Kingdom Animalia Linnaeus, 1758 - animals
   Phylum Craniata Linnaeus, 1758 see Subphylum Vertebrata Cuvier, 1812
     Pisces
       Class Elasmobranchii Bonaparte, 1838 see Subclass Elasmobranchii Bonaparte, 1838
         01 Order Hexanchiformes Compagno, 1973 - six-gill sharks
         02 Order Heterodontiformes Compagno, 1973 - bullhead sharks
         03 Order Orectolobiformes Compagno, 1973 - carpet sharks
         04 Order Lamniformes Berg, 1958 - mackerel sharks
         05 Order Carcharhiniformes Compagno, 1973 - ground sharks
         06 Order Squaliformes Compagno, 1973 - dogfish sharks
         07 Order Pristiophoriformes Compagno, 1973 - saw sharks
         08 Order Squatiniformes Buen, 1926 - angel sharks
         09 Order Pristiformes - sawfishes
         10 Order Torpediniformes - electric rays
         11 Order Rajiformes Berg, 1940 - skates