Class Mammalia Linnaeus, 1758 - mammals Order Rodentia Bowdich, 1821 - rodents Suborder Hystricognathi Tullberg, 1899 see Infraorder Hystricognathi Tullberg, 1899 Family Capromyidae Smith, 1842 - hutias and nutria Subfamily ‡Hexolobodontinae Woods, 1989 see Family Capromyidae Smith, 1842 1 Genus ‡Hexolobodon Miller, 1929