Class Mammalia Linnaeus, 1758 - mammals Order Rodentia Bowdich, 1821 - rodents Suborder Hystricognathi Tullberg, 1899 see Infraorder Hystricognathi Tullberg, 1899 Family Echimyidae Gray, 1825 - spiny rats Subfamily ‡Heteropsomyinae Anthony, 1917 Genus ‡Brotomys Miller, 1916 ‡Brotomys contractus Miller, 1929