Reithrodon typicus Waterhouse 1837 Reithrodon typicus Waterhouse 1837, Proc. Zool. Soc. Lond., 1837: 30. Type Locality: Uruguay, Maldonado Dept., Maldonado. Vernacular Names: Naked-soled Conyrat. Synonyms: Reithrodon currentium Thomas 1920. Distribution: EC Argentina (Entre Ríos and Corrientes), Uruguay, and extreme S Brazil (Rio Grande do Sul). Discussion: Although early maintained as distinct from R. auritus (Ellerman, 1941; Gyldenstolpe, 1932), Osgood (1943) placed typicus and all conyrats in a single species, and the genus thereafter was typically viewed as monotypic, whether as R. physodes Olfers, 1818 (Cabrera, 1961; Corbet and Hill, 1991; Hershkovitz, 1955 a, 1959; Honacki et al., 1982) or R. auritus Fischer, 1814 (Musser and Carleton, 1993; Reig, 1978). Specific status reaffirmed by Ortells et al. (1988), who noted substantial differences in diploid and fundamental numbers between R. auritus proper (2n = 34) and typicus (2n = 28), as earlier reported by Freitas et al. (1983 b, as auritus).

Published as part of Wilson, Don E. & Reeder, DeeAnn, 2005, Order Rodentia - Family Cricetidae, pp. 955-1189 in Mammal Species of the World: a Taxonomic and Geographic Reference (3 rd Edition), Volume 2, Baltimore :The Johns Hopkins University Press on page 1165, DOI: 10.5281/zenodo.7316535