Sundamys is a genus of rodent in the Muridae family, mostly in Indonesia and Malaysia.Camacho-Sanchez, M., Jennifer A. Leonard, Yuli Fitriana, Marie-Ka Tilak, and Pierre-Henri Fabre. 2017. "The generic status of Rattus annandalei (Bonhote, 1903) (Rodentia, Murinae) and its evolutionary implications." Journal of Mammalogy, 98: 1340-1355 It contains the following species: Annandale's rat (Sundamys annandalei) Mountain giant Sunda rat (Sundamys infraluteus) Bartel's rat (Sundamys maxi) Müller's giant Sunda rat (Sundamys muelleri)

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