(Ancestor,(Anhimidae,(Anseranas,(Cnemiornis_calcitrans_and_gracilis,((Dendrocygna,(Thalassornis,(Stictonetta,(Plectropterus,(Euryanas_finschi,(Ta3orninae,Anatinae)))))),(Cereopsis,Branta_slash_Anser,(Coscoroba,Cygnus_sumnerensis_slash_Olor)))))));