FIG. 8. Leiuromys occasius basicrania. A in A Review of the Pattonomys/Toromys Clade (Rodentia: Echimyidae), with Descriptions of a New Toromys Species and a New Genus

FIG. 8. Leiuromys occasius basicrania. A, internal position of posterior alisphenoid canal (arrows), MCZ 37964 (Ecuador, left M3 lacking); B, buccinator and masticatory foramina joined in a slit (b+M) FMNH 84427 (Peru). Note absence of inferior jugal process, shallow or absent grooves and ridge on anterior palate between premolars, and small tympanic bulla in B.