Fig. 9 in Basicranial Anatomy of the Living Linsangs Prionodon and Poiana (Mammalia, Carnivora, Viverridae), with Comments on the Early Evolution of Aeluroid Carnivorans

Fig. 9. Dissection of the auditory region of Poiana richardsoni (AMNH 51438) in oblique lateral view (compare with fig. 7). The posterior chamber of the bulla has been opened (A), showing the inflected dorsal margin of the caudal entotympanic applied to the petrosal, and the ectotympanic resting on the promontorium anterior to the round window. Removal of the ectotympanic and rostral entotympanic (B) reveals the petrosal promontorium with ventral process produced as a flange buttressing the edge of the basioccipital. The flange is more developed in Poiana than in Prionodon, and the caudal entotympanic element is more inflated.