Biogeographic distribution in time for heterodontosaurids included in the phylogenetic analysis. Localities for included taxa are plotted on an Early Cretaceous (Berriasian-Valanginian) paleogeographic map (Smith et al. 1994) and recent time scale (Gradstein and Ogg 2009). Abbreviations for taxon localities and biogeographic areas: 1 Echinodon 2 Fruitadens 3 Kayenta heterodontosaurid 4 Tianyulong 5 Manidens 6 Abrictosaurus, Lycorhinus, Heterodontosaurus, Pegomastax A Africa As Asia E Europe NA North America SA South America.