(Lesothosaurus,(Heterodontosaurus,((Agilisaurus,(Orodromeus,(Haya,Jeholosaurus))),((Goyocephale,(Wannanosaurus,(Homalocephale,Stegoceras))),((Liaoceratops,(Aquilops,(Auroraceratops,(Archaeoceratops,(Yamaceratops,(Asiaceratops,((Graciliceratops,((Bagaceratops,Protoceratops),(Zuniceratops,(Centrosaurus,Triceratops)))),(Cerasinops,(((Leptoceratops,Udanoceratops),(Zhuchengceratops,Unescoceratops)),(Prenoceratops,(Montanoceratops,Koreaceratops))))))))))),((Xuanhuaceratops,(Chaoyangsaurus,(Hualianceratops,Yinlong_downsi))),(Psittacosaurus_sinensis,(Psittacosaurus_mongoliensis,Psittacosaurus_lujiatunensis))))))));