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 ‡Isolobodontinae Woods, 1989 see Family Capromyidae Smith, 1842 Genus ‡Isolobodon Allen, 1916 ‡Isolobodon portoricensis Allen, 1916 - Hispaniolan hutia