Fig. 23

Schematic drawing of the cross section of the basicranium of Dactylopsila sp. (DUCEC-8323, section 1313 Plate 6a). This species exhibits the typical bullar condition of most diprotodontians, consisting of a squamosal roof of the middle ear, and a squamosal process contributing to the lateral side of the bulla overlain medially in part by a tympanic process of the alisphenoid