Phylum Chordata Bateson, 1885 - chordates
   Class Aves Linnaeus, 1758 - birds see Subclass Aves Linnaeus, 1758
     Subclass Neornithes Gadow, 1893 see Clade Neornithes Gadow, 1893
       Superorder Neognathae Pycraft, 1900 see Cohort Neognathae Pycraft, 1900
         Order Ciconiiformes Bonaparte, 1854
           Family Threskiornithidae Richmond, 1917 - ibises and spoonbills
             Subfamily Threskiornithinae Richmond, 1917 see Family Threskiornithidae Richmond, 1917
               01 Genus Threskiornis Gray, 1842
               02 Genus Pseudibis Hodgson, 1844
               03 Genus Thaumatibis Elliot, 1877 see Genus Pseudibis Hodgson, 1844
               04 Genus Geronticus Wagler, 1832
               05 Genus Nipponia Reichenbach, 1850
               06 Genus Bostrychia Reichenbach, 1853
               07 Genus Theristicus Wagler, 1832
               08 Genus Cercibis Wagler, 1832
               09 Genus Mesembrinibis Peters, 1930
               10 Genus Phimosus Wagler, 1832
               11 Genus Eudocimus Wagler, 1832
               12 Genus Plegadis Kaup, 1829
               13 Genus Lophotibis Reichenbach, 1853