Figure 19 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 19 - Skull of Echinodon becklesii from the Lower Cretaceous Purbeck Formation of England. Skull reconstructions in left lateral view. A From Galton (1978). B This study. Dashed lines indicate estimated edges and sutures. Abbreviations: adf anterior dentary foramen adi arched diastema apmf anterior premaxillary foramen be buccal emargination cp coronoid process d dentary d1, 2, 11 dentary tooth 1, 2, 11 fo foramen j jugal l lacrimal m maxilla m1, 2, 8 maxillary tooth 1, 2, 8 pd predentary pm premaxilla pm1, 3 premaxillary tooth 1, 3.