[Phylum] Chordata Bateson, 1885 - chordates
   Subphylum Craniata auct.
     Infraphylum Vertebrata Lamarck, 1801 - vertebrates
       Superclass Gnathostomata Gegenbaur, 1874 - jawed vertebrates
         Class Chondrichthyes Huxley, 1880 - cartilaginous fishes
           Subclass Euselachii Hay, 1902 - sharks, rays, and related fossils
             Infraclass Elasmobranchii Bonaparte, 1838
               1 Family †Agaleidae Rees, 2000, incertae sedis
               2 Family †Anachronistidae Duffin & Ward, 1983, incertae sedis
               3 Family †Lugalepididae Karatajūtė-Talimaa, 1997, incertae sedis
               4 Family †Mcmurdodontidae White, 1968, incertae sedis
               5 Family †Ostenoselachidae Duffin, 1998, incertae sedis
               6 Superorder Galeomorphi Compagno, 1973
               7 Superorder Squalomorphi
               8 Division Batomorphi - rays