Order Didelphimorphia 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 1 3 18 book chapter 0-8018-8221-4 10.5281/zenodo.7316519 Marmosops juninensis Tate 1931 Marmosops juninensis Tate 1931 , Am. Mus. Novit., 493: 13 . Type Locality: "Utcuyacu. Between Tarma and Chanchamayo," Junín , Perú . Vernacular Names: Junin Slender Opossum . Distribution: Chanchamayo Valley of Perú . Discussion: Included under parvidens by Gardner (1993); considered a species by Voss et al. (2001:47).