Chordata Bateson, 1885 - chordates
   Aves Linnaeus, 1758 - birds see Subclass Aves Linnaeus, 1758
     Neornithes Gadow, 1893 see Clade Neornithes Gadow, 1893
       Neognathae Pycraft, 1900 see Cohort Neognathae Pycraft, 1900
         Charadriiformes Huxley, 1867 - shorebirds, gulls, auks
           Lari Sharpe, 1891 - gulls and allies
             Sternidae Bonaparte, 1838 see Subfamily Sterninae Bonaparte, 1838
               Sterna Linnaeus, 1758
                 Sterna aurantia Gray, 1831 - river tern