Subclass Neornithes Gadow, 1893 see Clade Neornithes Gadow, 1893 Infraclass Eoaves Sibley et al., 1988 see Cohort Palaeognathae Pycraft, 1900 Parvclass Ratitae (Merrem, 1813) see Subcohort Ratitae Merrem, 1813 Order Struthioniformes Latham, 1790 Suborder Struthioni Infraorder Struthionides see Suborder Struthioni Family Struthionidae Batsch, 1788 - ostriches