Natura - nature
   actualia - actual entities
     Mundus Plinius - physical world
       naturalia - natural bodies
         Biota
           "neomura"
             Domain Eukaryota Chatton, 1925 - eukaryotes
               "neokaryotes" - mitochondrial eukaryotes
                 "neozoa"
                   "scotokaryotes" Cavalier-Smith, 1999
                     "podiates" Cavalier-Smith, 2013
                       Amorphea Adl et al., 2012
                         Opisthokonta Cavalier-Smith, 1987
                           Holozoa Lang, O'Kelly, Nerad, Gray & Burger, 2002
                             filozoa Shalchian-Tabrizi, Minge, Espelund, Orr, Ruden, Jakobsen & Cavalier-Smith, 2008
                               Kingdom Animalia Linnaeus, 1758 - animals
                                 Epitheliozoa Ax, 1996
                                   Eumetazoa Bütschli, 1910 - eumetazoans
                                     Bilateria Hatschek, 1888 - bilaterians
                                       Superphylum Deuterostomia Grobben, 1908 - deuterostomes
                                         [crown] Phylum Chordata Bateson, 1885 - chordates
                                           Subphylum Vertebrata Cuvier, 1812 - vertebrates
                                             Class Cyclostomata
                                               Order Petromyzontiformes Berg, 1940 - lampreys
                                                 Family Petromyzontidaeᵀ Bonaparte, 1832, sedis mutabilis - lampreys
                                                   Subfamily Lampetrinae
                                                     Genus Lampetraᵀ Bonnaterre, 1788
                                                       [Lampetra alaskensis (Vladykov & Kott, 1978)] see Lethenteron alaskense Vladykov & Kott, 1978