Class Mammalia Linnaeus, 1758 - mammals Order Rodentia Bowdich, 1821 - rodents Suborder Hystricognathi Tullberg, 1899 see Infraorder Hystricognathi Tullberg, 1899 Family Hystricidae Fischer de Waldheim, 1817 - Old World porcupines Genus Hystrix Linnaeus, 1758 - short-tailed porcupines Subgenus Thecurus Lyon, 1907