Order Rodentia - Family Muridae Author Wilson, Don E. Author Reeder, DeeAnn text 2005 The Johns Hopkins University Press Baltimore Mammal Species of the World: a Taxonomic and Geographic Reference (3 rd Edition), Volume 2 1189 1531 book chapter 0-8018-8221-4 10.5281/zenodo.7316535 Chiropodomys calamianensis Taylor 1934 Chiropodomys calamianensis Taylor 1934 , Monogr. Bur. Sci. Manila , Vol. 30: 470 . Type Locality: Philippines , Calamian Isls, Busuanga Isl, Minuit, sea level. Vernacular Names: Palawan Pencil-tailed Tree Mouse . Distribution: Endemic to Greater Palawan Faunal Region on islands Busuanga, Balabac, and Palawan (politically part of the Philippines but faunistically an extension of the Sunda Shelf). Conservation: IUCN – Lower Risk (lc). Discussion: Originally described as the type species of Insulaemus ( Taylor, 1934 ) . In morphology and geographic continuity, C. calamianensis is most closely related to C. major of mainland Borneo (Musser, 1979). Chiropodomys calamianensis joins Maxomys panglima and Palawanomys furvus as the only recorded murines endemic to the Greater Palawan Faunal Region .