Camptosaurus_disparIguanodon_atherfieldensisIguanodon_bernissartensisOuranosaurus_nigeriensisAltirhinusBactrosaurus_johnsoniParasaurolophus_walkeri_slash_cyrtocristatusHypacrosaurus_stebingeriCorythosaurus_casuariusLambeosaurus_lambeiLambeosaurus_magnicristatusNipponosaurus_sachalinensisHypacrosaurus_altispinusOsteologyMaximum ParsimonyBased on reanalysis of the original matrix.Suzuki_etal_2004a