The phragmacone whorls of CAR 23A, for use in comparison with CAR 23B for a convincing demonstration of dimorphism. A superb intenal mould with some patches of test, beautifully preserved on both sides and showing 4 whorls with the characteristic ribbing and keeled venter. Sutures clearly visible. From glacial drift derived from the Ampthill Clay of eastern England.
Size: 55 mm
Size: 55 mm