A very fine evolute internal mould with 7 whorls, beautifully preserved on both sides with some patches of test. The characteristic strong primary and secondary ribs show particularly well, sutures including the last are clearly visible and the body chamber occupies just over half a whorl. About 1/4 whorl of phragmocone is missing. From Chapmans Pool Dorset, England.
Size: 93 mm in diameter
Size: 93 mm in diameter