Figure 6 from: Sereno P (2012) Taxonomy, morphology, masticatory function and phylogeny of heterodontosaurid dinosaurs. ZooKeys 226: 1-225. https://doi.org/10.3897/zookeys.226.2840

Figure 6 - Cranial remains of Pisanosaurus mertii from the Upper Triassic Ischigualasto Formation of Argentina. Drawings of a partial right maxilla in medial view (A) and right lower jaw (reversed) in lateral view (B) (from Bonaparte 1976). Dashed lines indicate estimated sutures and edges. Scale bar equals 2 cm in B. Abbreviations: a angular apd articular surface for the predentary be buccal emargination cp coronoid process d dentary emfo external mandibular fossa sa surangular.