Subclass Neornithes Gadow, 1893 see Clade Neornithes Gadow, 1893
   Order Pelecaniformes Sharpe, 1891
     Suborder Pelecani Sharpe, 1891 see Infraorder Pelecanides Sharpe, 1891
       Family Fregatidae Degland & Gerbe, 1867 - frigatebirds
         1 Genus Fregata Lacépède, 1799