Vertebrata Cuvier, 1812 - vertebrates
   Gnathostomata
     Class Chondrichthyes Huxley, 1880 - cartilaginous fishes
       Subclass Elasmobranchii Bonaparte, 1838 - shark-like fishes
         Order †Eugeneodontida see Order Eugeneodontiformes Zangerl, 1981
           Superfamily †Edestoidea Jaekel, 1899
             1 Family †Agassizodontidae Zangerl, 1981
             2 Family †Edestidae Jaekel, 1899