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Amargosa vole
The Amargosa vole (''Microtus californicus scirpensis'') is one of 17 subspecies of the California vole (''M. californicus''). The most closely related subspecies is ''M. californicus vallicola''.〔Neuwald, J. L. 2010. Population isolation exacerbates conservation genetic concerns in the endangered Amargosa vole, ''Microtus californicus scirpensis''. Biological Conservation 143: 2028-2038.〕
== Description ==
The Amargosa vole is recognized by the characteristic long, low profile of all voles. It has gray feet and whiskers, and its back is covered by dark, blackish fur. This subspecies has a bicolored tail that exhibits black on the top and gray on the underside.〔Cudworth, N. L., and J. L. Koprowski. 2010. ''Microtus californicus'' (Rodentia: Cricetidae). Mammalian Species 42: 230-243.〕 They are a sexually dimorphic species, in which the males are longer and heavier than the females of the subspecies.〔 The dental formula of Amargosa voles is 1/1, 0/0, 0/0, 3/3, meaning there is one incisor in each of the upper and lower quadrants, no canines or premolars, and three molars in each of the upper and lower quadrants.〔 They are characterized by an opening in the palatine bone directly behind the incisors.〔Bailey, V. 1900. Revision of American voles of the genus Microtus. North American Fauna, U.S. Department of Agriculture.〕
抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』
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