An exceptionally fine wholly septate specimen with test on one side. It shows the sutures in good relief on both sides it shows virgatotome ribbing in its most extreme form. The last few sutures are simplified and approximated An exceptionally fine wholly septate specimen with test on one side. It shows the sutures in good relief on both sides it shows virgatotome ribbing in its most extreme form. The last few sutures are simplified and approximated and the umbilical seam uncoils strongly over the last 1/3 whorl. Russia.
Size: 96mm diameter
Size: 96mm diameter