Order Rodentia - Family Cricetidae 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 2 955 1189 book chapter 0-8018-8221-4 10.5281/zenodo.7316535 Thomasomys ladewi Anthony 1926 Thomasomys ladewi Anthony 1926 , Am. Mus . Novit., 239: 1 . Type Locality: Bolivia , La Paz Dept., Río Aceromarca, 10,800 ft ( 3292 m ). Vernacular Names: Ladew's Thomasomys . Distribution: Known only from a restricted region in La Paz Dept., Andes of NW Bolivia . Conservation: IUCN – Lower Risk (lc).