Aartsen, J.J. van, 1987. European Pyramidellidae: III. Odostomia and Ondina . Boll. malac., 23: 1-34. Hayward, P.J., Wigham, G.D. & N. Yonow, 1990. Mollusca I: Polyplacophora, Scaphopoda, and Gastropoda. In: The Marine Fauna of the British Isles and North-West Europe. (ed. P.J. Hayward & J.S. Ryland). Clarendon Press, Oxford: 628-730. Seaward, D.R., 1990. Distribution of the marine molluscs of north west Europe. Nature Conservancy Council. |