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 Pelecaniformes Sharpe, 1891
           Suborder Pelecani Sharpe, 1891 see Infraorder Pelecanides Sharpe, 1891
             Family Pelecanidae Rafinesque, 1815 - pelicans
               Genus Pelecanus Linnaeus, 1758
                 1 Pelecanus onocrotalus Linnaeus, 1758 - great white pelican
                 2 Pelecanus rufescens Gmelin, 1789 - pink-backed pelican
                 3 Pelecanus philippensis Gmelin, 1789 - spot-billed pelican
                 4 Pelecanus crispus Bruch, 1832 - Dalmatian pelican
                 5 Pelecanus conspicillatus Temminck, 1824 - Australian pelican
                 6 Pelecanus erythrorhynchos Gmelin, 1789 - American white pelican
                 7 Pelecanus occidentalis Linnaeus, 1766 - brown pelican