Superphylum Deuterostomia Grobben, 1908 - deuterostomes see Infrakingdom Deuterostomia Grobben, 1908
Count: [f†f] 1p;7c;86o;538f; †1p;8c;99o;293f;53g;1s [4 May 2025]
   Phylum Chordata Bateson, 1885 - chordates
  Count: [f†f] 7c;86o;538f; †7c;99o;292f;53g;1s [4 May 2025]
     Subphylum Craniata auct.
    Count: [f†f] 4c;85o;536f; †6c;99o;292f;49g;1s [4 May 2025]
       Infraphylum Vertebrata Lamarck, 1801 - vertebrates
      Count: [f†f] 3c;84o;535f; †6c;99o;292f;49g;1s [4 May 2025]
         Superclass Gnathostomata Gegenbaur, 1874 - jawed vertebrates
        Count: [f†f] 2c;83o;532f; †2c;81o;255f;48g
           Eugnathostomata
          Count: [f†f] 2c;83o;532f; †1c;74o;230f;48g [4 May 2025]
             Grade Chondrichthyomorphi [monotypic]
            Count: [f†f] 1c;14o;54f; †27o;74f;22g [26 Mar 2025]
               Class Chondrichthyes Huxley, 1880 - cartilaginous fishes
              Count: [f†f] 14o;54f; †27o;74f;22g [26 Mar 2025]
                 Subclass Holocephali Bonaparte, 1832
                Count: [f†f] 1o;3f; †12o;28f [24 Mar 2025]
                   [stem] Order †Petalodontiformes Zangerl, 1981
                  Count: [†f] †4f [23 Mar 2025]
                     Family †Petalodontidae Newberry & Worthen, 1866
                    Count: -