Chemnitzia? lactea (Linnaeus, 1758)

(Fig. 14D 1-D 3)

MATERIAL AND DIMENSIONS. — Maximum height 4.3 mm (incomplete), width 1.5 mm.— RGM.1364932 (1), leg. WG; RGM.1365023 (68), leg. ACJ; RGM.794509 (c. 95), leg. AWJ .

SPECIES CHARACTERISATION. — Fragment consisting of last 4.5 whorls, sculptured by broad, curved, opisthocline ribs, wider than their interspaces, stopping abruptly at suprasutural cord and at base.

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

REMARKS

The character of the spiral sculpture stopping abruptly at a suprasutural cord on the later spire whorls and at the base on the last whorl allows attribution to the genus Chemnitzia d'Orbigny, 1840 (see Landau & Micali 2021: 284). The material resembles the modern highly variable Chemnitzia lactea, but the general worn appearance and the lack of preserved protoconch make attribution uncertain.