Figure 13 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 13 - Maxilla of Echinodon becklesii from the Lower Cretaceous Purbeck Formation of England. Part (NHMUK 48210) and counterpart (NHMUK 48209) of a block preserving portions of the snout of a skull. A, B Part preserving the posterior portion of the left maxilla and portions of the left lacrimal, jugal and ectopterygoid in medial view (NHMUK 48210; reversed from Owen 1861). C, D Counterpart preserving portions of the right and left premaxillae and the anterior portion of the left maxilla in lateral view (NHMUK 48209; from Owen 1861). A red asterisk marks a crown on the part (A) and its impression on the counterpart (C). Abbreviations: idt impressions of dentary teeth imt impressions of maxillary teeth l left m maxilla pm premaxilla.