The Urar mouse-like hamster or Azerbaijani mouse-like hamster (''Calomyscus urartensis'') is a medium-sized mouse-like hamster from Nakhichevan, Azerbaijan and northwestern Azarbaijan Province, Iran. It is among the better studied representatives of this poorly known genus. The initial species description was based on a unique chromosome number (2n=32; FNa=42) called a

karyotype A karyotype is the general appearance of the complete set of metaphase chromosomes in the cells of a species or in an individual organism, mainly including their sizes, numbers, and shapes. Karyotyping is the process by which a karyotype is disce ...

. The species status has been confirmed with other chromosomal studies and morphometric studies. The species description by Vorontsov ''et al.''Vorontsov, N. N., I. Kartavtseva, and E. G. Potapova. 1979. ystematics of the genus Calomyscus. 1. Karyological differentiation of the sibling species from Transcaucasia and Turkmenia and a review of species in the genus Calomyscus(in Russian). Zoologichaskii Zhurual, 58:1391-1397. and subsequent prompted elevation of several subspecies of '' Calomyscus bailwardi'' to species status.

References

{{Taxonbar, from=Q1767969 Mouse-like hamsters Mammals of Western Asia Mammals of Azerbaijan Fauna of Azerbaijan Fauna of Iran Mammals described in 1979