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 Puffinus Brisson, 1760
             Puffinus auricularis Townsend, 1890 - Townsend's shearwater
               1 Puffinus auricularis auricularis Townsend, 1890 - Townsend's shearwater
               2 Puffinus auricularis newelli Henshaw, 1900 - Newell's shearwater