Figure 12 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 12 - Maxilla of Echinodon becklesii from the Lower Cretaceous Purbeck Formation of England. Right maxilla in lateral view (NHMUK 48211). Lithograph (A) and line drawing (B) from Owen (1861). Stereopair (C) and line drawing (D). Hatching indicates broken bone; dashed lines indicate estimated edges. Scale bars equal 5 mm. Abbreviations: adi arched diastema am articular surface for the maxilla antfe antorbital fenestra be buccal emargination fo foramen j jugal m1, 2, 7 maxillary tooth 1, 2, 7 pl  palatine ppf postpalatine foramen rm rim.