Class Mammalia Linnaeus, 1758 - mammals
   Order Rodentia Bowdich, 1821 - rodents
     Suborder Hystricognathi Tullberg, 1899 see Infraorder Hystricognathi Tullberg, 1899
       Family Erethizontidae Bonaparte, 1845 - New World porcupines
         Genus Sphiggurus Cuvier, 1825 see Subgenus Sphiggurus F. Cuvier, 1825
           1 Sphiggurus insidiosus (Kuhl, 1820) see Coendou insidiosus (Kuhl, 1820)
           2 Sphiggurus mexicanus (Kerr, 1792) see Coendou mexicanus
           3 ‡Sphiggurus pallidus (Waterhouse, 1848) see Coendou pallidus
           4 Sphiggurus spinosus (F. Cuvier, 1823) see Coendou spinosus
           5 Sphiggurus vestitus (Thomas, 1899) see Coendou vestitus Thomas, 1899
           6 Sphiggurus villosus (F. Cuvier, 1823) see Coendou villosus