Subclass Elasmobranchii Bonaparte, 1838 - shark-like fishes see Infraclass Elasmobranchii Bonaparte, 1838
   Cohort Euselachii Hay, 1902 - spined sharks and relatives see Subclass Euselachii Hay, 1902
     Subcohort Neoselachii Compagno, 1977 - modern sharks and rays see Infraclass Elasmobranchii Bonaparte, 1838
       Order Squaliformes Compagno, 1973 - dogfish sharks
         1 Family Echinorhinidae Gill, 1862 - bramble sharks
         2 Family Oxynotidae Gill, 1863 - rough sharks
         3 Family Squalidae Blainville, 1816 - dogfish sharks