Class [Mammalia] Linnaeus, 1758 - mammals Order Rodentia Bowdich, 1821 - rodents Family Ctenomyidae Lesson, 1842 - tuco-tucos Genus Ctenomys Blainville, 1826 - tuco-tucos Ctenomys magellanicus Bennett, 1835[1836] - Magellanic tuco-tuco