Neornithes Gadow, 1893 - living birds
   Neognathae Pycraft 1900 see Cohort Neognathae Pycraft, 1900
     Galloanserae Sibley, Ahlquist & Monroe Jr., 1988 see Subcohort Galloanserae Sibley, Ahlquist & Monroe Jr., 1988
       [Order] Anseriformes Wagler, 1831 - waterfowl and screamers
         Family Anatidae Vigors, 1825 - ducks, geese, swans
           Subfamily Anserinae Vigors, 1825 - geese
             Genus Anser Brisson, 1760
               Anser albifrons (Scopoli, 1769) - greater white-fronted goose
                 Anser albifrons elgasi Delacour & Ripley, 1975 - tule goose