[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 †Placodermi McCoy, 1848
        Count: [†*] †13o;59f;111g [11 Apr 2024]
           Order †Ptyctodontiformes [monotypic]
          Count: [†*] †1f;2g [4 Apr 2024]
             Family †Ptyctodontidae Woodward, 1891
            Count: [†*] †2g
               1 Genus †Ptyctodus Pander, 1858, nom. protect.
              Count: -
               2 Genus †Aulacosteus Eichwald, 1846, nom. oblit. see Genus Ptyctodus Pander, 1858, nom. protect.
              Count: -