Alvania undefined-1

Alvania sp. 1 (Fig. 8C 1-C 3) MATERIAL AND DIMENSIONS. — Maximum height 1.3 mm, width 0.8 mm. — RGM.1364985 (8), leg. ACJ; RGM.1365091 (107), leg. AWJ; RGM.1365090 (1), leg. AWJ; RGM.1365089 (10), leg. AWJ; RGM.1364987 (2), leg. ACJ. SPECIES CHARACTERISATION. — Shell small, rissoiform.Protoconch of two smooth whorls. Three teleoconch whorls; spire whorls sculpture of four spiral cords; axial sculpture of around 16 broad orthocline ribs forming a reticulated pattern. Last whorl develops one secondary cord between suture and first cords. Base somewhat depressed, with four spiral cords; axial ribs stop at peribasal cord. DISTRIBUTION. — Lower Pleistocene: Atlantic, Selsoif, NW France (this paper). REMARK The material at hand is too worn to identify with certainty. In profile and sculpture, it is similar to several Italian Pliocene species such as Alvania lanciae (Calcara, 1845) and A. thalia (De Stefani & Pantanelli, 1878), which both have more numerous cords on the base,