Adult internal mould with 5 whorls on both sides showing strong simple ribbing and crenulated keel. Sutures including the last are visible and the body chamber occupies 1/2 whorl shows uncoiling of the umbilical seam and retains strong ribbing to the end. Last 1/4 whorl missing. From Hawsker Bottoms, North Yorkshire, England, UK.
Size: 66mm
Size: 66mm