A superb teaching and exhibition item. Adult phragmocone internal mould, developed on both sides, showing all the typically-ceratitic sutures in strong relief and excellent detail. The umbilical seam shows very strong uncoiling over the last 1/4 whorl and the last 16 sutures are approximated. From Crailsheim, Wurtemberg, Germany.
Size: 75 mm in diameter
Size: 75 mm in diameter