Fig. 4. Amblyrhiza inundata AMNHVP 11842 in Basicranial Morphology And Relationships Of Antillean Heptaxodontidae (Rodentia, Ctenohystrica, Caviomorpha)

Fig. 4. Amblyrhiza inundata AMNHVP 11842, left auditory region; stereopair view (with key) in oblique ventral aspect. The condition of the specimen did not permit thorough cleaning of the tympanic cavity. Cochlear canaliculus for the perilymphatic duct could not be identified with certainty. In this orientation the posttympanic foramen is mostly hidden; the leader points to its general location (circle of dots in key diagram).