[Kingdom] Animalia Linnaeus, 1758 - animals
   Grade Enterozoa
     Grade Cœlomata
       Phylum Vertebrata (Lamarck, 1801)
         Branch Craniata Linnaeus, 1758
           Grade Gnathostoma
             Subgrade Heterodactyla branchiata
               Class Pisces Linnaeus, 1758 see Superclass Pisces Linnaeus, 1758
                 Subclass Teleostei Müller, 1845 see Infraclass Teleostei Müller, 1845
                   Branch Plectognathi [monotypic]
                     Order Plectognathi see Order Tetraodontiformes Berg, 1937
                       Genus Ostracion Linnaeus, 1758