Figure 3 in Morphological disparity in a hyperdiverse mammal clade: a new morphotype and tribe of Neotropical cricetids

Figure 3. Selected anatomical traits and regions in the cranium of Rhagomys: A, lateral left view of the cranium of R. septentrionalis (MEPN 10898): note the position of the mastoid (mc) well above the basal plane (indicated by the yellow horizontal line); B, lateral view of the left otic region of R. rufescens (MZUFV-CM 3706); C, ventral view of basicranial region of R. septentrionalis (MECN 6172); D, dorsal view (roofing bones of braincase removed) of basicranial region of R. septentrionalis (MEPN 10898); E, cross-section of the cranium of R. septentrionalis (MEPN 10898) at the frontal sinuses plane. Abbreviations: bs, basisphenoid; bo, basioccipital; f, fontanelle; fo, foramen ovale; m, foramen magnum; etI, ethmoturbinal I; etII, ethmoturbinal II; etIII, ethmoturbinal III; ft1, frontoturbinal 1; ft2, frontoturbinal 2; it, interturbinal; ls, lamina semicircularis; ps, presphenoid. Except for B the pictures are three-dimensional reconstructions based on micro-CT data.