Class Mammalia Linnaeus, 1758 - mammals Order Rodentia Bowdich, 1821 - rodents Suborder Hystricognathi Tullberg, 1899 see Infraorder Hystricognathi Tullberg, 1899 Family Petromuridae Tullberg, 1899 - dassie rat Genus Petromus Smith, 1831 - dassie rat Petromus typicus A. Smith, 1831 - dassie-rat