Buccinum undatum Linnaeus, 1758

Bouchard, Blanche, Wesselingh, Frank P., Pouwer, Ronald & Landau, Bernard, 2025, The Gelasian gastropod fauna of Selsoif (Manche, France), Geodiversitas 47 (3), pp. 39-91 : 69-70

Buccinum undatum Linnaeus, 1758

( Fig. 11D 1-D 3 )

Buccinum undatum Linnaeus, 1758: 740 . — Wood 1848: 35, pl. 3, fig. 12a-b. — Harmer 1914: 90, pl. 6, figs 1-10, pl. 7, figs 1-6, pl. 8, figs 1-2, pl. 10, fig. 13. — Domènech & Martinell 1982: 52, fig. 16. — Marquet 1997: 91, pl. 7, fig. 6. — Wesselingh et al. 2014: 194, fig. 1. — Símonarson & Eiríksson in Eiríksson & Símonarson 2021: 277, pl. 7.5, fig. 2.

For more, see synonymy list in Marquet (1997) and Símonarson et al. (2021).

MATERIAL AND DIMENSIONS. — Maximum height 32.1 mm, width 18.7 mm. — RGM.1364922 (2), leg. WG; RGM.1365005 (3), leg. ACJ; RGM.1365109 (11), leg. AWJ; RGM.1365187 (1), leg. AWJ.

SPECIES CHARACTERISATION. — Shell large, relatively fragile, broadly fusiform; protoconch not preserved; teleoconch of four strongly convex whorls separated by impressed linear suture; sculpture of weak spirals cords with secondaries variably developed; sinuous axial ribs variably developed on early whorls weakening abapically, obsolete on last 1-2 whorls; aperture large, ovate; outer lip weakly thickened by varix, sinuous in profile; columella twisted at fasciole, columella and parietal callus moderately expanded over base, variably thickened.

DISTRIBUTION. — Lower Pliocene: NSB, Coralline Crag, England ( Wood 1848; Harmer 1914). — Upper Pliocene: NSB, Belgium ( Marquet 1997), Red Crag, England ( Wood 1848; Harmer 1914). — Lower Pleistocene: Atlantic, Iceland ( Eiriksson & Símonarson 2021), Atlantic, West Greenland ( Símonarson 1981), Selsoif, NW France (this paper). — Upper Pleistocene: western Mediterranean, Spain ( Domènech & Martinell 1982); central Mediterranean, Italy ( Malatesta & Zarlenga 1986), Baltic ( Funder et al. 2002). — Holocene: NSB ( Strand Petersen 2004). Today, this species is present in the North Atlantic, from Greenland and New Jersey on the western side and Iceland to the Bay of Biscay ( Fretter & Graham 1984). Occurs in every kind of habitat, but prefers soft bottoms, lowest tide line to 1200 m depth.

REMARKS

Although highly variable, it cannot be confused with any other species.The Selsoif specimens are mostly incomplete but ascribed to the species without doubt. This is a boreal species.

Figures

FIG. 11. — 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, Erato exmaugeriae Sacco, 1894, RGM.1365287, leg AWJ, H = 2.9 mm; B, Cryptonatica sp., RGM.1365218, leg AWJ, H = 1.37 mm; C, Euspira catena (da Costa, 1778), RGM.1365219, leg AWJ, H = 5.48 mm; D, Buccinum undatum Linnaeus, 1758, RGM.1365187, leg AWJ, H = 12 mm; E, Neptunea inversa Harmer,1918,RGM.1365188, leg ACJ, H = 13.7 mm; F, Tritia incrassata (Strøm, 1768), RGM.1365209, leg WG, H = 6.2 mm. Scale bars: A, 1 mm; B, 500 μm; C, F, 2 mm; D, E, 5 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).