Parent: Bucerotidae (Hornbills)

└─ Rhyticeros

└─── Rhyticeros everetti (Sumba hornbill)

└─── Rhyticeros narcondami (Narcondam hornbill)

└─── Rhyticeros plicatus (Papuan hornbill)

└─── Rhyticeros subruficollis (Plain-pouched hornbill)

└─── Rhyticeros undulatus (Wreathed hornbill)