Class [Mammalia] Linnaeus, 1758 - mammals
   Order Rodentia Bowdich, 1821 - rodents
     Family Echimyidae Gray, 1825 - spiny rats
       Genus Proechimys Allen, 1899 - spiny rats
         01 Proechimys albispinus (I. Geoffroy, 1838) see Trinomys albispinus (I. Geoffroy, 1838)
         02 Proechimys amphichoricus Moojen, 1948
         03 Proechimys bolivianus Thomas, 1901
         04 Proechimys brevicauda (Günther, 1877)
         05 Proechimys canicollis (J.A. Allen, 1899)
         06 Proechimys chrysaeolus (Thomas, 1898)
         07 Proechimys cuvieri Petter, 1978
         08 Proechimys decumanus (Thomas, 1899)
         09 Proechimys dimidiatus (Günther, 1877) see Trinomys dimidiatus (Günther, 1877)
         10 Proechimys goeldii Thomas, 1905
         11 Proechimys guairae Thomas, 1901
         12 Proechimys gularis Thomas, 1911
         13 Proechimys guyannensis (E. Geoffroy, 1803) see Proechimys cayennensis (Desmarest, 1817)
         14 Proechimys hoplomyoides (Tate, 1939)
         15 Proechimys iheringi Thomas, 1911 see Trinomys iheringi (Thomas, 1911)
         16 Proechimys longicaudatus (Rengger, 1830)
         17 Proechimys magdalenae (Hershkovitz, 1948)
         18 Proechimys mincae (J.A. Allen, 1899)
         19 Proechimys myosuros (Lichtenstein, 1820) see Trinomys myosuros (Lichtenstein, 1820)
         20 Proechimys oconnelli J.A. Allen, 1913
         21 Proechimys oris Thomas, 1904
         22 Proechimys poliopus Osgood, 1914
         23 Proechimys quadruplicatus Hershkovitz, 1948
         24 Proechimys semispinosus (Tomes, 1860) - Tomes' spiny rat
         25 Proechimys setosus (Desmarest, 1817) see Trinomys setosus (Desmarest, 1817)
         26 Proechimys simonsi Thomas, 1900
         27 Proechimys steerei Goldman, 1911
         28 Proechimys trinitatis (J.A. Allen & Chapman, 1893)
         29 Proechimys urichi (J.A. Allen, 1899)