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 Cestraciontes
      Count: [f†f] 1f; †7f;1g
         1 Suborder †Janassides
        Count: [†f] †5f;1g
         2 Suborder Prosarthri
        Count: [f†f] 1f; †2f