Class Chondrichthyes Huxley, 1880 - cartilaginous fishes
   Subclass Elasmobranchii Bonaparte, 1838 - shark-like fishes
     Cohort Euselachii Hay, 1902 - spined sharks and relatives see Infraclass Euselachii Hay, 1902
       Subcohort Neoselachii Compagno, 1977 - modern sharks and rays see Cohort Neoselachii Compagno, 1977
         Superorder Galeomorphii Compagno, 1973 see Division Galeomorphii Compagno, 1973
           1 Order Heterodontiformes Compagno, 1973 - bullhead sharks
           2 Order Orectolobiformes Compagno, 1973 - carpet sharks
           3 Order Lamniformes Berg, 1958 - mackerel sharks
           4 Order Carcharhiniformes Compagno, 1973 - ground sharks