Order Charadriiformes Huxley, 1867 - shorebirds, gulls, auks
   Suborder Lari Sharpe, 1891 - gulls and allies
     Family Laridae Vigors, 1825 - gulls, terns and skimmers
       Subfamily Larinae Vigors, 1825 - gulls
         1 Genus †Halcyornis Owen, 1846
         2 Genus †Rupelornis van Beneden
         3 Genus Larus Linnaeus, 1758
         4 Genus †Gaviota A.H. Miller & Sibley
         5 Genus †Ocyplanus De Vis, 1905