Asperilla longispina ( Rolle, 1861 )

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

Asperilla longispina ( Rolle, 1861)

Plate 2: figs 9–11

2017 Asperilla longispina ( Rolle, 1861) – Gründel, Keupp and Lang: 203, pl. 10, figs 11–17 (here more synonymy and chresonymy).

Material.

2 specimens, SNSB – BSPG 2016 XXI 1661 –1662.

Remarks.

The present specimens have fewer spines on the keel (ca. 7) than those reported by Gründel et al. (2017). In addition, the present specimens have more nodes on the spiral cord at the transition from whorl face to base. According to the literature, the base of this species is smooth or has only a single nodular spiral cord close to the spiral cord at the transition to the whorl face ( Gründel et al. 2017). However, the present specimen has three distinctly nodular spiral cords on the base, besides the spiral cord at the transition to the whorl face. The meaning of these differences the present material to that reported by Gründel et al. (2017) are difficult to judge without additional well-preserved material. Therefore, we tentatively keep the present specimens under the same species name.

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.