views updated May 23 2018

Casuariiformes (cassowaries, emus; class Aves) An order of large ratites that have coarse, hair-like plumage, and three toes. There are two families, Casuariidae and Dromaiidae, confined to Australasia.


views updated May 29 2018

Struthioniformes (ostrich; class Aves) An order that comprises only the family Struthionidae.