Purpuroidea lapierrea ( Buvignier, 1843 )

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

Purpuroidea lapierrea ( Buvignier, 1843)

Plate 10: figs 10, 11

1886–1888 Purpuroidea gracilis n. sp. – Loriol in Loriol and Bourgeat: 60, pl. 4, figs 2–3.

1893 Purpuroidea lapierrea Buvignier – Loriol in Loriol and Lambert: 15, pl. 1, fig. 7.

1913 Purpuroidea gracilis (De Loriol) – Cossmann: 183, pl. 11, figs 1–2; fig. 44.

2022 Purpuroidea lapierrea ( Buvignier, 1843) – Gründel, Hostettler and Menkveld-Gfeller: 55, pl. 9, figs 11–14, pl. 10, figs 1–5 (here more chresonymy and synonymy).

Material.

2 specimens, SNSB-BSPG 2016 XXI 1857 –1858.

Description.

Shell globular turbiniform with gradate spire; illustrated specimen (probably juvenile) 30 mm high; spire high, slender for the genus; last preserved whorl distinctly higher than spire; earliest preserved whorls convex, without visible ornament; early whorls with subsutural concavity that rapidly widens into distinct ramp in later whorls; several weak spiral cords can be seen on one specimen; shoulder of ramp with distinct nodes on last two preserved whorls; nodes rapidly enlarging, becoming almost thorn-like; nodes terminate adapically and abapically in bulging, ill-defined axial ribs; transition from whorl face to strongly convex base evenly rounded; faint lirae are visible in places, probably originally covering entire surface of the shell; aperture unknown.

Remarks.

The information about Purpuroidea lapierrea regarding the insertion of the nodes on the shoulder and the formation of a spiral sculpture varies in the literature.

Figures

Plate 10. (1) Neuburgensia angulata sp. nov., holotype, SNSB-BSPG 2016 XXI 1849, collection Lang, lateral view, height 24 mm. (2–3) Neuburgensia angulata sp. nov., paratype, SNSB-BSPG 2016 XXI 1850, collection Lang, (2) earliest preserved whorls in lateral view, height 1 mm, (3) lateral view, height 6 mm. (4) Neuburgensia angulata sp. nov., paratype, SNSB-BSPG 2016 XXI 1851, collection Lang, lateral view, height 10 mm. (5) Neuburgensia angulata sp. nov., paratype, SNSB-BSPG 2016 XXI 1852, collection Schäfer ¸ basal view, width 6 mm. (6) Neuburgensia angulata sp. nov., paratype, SNSB-BSPG 2016 XXI 1853, collection Lang, oblique apical, width 6.5 mm. (7–9) Neuburgensia rara sp. nov., holotype, SNSB-BSPG 2016 XXI 1856, (7) lateral view, height 30 mm, (8) early whorls in lateral view, height ca. 7 mm, (9) middle whorls in lateral view, height 12 mm. (10, 11) Purpuroidea lapierrea (Buvignier, 1843), SNSB-BSPG 2016 XXI 1857, lateral and oblique views, height 30 mm. (12, 13) Columbellaria corallina (Quenstedt, 1852), SNSB-BSPG 2016 XXI 1859, (12) apex in lateral view, height 10 mm, (13) lateral view, height 19 mm. (14, 15) Columbellaria corallina (Quenstedt, 1852), SNSB 1860, lateral and slightly oblique lateral views, height 21 mm. (16) Diarthema aspera sp. nov., paratype, SNSB-BSPG 2016 XXI 1862, lateral view, height 44 mm.