
A very fine adult phragmacone internal mould, well preserved on both sides showing the ribbing and sutures in excellent detail. The body chamber is just beginning at the crushed part of the last whorl, revealing the ribbing on the inner whorls. The umbilical seam continues for almost a further whorl and shows uncoiling. from Oxford Clay, Eye near Peterborough, Cambridgeshire, UK.
Size: 90 mm
Size: 90 mm