Class Mammalia Linnaeus, 1758 - mammals
   Order Rodentia Bowdich, 1821 - rodents
     Suborder Sciurognathi (Tullberg, 1899) see Suborder Sciuromorpha Brandt, 1855
       Family Muridae Batsch, 1788 - rats, mice, hamsters, voles, lemmings, and gerbils
         Subfamily Calomyscinae Vorontsov, Kartavtseva & Potapova, 1978 see Family Calomyscidae Vorontsov & Potapova, 1979
           Genus Calomyscus Thomas, 1905 - mouse-like hamsters
             1 Calomyscus bailwardi Thomas, 1905 - mouselike hamster
             2 Calomyscus baluchi Thomas, 1920
             3 Calomyscus hotsoni Thomas, 1920
             4 Calomyscus mystax Kashkarov, 1925
             5 Calomyscus tsolovi Peshev, 1991
             6 Calomyscus urartensis Vorontsov & Kartavseva, 1979