Fig. 8From: Morphological disparity in extant and extinct sepiid phragmocones: morphological adaptions for phragmocone strength compared to those related to cameral liquid emptying hypothesesShallow water sepiids. Broad, flat, low septal density. The last loculus makes up a significant proportion of the total phragmocone volume; the overall sepion is flat for its width; the dorsal side of sepion has no ribbing for strengthening. Red line shows position of last loculus contact with siphuncular epitheliumBack to article page