Figure 2.

A and B: Ventral view of the skull of Mirounga leonina showing measurements and angles used in this work; C: detail of left bulla showing the angles). Anterior base angle (AA), biglenoid width (BGW), maximum length of the bulla (BL), bimastoid width (BMW), maximum width of bulla (BW), length of ectotympanic bone (EcL), ectotympanic width (EcW), maximum length of endotympanic bone (EnL), endotympanic width (EnW), latero-posterior base angle (LPA), medial base angle (MA), width between tubers (WT).