FIGURE 12. 3D in A reappraisal of the cranial and mandibular osteology of the spinosaurid Irritator challengeri (Dinosauria: Theropoda)

FIGURE 12. 3D renderings of the right and left frontals of Irritator challengeri (SMNS 58022). Note that the interfrontal contact could not be identified in the CT data, but externally visible sutures on the specimen show that these bones are only partially fused (see Figure 8). A, dorsal view; B, ventral view; C, left lateral view; D, anterior view. Abbreviations: crcr, crista cranii; dmr, dorsal median ridge; lspc, laterosphenoid contact; nac, nasal contact; np, nasal process; olt, olfactory tract, poc, postorbital contact, stf, supratemporal fossa.