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 Mammalia Linnaeus, 1758 - mammals
               Subclass Eutheria Gill, 1872 see Infraclass Eutheria Gill, 1872
                 Order Rodentia Bowdich, 1821 - rodents
                   Suborder Hystricomorpha Brandt, 1855
                     Superfamily Hystricoidea Fischer de Waldheim, 1817
                       Family Hystricidae Fischer de Waldheim, 1817 - Old World porcupines
                         Genus Thecurus Lyon, 1907 see Genus Hystrix Linnaeus, 1758
                           Thecurus crassispinis (Günther, 1876) see Hystrix crassispinis (Günther, 1877)
                           Thecurus pumilis (Günther, 1879) see Hystrix pumilis
                           Thecurus sumatrae Lyon, 1907 see Hystrix sumatrae (Lyon, 1907)