[Phylum] Chordata Bateson, 1885 - chordates
Count: [*†*] 4c;88o;589f;14g; †7c;127o;597f;967g;1s
   Subphylum Craniata auct.
  Count: [*†*] 4c;88o;589f;14g; †7c;127o;597f;967g;1s
     Infraphylum Vertebrata Lamarck, 1801 - vertebrates
    Count: [*†*] 3c;87o;588f;14g; †7c;126o;596f;966g;1s
       Superclass Gnathostomata Gegenbaur, 1874 - jawed vertebrates
      Count: [*†*] 2c;86o;585f;14g; †2c;97o;496f;810g;1s
         Class Chondrichthyes Huxley, 1880 - cartilaginous fishes
        Count: [f†f] 14o;67f;6g; †30o;105f;153g [6 May 2024]
           Subclass Holocephali Bonaparte, 1832
          Count: [*†*] 1o;3f; †12o;31f;38g [2 May 2024]
             Order †Eugeneodontiformes Zangerl, 1981
            Count: [†*] †4f;5g [1 May 2024]
               Suborder †Edestoidei
              Count: [†*] †2f;3g [1 May 2024]
                 Family †Helicoprionidae Karpinsky, 1911
                Count: [†*] †2g
                   1 Genus †Helicoprion Karpinsky, 1899
                  Count: -
                   2 Genus †Agassizodus St. John & Worthen, 1875
                  Count: -