Rosalinda's Oldfield mouse (Thomasomys rosalinda) is a species of rodent in the family Cricetidae. It is found only in Peru.
References
Musser, G. G. and M. D. Carleton, 2005. "Superfamily Muroidea", pp. 894–1531, Mammal Species of the World: A Taxonomic and Geographic Reference. D. E. Wilson and D. M. Reeder eds. Johns Hopkins University Press, Baltimore.