Vertebrata Cuvier, 1812 - vertebrates see Infraphylum Vertebrata Lamarck, 1801
   Gnathostomata
     Class Chondrichthyes Huxley, 1880 - cartilaginous fishes
       Subclass Elasmobranchii Bonaparte, 1838 - shark-like fishes see Infraclass Elasmobranchii Bonaparte, 1838
         Superorder Euselachii Hay, 1902 see Subclass Euselachii Hay, 1902
           Order Galeomorpha see Superorder Galeomorphii Compagno, 1973
             Suborder Lamnoidea see Order Lamniformes Berg, 1958
               1 Family Carchariidae Müller & Henle, 1838 - sand tigers
               2 Family †Cretoxyrhinidae Glickman, 1958
               3 Family †Orthacodontidae Glickman, 1957 see Family Palaeospinacidae Regan, 1906
               4 Family Lamnidae Bonaparte, 1835 - mackerel sharks
               5 Family Mitsukurinidae Jordan, 1898 - goblin sharks
               6 Family Cetorhinidae Gill, 1861 - basking sharks
               7 Family Alopiidae Bonaparte, 1835 - thresher sharks