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 Chaetomyinae Thomas, 1897 - thin-spined "porcupine"
           Genus Chaetomys Gray, 1843 - thin-spined "porcupine"
             1 Chaetomys subspinosus (Olfers, 1818) - thin-spined porcupine