[organisms] see Clade Biota Wagner 2004 [Wiemann, de Queiroz, Rowe, Planavsky, Anderson, Gogarten, Turner & Gauthier 2020]
   Tetrapoda Hatschek & Cori 1896 [Gauthier, Kluge & Rowe 1988]
     Order Procellariiformes Fürbringer, 1888
       Family Procellariidae Leach, 1820 - petrels, shearwaters
         Genus Pterodroma Bonaparte, 1856
           [Pterodroma mollis (Gould, 1844) - soft-plumaged petrel]
             1 [Pterodroma mollis madeira Mathews, 1934] see Pterodroma madeira Mathews, 1934