Kingdom Animalia (animals) Eumetazoa (metazoans) Bilateria (bilaterally symmetrical animals) Deuterostomia (deuterostomes) Phylum Chordata (chordates) Craniata (craniates) Subphylum Vertebrata (vertebrates) Superclass Gnathostomata (jawed vertebrates) Euteleostomi (bony vertebrates) Class Sarcopterygii (lobe-finned fishes and terrestrial vertebrates) Tetrapoda (tetrapods) Amniota (amniotes) Class Reptilia (turtles, snakes, lizards, and relatives) Class Aves (birds) Subclass Neognathae (neognath birds) Infraclass Neoaves (modern birds) Order Coraciiformes (kingfishers and relatives) Family Bucerotidae (hornbills) Genus Ocyceros Species Ocyceros birostris (Indian grey hornbill) Species Ocyceros gingalensis (Sri Lanka grey-hornbill) Species Ocyceros griseus (Malabar grey hornbill)
