Chordata Bateson, 1885 - chordates
Count: -
   Class Elasmobranchii Bonaparte, 1838 see Infraclass Elasmobranchii Bonaparte, 1838
  Count: [f†f] 7o;39f;5g; †4o;22f;4g
     Subclass Selachii see Division Selachii
    Count: [f†f] 6o;36f;4g; †4o;19f;4g
       Order †Acanthodei Gunnell, 1933 see Class Acanthodii Owen, 1846
      Count: [†f] †3f
         Family †Acanthoëssidae see Family Acanthodidae Agassiz, 1844
        Count: -