Anorrhinus

Superregnum: Eukaryota
Cladus: Unikonta
Cladus: Opisthokonta
Cladus: Holozoa
Regnum: Animalia
Subregnum: Eumetazoa
Cladus: Bilateria
Cladus: Nephrozoa
Superphylum: Deuterostomia
Phylum: Chordata
Subphylum: Vertebrata
Infraphylum: Gnathostomata
Megaclassis: Osteichthyes
Cladus: Sarcopterygii
Cladus: Rhipidistia
Cladus: Tetrapodomorpha
Cladus: Eotetrapodiformes
Cladus: Elpistostegalia
Superclassis: Tetrapoda
Cladus: Reptiliomorpha
Cladus: Amniota
Classis: Reptilia
Cladus: Eureptilia
Cladus: Romeriida
Subclassis: Diapsida
Cladus: Sauria
Infraclassis: Archosauromorpha
Cladus: Crurotarsi
Divisio: Archosauria
Cladus: Avemetatarsalia
Cladus: Ornithodira
Subtaxon: Dinosauromorpha
Cladus: Dinosauriformes
Cladus: Dracohors
Cladus: Dinosauria
Ordo: Saurischia
Cladus: Eusaurischia
Subordo: Theropoda
Cladus: Neotheropoda
Cladus: Averostra
Cladus: Tetanurae
Cladus: Avetheropoda
Cladus: Coelurosauria
Cladus: Tyrannoraptora
Cladus: Maniraptoromorpha
Cladus: Maniraptoriformes
Cladus: Maniraptora
Cladus: Pennaraptora
Cladus: Paraves
Cladus: Eumaniraptora
Cladus: Avialae
Infraclassis: Aves
Cladus: Euavialae
Cladus: Avebrevicauda
Cladus: Pygostylia
Cladus: Ornithothoraces
Cladus: Ornithuromorpha
Cladus: Carinatae
Parvclassis: Neornithes
Cohors: Neognathae
Cladus: Neoaves
Ordo: Bucerotiformes

Familia: Bucerotidae
Genus: Anorrhinus
Species: A. austeni - A. galeritus - A. tickelli
Name

Anorrhinus Reichenbach, 1849
References
Avium systema naturale pl.XLIX

Anorrhinus is a genus of hornbills (family Bucerotidae) found in forests of Southeast Asia (just barely extending into adjacent parts of India and China). They are social and typically seen in groups, but only the dominant pair are believed to breed, while other group members act as helpers.
Taxonomy

This genus is sometimes limited to the bushy-crested hornbill, in which case the two remaining species, which are sometimes considered conspecific, are placed in the genus Ptilolaemus. A molecular phylogenetic study published in 2013 found that Anorrhinus was sister to a clade containing the genera Anthracoceros and Ocyceros.[1]

The genus contains three species:[2]

Image	Scientific name	Common Name	Distribution
	Anorrhinus austeni	Austen's brown hornbill	northeastern India and south to Vietnam and northern Thailand
	Anorrhinus tickelli	Tickell's brown hornbill or rusty-cheeked hornbill	Burma and adjacent western Thailand
	Anorrhinus galeritus	Bushy-crested hornbill	Brunei, Indonesia, Malaysia, Myanmar, and Thailand

References

Gonzalez, J.-C.T.; Sheldon, B.C.; Collar, N.J.; Tobias, J.A. (2013). "A comprehensive molecular phylogeny for the hornbills (Aves: Bucerotidae)". Molecular Phylogenetics and Evolution. 67 (2): 468–483. doi:10.1016/j.ympev.2013.02.012.

Gill, Frank; Donsker, David, eds. (2019). "Mousebirds, Cuckoo Roller, trogons, hoopoes, hornbills". World Bird List Version 9.2. International Ornithologists' Union. Retrieved 24 July 2019.

Kemp, A. C. (2001). Family Bucerotidae (Hornbills). pp. 436–523 in: del Hoyo, J., Elliott, A., & Sargatal, J. eds. (2001). Handbook of the Birds of the World. Vol. 6. Mousebirds to Hornbills. Lynx Edicions, Barcelona. ISBN 84-87334-30-X