A very fine adult internal mould with some patches of test, fully developed on both sides, showing 5 whorls. Sutures including the last are visible, the last few are approximated and the body chamber which is almost complete, occupies half a whorl, shows strong uncoiling of the umbilical seam over the last 1/4 whorl and has a terminal constriction. The ribbing shows well on the inner whorls, fades over the last whorl and the last part of the body chamber is almost smooth. A strong keel is present. About 1/3 whorl of phragmocone is fortuitously missing, enabling the inner whorls to be seen well and compared with the microconch, with which it corresponds very closely. From England, UK.
Size: 106 mm diameter
Size: 106 mm diameter