Fig. 10. Eumegamys paranensis MLP 41.XII.13.237 in Basicranial Morphology And Relationships Of Antillean Heptaxodontidae (Rodentia, Ctenohystrica, Caviomorpha)

Fig. 10. Eumegamys paranensis MLP 41.XII.13.237, morphology of dissected ear region on specimen's left side. Photograph by author (A) was used as a basis for artist's reconstruction (B), with additional detail added after microscopic study. Unfortunately, remnant matrix hides much of the detail on the tympanic roof. Single asterisk, possible but unconfirmed portion of channel for ramus posttympanicus. Double asterisks, intratympanic rim of ectotympanic bulla overriding petrosal (promontorium).