(Heterodontosaurus_tucki,(Hypsilophodon_foxii,(Protoceratops_andrewsi,(P_sinensis,P_neimongoliensis,P_ordosensis,P_sibiricus,Psittacosaurus_sp,P_major,(P_mongoliensis,P_meileyingensis,P_xinjiangensis),(P_mazongshanensis,P_lujiatunensis)))));