Class [Mammalia] Linnaeus, 1758 - mammals
   Order Rodentia Bowdich, 1821 - rodents
     Family Hystricidae Fischer de Waldheim, 1817 - Old World porcupines
       1 Genus Hystrix Linnaeus, 1758 - short-tailed porcupines
       2 Genus Atherurus Cuvier, 1829 - brush-tailed porcupines
       3 Genus Trichys Günther, 1877 - long-tailed porcupine