Mangelia sp.

Bouchard, Blanche, Wesselingh, Frank P., Pouwer, Ronald & Landau, Bernard, 2025, The Gelasian gastropod fauna of Selsoif (Manche, France), Geodiversitas 47 (3), pp. 39-91 : 74

Mangelia sp.

( Fig. 12F 1-F 3 )

MATERIAL AND DIMENSIONS. — Maximum height 3.6 mm, width 1.4 mm. — RGM.1365116 (6), leg. AWJ ; RGM.1365293 (1), leg. ACJ ; RGM.1365292 (5), leg. ACJ .

SPECIES CHARACTERISATION. — Shell small, slender fusiform. Protoconch not preserved. Teleoconch of 4.5 convex, weakly shouldered whorls bearing ten elevated, opisthocline ribs, about half width of their interspaces. No sign of spiral sculpture; possibly abraded. Last whorl elongate, weakly shouldered, moderately constricted at base. Aperture elongate, outer lip incomplete. Columella weakly excavated, siphonal canal moderately long, open, wide.

DISTRIBUTION. — Lower Pleistocene: Atlantic, Selsoif, NW France (this paper).

REMARK

All specimens are too incomplete and abraded to offer further identification.

Figures

FIG. 12. — Gastropods from Selsoif. All illustrated specimens are collected from the Sablière du Grand Marais, Selsoif, France and come from the Early Pleistocene Saint-Nicolas de Pierrepont Formation (continuation): A, Tritia reticulata (Linnaeus, 1758), RGM.1310337, leg AWJ, H = 9.34 mm; B, Nucella lapillus (Linnaeus, 1758), RGM.1365267, leg AWJ, H = 7.3 mm; C, Nucella lapillus (Linnaeus, 1758), RGM.1365290, leg ACJ, H = 5.07 mm; D, Nucella lapillus (Linnaeus, 1758) RGM.1405529, leg R. van Slageren, H = 15.1 mm; E, Ocenebra cf. erinaceus (Linnaeus, 1758), RGM.1364928, leg WG, H = 5.74 mm; F, Mangelia sp., RGM.1365293, leg ACJ, H = 3.5 mm; G, Propebela aff. turricula (Montagu, 1803), RGM.1365291, leg AWJ, H = 4.14 mm; H, Cyrillia linearis (Montagu, 1803), RGM.1365215, leg ACJ, H = 5.8 mm. Scale bars: A-C, E, H, 2 mm; D, 5 mm; F, G, 1 mm.

FIG. 1. — Simplified geological map of the Normandy region (after Dugué et al. 2000 and Pareyn 1987) showing the location of Selsoif:1, Precambrian-Palaeozoic basement; 2, Permo-Mesozoic Paris Basin fill; 3, Neogene-Quaternary subbasins.

FIG. 3. — Simplified biographic map of South-West of Europe (after Landau et al. 2011).