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Amphinectomys
''Amphinectomys savamis'', also known as the Ucayali Water Rat〔Musser and Carleton, 2005〕 or Amphibious Rat,〔Duff and Lawson, 2004〕 is a rodent from Peruvian Amazonia. It is placed as the only member of genus ''Amphinectomys'' in the tribe Oryzomyini of family Cricetidae. It is similar to ''Nectomys'', but its discoverers considered it to be different enough (with more expansive interdigital webbing and a significantly broader interorbital region) to require its own genus. When it was described as a new genus in 1994, knowledge of the variation within ''Nectomys'' was much more limited than it is now, and it has been suggested that the status of the taxon be re-examined considering this new information. The species's karyotype, 2n = 52, falls within the known range of ''Nectomys'' (2n = 38 - 59).〔
==References==
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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