Shaw Mayer's water rat

Shaw Mayer's water rat (Baiyankamys shawmayeri) is a semiaquatic species of rodent in the family Muridae. According to its Wikipedia article it is found in the mountains of Papua New Guinea. The article also notes a local name, kuypep kuykuy-sek, used in the Kalam language of Papua New Guinea. The only reference cited is the entry on the superfamily Muroidea by Musser and Carleton in Mammal Species of the World (2005). The source gives no figures on size, diet or population and no conservation assessment, so this entry records only the animal's identity, its semiaquatic way of life, its mountain range in Papua New Guinea and its family.