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] Procellariiformes Fürbringer, 1888
         Family Procellariidae Leach, 1820 - petrels, shearwaters
           Genus Pagodroma Bonaparte, 1856 [monotypic]
             Pagodroma nivea (Forster, 1777) - snow petrel
               1 Pagodroma nivea nivea (Forster, 1777) - lesser snow-petrel
               2 Pagodroma nivea confusa Mathews, 1912 - greater snow-petrel