Subclass Neornithes Gadow, 1893 see Clade Neornithes Gadow, 1893
   Infraclass Neoaves Sibley et al., 1988 see Subcohort Neoaves Sibley et al., 1988
     Parvclass Coraciae see Order Coraciiformes Forbes, 1884
       Superorder Bucerotimorphae see Suborder Bucerotes Fürbringer, 1888
         1 Order Bucerotiformes Fürbringer, 1888 see Infraorder Bucerotides Fürbringer, 1888
         2 Order Upupiformes see Infraorder Upupides Seebohm, 1890