Kingdom [Animalia] Linnaeus, 1758 - animals
   Subkingdom Metazoa Haeckel, 1874 see Kingdom Animalia Linnaeus, 1758
     Division Eumetazoa Butschli, 1910 see Subkingdom Eumetazoa Butschli, 1910
       Subdivision Bilateralia
         Phylum Chordata Bateson, 1885 - chordates
           Subphylum Vertebrata Cuvier, 1812 - vertebrates
             Class Amphibia Linnaeus, 1758 - amphibians see Class Amphibia Gray, 1825
               Subclass Urodelomorpha Säve-Söderbergh, 1934 see Order Urodela Dumeril, 1806
                 Order Caudata Scopoli, 1777
                   Suborder Sirenoidea Goodrich, 1930 see Order Caudata Scopoli, 1777
                     Family Sirenidae Gray, 1825
                       Genus Pseudobranchus Gray, 1825
                       Genus Siren Linnaeus, 1766