Bathyal Mollusca from the cold-water coral biotope of Santa Maria di Leuca (Apulian margin, southern Italy) Author Negri, Mauro Pietro Author Corselli, Cesare text Zootaxa 2016 4186 1 1 97 journal article 10.11646/zootaxa.4186.1.1 5b97cddd-5284-4a6b-8693-898864fb4711 1175-5326 165288 029B675F-776C-4CD6-9992-FA05AEADFA7B Axinulus alleni ( Carrozza, 1981 ) Fig. 7 a–c Thyasira alleni Carrozza, 1981 (p. 224, pl. 1, figs. 1–3). Thyasira ( Axinulus ) alleni Carrozza, 1981 — Payne & Allen 1991 (p. 531, figs. 78–81). Thyasira alleni Carrozza, 1981 — Bonfitto et al. 1994 (p. 149, fig. 37); Repetto et al. 2005 (p. 308, mid left fig.). Diagnostic characters . Obliquely subquadrangular shell; edentulous hinge; weak postero-dorsal radial depression; outer surface bearing growth lines only. Prodissoconch: shell type ST-2D; length about 120 µm; roundish D-shaped outline; convex profile; surface with irregular low wrinkles; rim-like shell lip barely separated from P-1; transition to the nepioconch well marked. Occurrence . Box-corer sample BC72 (1 specimen). Height: 2.5 mm . Distribution and habitat . Axinulus alleni ranges from NE Atlantic to West Africa ( Morocco , Angola and Cape basins) and to the Mediterranean, as far east as the North Aegean Sea, dwelling on medium-fine, organic muddy sand from about 150 to over 1500 m depth ( Carrozza 1981 ; Payne & Allen 1991 ; Salas 1996 ; Zenetos et al. 2005 ). Fossil record. Upper Pleistocene of Sardinia ( Bonfitto et al. 1994 ).