Order Rodentia - Family Ctenomyidae Author Wilson, Don E. Author Reeder, DeeAnn text 2005 The Johns Hopkins University Press Baltimore Mammal Species of the World: a Taxonomic and Geographic Reference (3 rd Edition), Volume 2 1560 1570 book chapter 0-8018-8221-4 10.5281/zenodo.7316535 Ctenomys magellanicus Bennett 1835 Ctenomys magellanicus Bennett 1835 , Proc. Zool. Soc. Lond., 1835: 190 . Type Locality: Chile , Magallanes , Bahia de San Gregorio. Vernacular Names: Magellanic Tuco-tuco . Subspecies: : Subspecies Ctenomys magellanicus subsp. magellanicus Bennett 1835 Subspecies Ctenomys magellanicus subsp. dicki Osgood 1943 Subspecies Ctenomys magellanicus subsp. fueginus Philippi 1880 Subspecies Ctenomys magellanicus subsp. osgoodi Allen 1905 Distribution: Extreme S Chile and S Argentina . Conservation: IUCN – Vulnerable; reduced in numbers by sheep grazing. Discussion: Osgood (1943) included fodax but see coments under that taxon. Karyotype has 2n=34-36 and FN=64 ( Gallardo, 1991 ).