Alvania cancellata

Alvania cf. cancellata (da Costa, 1778) (Fig. 8A 1-A 3) cf. Turbo cancellatus da Costa, 1778: 104, pl. 8, figs 6, 8. MATERIAL AND DIMENSIONS. — Maximum height 2.6 mm, width 1.6 mm. — RGM.1364986 (1), leg. ACJ; RGM.1310338 (1), leg ACJ. SPECIES CHARACTERISATION. — Shell small, rissoiform. Protoconch not preserved. Three teleoconch whorls preserved. Sculpture of three spiral cords on spire whorls, and 13 orthocline ribs forming coarsely reticulated sculpture. Last whorl bearing six spiral cords. Aperture round, peristome complete, thickened, outer lip thickened. DISTRIBUTION. — Lower Pleistocene: Atlantic, Selsoif,NW France (this paper). Alvania cancellata is known from the Upper Pliocene Atlantic of the Mondego Basin, Portugal, and was widespread in the Pliocene Mediterranean. Raad et al. (2013) reported occasional findings from the Upper Pleistocene NSB of the Netherlands.Today it is distributed from the British Isles south into the Mediterranean (Landau et al. 2004). REMARK Due to the scarcity and poor preservation of the material at hand, identification is uncertain. It is clearly separated from the other two congeners present in the assemblage by the shape and the number of spiral cords.