(THYREOPHORA,(MARGINOCEPHALIA,(HETERODONTOSAURIDAE,(HYPSILOPHODONTOSAURIDAE,(Muttaburrasaurus,(Tenontosaurus,(DRYOSAURIDAE,(CAMPTOSAURIDAE,(Probactrosaurus,(IGUANODONTIDAE,(Ouranosaurus,(Protohadros,(HADROSAURINAE,LAMBEOSAURINAE)))))))))))));