Holotype. Microconch of AAL 4.0A. Complete adult internal mould, four whorls. Sutures including the last are visible on one side and the body chamber occupies 3/5 whorl, shows uncoiling of the umbilical seam. Peristome with one & half lappets. From Bradford Abbas, Dorset.
Size: 60 mm
Size: 60 mm