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 Tadorninae Reichenbach - sheldrakes
Genus Merganetta Gould, 1842 [monotypic]
Merganetta armata Gould, 1842 - torrent duck
Merganetta armata colombiana Des Murs, 1845 - Colombian torrent-duck