Neornithes Gadow, 1893 - living birds
   Neognathae Pycraft 1900 see Cohort Neognathae Pycraft, 1900
     Neoaves Sibley et al. 1988 see Subcohort Neoaves Sibley et al., 1988
       [Order] Gruiformes Bonaparte, 1854
         ?Family Otidae - bustards see Family Otididae Gray, 1840
           01 Genus Otis Linnaeus, 1758 [monotypic]
           02 Genus Ardeotis Le Maout, 1853
           03 Genus Chlamydotis Lesson, 1839
           04 Genus Neotis Sharpe, 1893
           05 Genus Eupodotis Lesson, 1839
           06 Genus Lophotis Reichenbach, 1848
           07 Genus Afrotis Gray, 1855
           08 Genus Lissotis Reichenbach, 1848
           09 Genus Houbaropsis Sharpe, 1893 [monotypic]
           10 Genus Sypheotides Lesson, 1839 [monotypic]
           11 Genus Tetrax Forster, 1817 [monotypic]