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 Procellariiformes Fürbringer, 1888
           Family Procellariidae Leach, 1820 - petrels, shearwaters
             01 Genus Macronectes Richmond, 1905
             02 Genus Fulmarus Stephens, 1826
             03 Genus Thalassoica Reichenbach, 1853
             04 Genus Daption Stephens, 1826
             05 Genus Pagodroma Bonaparte, 1856
             06 Genus Halobaena Bonaparte, 1856
             07 Genus Pachyptila Illiger, 1811
             08 Genus Pterodroma Bonaparte, 1856
             09 Genus Pseudobulweria Mathews, 1936
             10 Genus Bulweria Bonaparte, 1843
             11 Genus Procellaria Linnaeus, 1758
             12 Genus Calonectris Mathews & Iredale, 1915
             13 Genus Puffinus Brisson, 1760