A fine typical adult internal mould with some patches of test, developed on both sides and showing 5 whorls. The last 1/4 whorl is body chamber and the last part of the phragmacone is missing on one side enabling the inner whorls to be seen. It differs from Arctocephalites in having a sharper external edge in the shell with pronounced forward projection and accentuation of the ribbing. From Mikael Bjerg, Jameson Land, E Greenland.
Size: 120 mm
Size: 120 mm