Subclass Neornithes Gadow, 1893 see Clade Neornithes Gadow, 1893
   Infraclass Neoaves Sibley et al., 1988 see Subcohort Neoaves Sibley et al., 1988
     Parvclass Passerae see Superorder Passerimorphae Sibley et al., 1988
       Superorder Passerimorphae Sibley et al., 1988
         Order Gruiformes Bonaparte, 1854
           Suborder Grui see Suborder Grues Bonaparte, 1854
             1 Infraorder Eurypygides (Fürbringer, 1888) Sibley et al., 1988
             2 Infraorder Otidides
             3 Infraorder Gruides see Suborder Grues Bonaparte, 1854