Fig. 11. Eumegamys paranensis MLP 41.XII.13.237 in Basicranial Morphology And Relationships Of Antillean Heptaxodontidae (Rodentia, Ctenohystrica, Caviomorpha)

Fig. 11. Eumegamys paranensis MLP 41.XII.13.237, lateral aspect of right auditory region, showing external acoustic meatus, tympanic fenestra, and posttympanic foramen (author's photograph). Single asterisk, damaged lateral wall exposing epitympanic recess; double asterisks, broken wall between stylomastoid foramen and external acoustic meatus. Although the ventral cleft between the fenestra and meatus proper is continuous in this specimen, there are signs of damage here as well. It is probable that a small flange of bone, no longer present, separated the two in life (cf. comparable conditions in Neoepiblema; Negri and Ferigolo, 1999: fig. 14).