 The Swedish naturalist Carl Linnaeus had introduced the genus "Casuarius" in the sixth edition of his "Systema Naturae" published in 1748, but Linnaeus dropped the genus in the important tenth edition of 1758 and put the southern cassowary together with the common ostrich and the greater rhea in the genus "Struthio".As the publication date of Linnaeus's sixth edition was before the 1758 starting point of the International Commission on Zoological Nomenclature, Brisson, and not Linnaeus, is considered as the authority for the genus.Cassowaries (from Malay "kasuari") are part of the ratite group, which also includes the emu, rheas, ostriches, and kiwi, as well as the extinct moas and elephant birds.