A complete adult cast from an external mould of a concretion and showing both sides. The smooth inner whorls show well and also the dense wiry ribbing on the remaining whorls, which compares with that on the inner whorls of CAR 24A. The umbilical seam uncoils over the last 3/4 whorl. From a concretion in glacial drift, Novaya Zemlya, former USSR.
Size: 34 mm
Size: 34 mm