[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] †Arthrodira Woodward, 1891 Count: [†*] †2o;33f;59g [11 Apr 2024] Order †Phlyctaeniiformes Count: [†*] †27f;53g [11 Apr 2024] Suborder †Phlyctaenioidei Count: [†*] †5f;12g [8 Apr 2024] Family †Arctaspididae Goujet, 1984 Count: [†*] †1g 1 Genus †Arctaspis Heintz, 1929 Count: -