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 Procellaria Linnaeus, 1758
             Procellaria aequinoctialis Linnaeus, 1758 - white-chinned petrel
               1 Procellaria aequinoctialis aequinoctialis Linnaeus, 1758
               2 Procellaria aequinoctialis conspicillata Gould, 1844