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
               Genus Mesembrinibis Peters, 1930
                 1 Mesembrinibis cayennensis (Gmelin, 1789) - green ibis