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 Pachyptila Illiger, 1811
             1 Pachyptila vittata (Forster, 1777) - broad-billed prion
             2 Pachyptila salvini (Mathews, 1912) - Salvin's prion
             3 Pachyptila desolata (Gmelin, 1789) - Antarctic prion
             4 Pachyptila belcheri (Mathews, 1912) - slender-billed prion
             5 Pachyptila turtur (Kuhl, 1820) - fairy prion
             6 Pachyptila crassirostris (Mathews, 1912) - fulmar-prion