Bucerotiformes
Phylum: Chordata
Subphylum: Vertebrata
Class: Aves
Subclass: Neornithes (2,057 genera / 9,672 species)
Infraclass: Eoaves
Parvclass: Coraciae
Superorder: Bucerotimorphae
Order: Bucerotiformes (9/56 – typical hornbills, ground-hornbills)
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Family: Bucerotidae (8/54 – typical hornbills)
Family: Bucorvidae (1/2 – ground-hornbills)
