Neornithes Gadow, 1893 - living birds
   Neognathae Pycraft 1900 see Cohort Neognathae Pycraft, 1900
     Neoaves Sibley et al. 1988 see Subcohort Neoaves Sibley et al., 1988
       [Order] Pelecaniformes Sharpe, 1891
         Family Sulidae Reichenbach, 1849 - gannets, boobies
           Genus Sula Brisson, 1760
             Sula leucogaster (Boddaert, 1783) - brown booby
               1 Sula leucogaster leucogaster (Boddaert, 1783)
               2 Sula leucogaster brewsteri Goss, 1888
               3 Sula leucogaster etesiaca Thayer & Bangs, 1905
               4 Sula leucogaster plotus (Forster, 1844)