(Lesothosaurus_diagnosticus,(Thyreophora,((Jeholosaurus_lujiatunensis,(Hypsilophodon_foxii,Iguanodontia)),(Agilisaurus,(Heterodontosauridae,(Pachycephalosauria,(Yinlong_downsi,(Chaoyangsaurus_youngi,(Psittacosaurus_mongoliensis,(Liaoceratops_yanzigouensis,(Archaeoceratops_oshimai,Ceratopsidae)))))))))));