Order Anseriformes Wagler, 1831 - waterfowl and screamers Suborder Anseres Linnaeus, 1758 - waterfowl Family Anatidae Vigors, 1825 - ducks, geese, swans Subfamily Tadorninae Reichenbach - sheldrakes 1 Genus †Anabernicula Ross, 1935 2 Genus †Brantadorna Howard, 1963