Casuariiformes

Single Family: Casuariidae
Two Families: Casuariidae <a href="view_html.php?sq=Taylor_Swift&lang=en&q=Dromaiidae" class="mw-redirect" title="Dromaiidae">Dromaiidae

Casuariiformes; Temporal range: Possible Paleocene appearance.
	Southern cassowary
Scientific classification
Domain:	Eukaryota
Kingdom:	Animalia
Phylum:	Chordata
Class:	Aves
Infraclass:	Palaeognathae
Clade:	Novaeratitae
Order:	Casuariiformes; (Sclater, 1880) Forbes, 1884
Families
	Single Family: Casuariidae; ; Two Families: Casuariidae; Dromaiidae; ;
Diversity
	1 or 2 families,; 4 genera (including 2 extinct),; 9 species (including 5 extinct)
Synonyms
	Casuarii Sclater, 1880;

The Casuariiformes /kæsjuːˈæri.ɪfɔːrmiːz/ is an order of large flightless birds that has four surviving members: the three species of cassowary, and the only remaining species of emu. They are divided into either a single family, Casuariidae, or occasionally two, with the emu splitting off into its own family, Dromaiidae. The IOC World Bird List and Cornell Lab of Ornithology's Birds of the World both do not recognize Dromaiidae, placing the emu in the family Casuariidae.^[3]^[4]

All four living members are native to Australia-New Guinea,^[5] but some possible extinct taxa occurred in other landmasses.

^ Brand, S. (2008)
^ Brodkob, Pierce (1963). "Catalogue of fossil birds 1- Archaeopterygiformes through Ardeiformes". Biological Sciences, Bulletin of the Florida State Museum. 7 (4): 180–293. Retrieved 30 December 2015.
^ "Ratites: Ostriches to tinamous". IOC World Bird List v15.1. Retrieved 14 March 2025.
^ "Emu (Dromaius novaehollandiae)". Birds of the World. Cornell Lab of Ornithology. 4 March 2020. Retrieved 14 March 2025.
^ Clements, J (2007)