A fine complete adult internal mould, developed on both sides showing the characteristic evolute body chamber occupying 2/3 whorl, ribbed to the end with a terminal constriction. The simple peristome is complete on one side. It is reminiscent of earlier Cranocephalites. A fine complete adult phragmacone internal mould with some test, developed on both sides showing the ribbing and sutures well. From Fossil Bjerg, northern Jameson Land, E Greenland.
Size: 110 mm
Size: 110 mm