Figure 102 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 102 - Initial phylogenetic hypothesis for heterodontosaurid relationships. Qualitative parsimony analysis by Sereno (1986) with Heterodontosauridae as the sister taxon to Euornithopoda (= Ornithopoda) and with Abrictosaurus basal to Lycorhinus and Heterodontosaurus among heterodontosaurids. Some terminal taxa in the original analysis are collapsed into suprageneric taxa; red text indicates heterodontosaurid taxa.