Caryomphalus globatus ( Buvignier, 1843 ), 2024

Gründel, Joachim & Nützel, Alexander, 2024, Late Jurassic (Upper Kimmeridgian) gastropods from Saal near Kelheim (Germany, Bavaria), Zitteliana 98, pp. 19-72 : 19-72

Caryomphalus globatus ( Buvignier, 1843)

Plate 2 : figs 14, 15, Plate 3: fig. 1

2020 Caryomphalus globatus ( Buvignier, 1843) n. comb. – Gründel, Hostettler and Menkveld-Gfeller: 238, pl. 9, figs 11–15, pl. 10, figs 1–13 (here more synonymy and chresonymy).

Material.

3 specimens Saal, SNSB – BSPG 2016 XXI 1713 –1715; 1 specimen Saal, “ Fundort 1985, über Korallenstock, Sohle 2 ” (= locality 1985, above coral stock, level 2), SNSB – BSPG 2016 XXI 1716 .

Description.

Shell broadly turbiniform; illustrated specimen 18 mm high; mature whorls evenly convex with periphery at mid-whorl; sutures impressed; earliest preserved whorls have a pronounced edge below mid-whorl; whorl face between edge and adapical suture forms oblique ramp, vertical below edge; ramp initially with three, later with four spiral cords; shell below edge initially with one spiral cord, later with two spiral cords; edge becomes increasingly less pronounced and rounded on penultimate whorl; last whorl evenly rounded, markedly convex with periphery at mid-whorl and evenly rounded transition to moderately convex base; suture considerably deflected downward in last whorl so that another 4–5 spiral cords are exposed on penultimate whorl; 17 spiral cords are present on last whorl from suture to middle of base; all spiral cords are densely covered with small pustules; axial ribs absent, or only faint axial ribs on last third of last preserved whorl; base narrowly phaneromphalous; aperture circular.

Remarks.

The variability of this species could not be assessed, because only few specimens are at hand. The two best preserved specimens resemble those intermediate between variants 1 and 3 of Caryomphalus globatus sensu Gründel et al. (2020) .

Figures

Plate 2. (1, 2) Leptomaria sp., SNSB – BSPG 2016 XXI 1628, lateral and basal views, width 30 mm. (3–5) Leptomaria phacoides Zittel, 1873, SNSB – BSPG 2016 XXI 1629, lateral, apical and basal views, width 41 mm. (6) Leptomaria phacoides Zittel, 1873?, SNSB – BSPG 2016 XXI 1631, lateral view, height 22 mm. (7) Rimulopsis danuviensis sp. nov., holotype, SNSB – BSPG 2016 XXI 1653, collection Neubauer, lateral view, height 9 mm. (8) Rimulopsis danuviensis sp. nov., paratype, SNSB – BSPG 2016 XXI 1654, collection Neubauer, anterior view, height 7 mm. (9–11) Asperilla longispina (Rolle, 1861), SNSB – BSPG 2016 XXI 1661, lateral, apical and basal views, width including spines 24 mm. (12, 13) Falsataphrus? valfinense Loriol, in Loriol and Bourgeat (1886–1888), SNSB – BSPG 2016 XXI 1696, apical and lateral views, width 12 mm. (14, 15) Caryomphalus globatus (Buvignier, 1843), SNSB – BSPG 2016 XXI 1713, basal and lateral views, width 15 mm.

Plate 3. (1) Caryomphalus globatus (Buvignier, 1843), SNSB – BSPG 2016 XXI 1713, lateral view, width 15 mm. (2, 3) Caryomphalus sp., cf. concavus Gründel, Keupp & Lang, 2017, SNSB – BSPG 2017 XXI 1717, lateral and basal views, height 14 mm, width 12 mm. (4) Proconulus? sp. 1 sensu Gründel, Keupp and Lang (2017), SNSB – BSPG 2016 XXI 1718, lateral and basal views, height 11 mm. (5–7) Nododelphinula oblonga sp. nov., holotype, SNSB – BSPG 2016 XXI 1721, lateral views, apertural and abapertural, basal view, width 26 mm. (8–9) Nododelphinula oblonga sp. nov., paratype, SNSB – BSPG 2016 XXI 1930, collection Lang, shell in lateral and dorsal view, width 27 mm. (10–12) Serrettella gerberi (Gründel, Keupp & Lang, 2017), SNSB – BSPG 2016 XXI 1722, lateral, basal views and aperture, width 13 mm. (13) Serrettella gerberi (Gründel, Keupp & Lang, 2017), locality 1985, above coral stock, level 2, SNSB – BSPG 2016 XXI 1723, lateral view, width 9.5 mm. (14, 15) Heliacanthus sp. 1, SNSB – BSPG 2016 XXI 1726, abapertural and apertural lateral views, height 12 mm.