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