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 Anseriformes Wagler, 1831 - waterfowl and screamers
           Family Anatidae Vigors, 1825 - ducks, geese, swans
             Subfamily Anserinae Vigors, 1825 - geese
               Genus Anser Brisson, 1760
                 01 Anser cygnoides (Linnaeus, 1758) - swan goose
                 02 Anser fabalis (Latham, 1787) - bean goose
                 03 Anser brachyrhynchus Baillon, 1834 - pink-footed goose
                 04 Anser albifrons (Scopoli, 1769) - greater white-fronted goose
                 05 Anser erythropus (Linnaeus, 1758) - lesser white-fronted goose
                 06 Anser anser (Linnaeus, 1758) - greylag goose
                 07 Anser indicus (Latham, 1790) - bar-headed goose
                 08 Anser caerulescens (Linnaeus, 1758) - snow goose
                 09 Anser rossi see Anser rossii Cassin, 1861
                 10 Anser canagicus (Sevastianov, 1802) - emperor goose