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Extensive collecting by the authors has verified the elusive character of Phenacomys albipes. We have been able to locate 28 catalogued museum specimens, including nine at the University of Puget Sound and five at Oregon State University. An additional nine specimens have been recorded in the literature, but we do not know their present location. These few records indicate that albipes is the rarest microtine rodent in North America. There is a corresponding lack of information regarding its life history.
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Maser et al. (1967) studied this question.
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