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 ‡Puertoricomys Woods, 1989 1 ‡Puertoricomys corozalus (Williams & Koopman, 1951)