Class [Mammalia] Linnaeus, 1758 - mammals
   Order Rodentia Bowdich, 1821 - rodents
     Family Echimyidae Gray, 1825 - spiny rats
       Genus Echimys Cuvier, 1809 - arboreal spiny rats
         01 Echimys armatus (I. Geoffroy, 1838) see Makalata armata (I. Geoffroy, 1830)
         02 Echimys blainvillei (F. Cuvier, 1837) see Phyllomys blainvilii (Jourdan, 1837)
         03 Echimys braziliensis (Waterhouse, 1848)
         04 Echimys chrysurus (Zimmermann, 1780) - arboreal white-faced spiny rat
         05 Echimys dasythrix (Hensel, 1872) see Phyllomys dasythrix Hensel, 1872
         06 Echimys grandis (Wagner, 1845) see Toromys grandis (Wagner, 1845)
         07 Echimys macrurus (Wagner, 1842) see Makalata macrura (Wagner, 1842)
         08 Echimys nigrispinus (Wagner, 1842) see Phyllomys nigrispinus (Wagner, 1842)
         09 Echimys saturnus Thomas, 1928
         10 Echimys semivillosus (I. Geoffroy, 1838) see Pattonomys semivillosus (I. Geoffroy, 1838)
         11 Echimys unicolor (Wagner, 1842) see Phyllomys unicolor (Wagner, 1842)