Parent: Rhyticeros

└─ Rhyticeros plicatus (Papuan hornbill)

└─── Rhyticeros plicatus dampieri

└─── Rhyticeros plicatus harterti

└─── Rhyticeros plicatus jungei

└─── Rhyticeros plicatus mendanae

└─── Rhyticeros plicatus plicatus

└─── Rhyticeros plicatus ruficollis