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 assimilis Gould, 1838 - little shearwater
               1 Puffinus assimilis baroli (Bonaparte, 1857)
               2 Puffinus assimilis boydi Mathews, 1912
               3 Puffinus assimilis elegans Giglioli & Salvadori, 1869
               4 Puffinus assimilis tunneyi Mathews, 1912
               5 Puffinus assimilis assimilis Gould, 1838
               6 Puffinus assimilis haurakiensis Fleming & Serventy, 1943
               7 Puffinus assimilis myrtae Bourne, 1959
               8 Puffinus assimilis kermadecensis Murphy, 1927