SNSB-BSPG 2021 XV 60, Saal (collection Lang), lateral view, height 108 mm. (4) Ptygmatis ? polyspira (Quenstedt, 1881–1884), holotype, collection University Tübingen (collection Quenstedt); Nattheim, lateral view, height 32 mm (original to Quenstedt 1881–1884, pl. 207, fig. 3. (11–12) Bactroptyxis teres (Münster in Goldfuss, 1844), collection Sauerborn, Nattheim area. (5–7) Ptygmatis ? ursicina (Thurmann in Thurmann & Étallon, 1861). (5–6) SNSB-BSPG 2021 XV 30, Saal (collection Lang); (5) last whorl with aperture, height 4 mm; (6) lateral view, height 9.5 mm. (7) SNSB-BSPG 2021 XV 31, Saal (collection Lang), aperture and ornament of base, width 2.5 mm.