Vertebrata Cuvier, 1812 - vertebrates see Infraphylum Vertebrata Lamarck, 1801
Count: [f†f] 7c;100o;734f; ‡2o;8f; †2c;109o;819f;10g [22 Aug 2017]
   Gnathostomata
  Count: [f†f] 6c;98o;732f; ‡2o;8f; †2c;104o;782f;9g [22 Aug 2017]
     Class Chondrichthyes Huxley, 1880 - cartilaginous fishes
    Count: [f†f] 4o;41f; †13o;33f [19 May 2017]
       Subclass Elasmobranchii Bonaparte, 1838 - shark-like fishes see Infraclass Elasmobranchii Bonaparte, 1838
      Count: [f†f] 3o;38f; †8o;19f [18 May 2017]
         Order †Orodontida Zangerl, 1981 [monotypic] see Order Orodontiformes Zangerl, 1981
        Count: [†f] †1f [15 May 2017]
           Family †Orodontidae de Koninck, 1878
          Count: -