The noble mouse-like hamster or the noble calomyscus,Musser, G. G. and M. D. Carleton. 2005. Superfamily Muroidea. pp. 894–1531 in Mammal Species of the World a Taxonomic and Geographic Reference. D. E. Wilson and D. M. Reeder eds. Johns Hopkins University Press, Baltimore. (Calomyscus grandis) is a species of mouse-like hamster from Iran. It is the largest species of Calomyscus and was initially described as a subspecies of Calomyscus bailwardi.Schlitter, D. A. and H. W. Setzer. 1973. New Rodents (Mammalia: Cricetidae, Muridae) from Iran and Pakistan. Proceedings of the Biological Society of Washington, 86:163-174. The animal is found in the region near Tehran and is identifiable based on its large size (74–91 mm) and soft, buffy, brown dorsal pelage. The American Society of Mammalogists as well as Musser and Carleton recognize C. grandis as a distinct species.
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