Creniturbo sp. 1

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

Creniturbo sp. 1

Plate 5: figs 1–4

Material.

4 specimens from Saal: SNSB – BSPG 2016 XXI 1745 –1748 (2 specimens collection Sylla, 1 specimen collection Keupp, 1 specimen collection Lang).

Description.

The present specimens are moderately to poorly preserved; shape, size and sculpture correspond – as far as can be seen – to those of the Creniturbo gibbosus n. sp.; however, the present specimens have a more or less distinct spiral cord on the base, directly below the basal edge; additional faint spiral cords obscured by poor preservation present on base; nodes on basal angulation much weaker than in Creniturbo gibbosus .

Remarks.

Cerithium binodum Buvignier, 1852 is larger, its base is more convex and it has two rows of nodes on the basal edge. Creniturbo dirce (d’Orbigny) sensu Loriol in Loriol and Koby (1890) is also larger with a double row of nodes on the basal edge and it has strong spiral cords on the base.

Figures

Plate 5. (1, 2) Creniturbo sp., SNSB – BSPG 2016 XXI 1745, lateral and basal views, width 13 mm. (3, 4) Creniturbo sp., SNSB – BSPG 2016 XXI 1746, collection Lang, (3) detail of base, width 3.2 mm, (4) lateral view, width 3.5 mm. (5–7) Kelheimia triangulata sp. nov., holotype, SNSB – BSPG 2016 XXI 1749, (5, 7) lateral and apical views, width 23 mm, (6) apex in lateral view, height 9 mm. (8–10) Kelheimia triangulata sp. nov., paratype, SNSB – BSPG 2016 XXI 1750, lateral, apical and basal views, width 47 mm. (11) Kelheimia triangulata sp. nov., paratype, SNSB – BSPG 2016 XXI 1751, oblique basal view with aperture, height of aperture 32 mm. (12–15) Vetigastropoda gen. and sp. indet., SNSB – BSPG 2016 XXI 1758, (12, 15) lateral and basal views, width 23 mm, (13) detail of lateral view, width 12 mm, (14) detail of ornament, height 10 mm. (16) Parvulatopsis? sp. 1, SNSB – BSPG 2016 XXI 1759, lateral view, width 12 mm.