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 Monodelphis dimidiata Wagner 1847 Monodelphis dimidiata Wagner 1847 , Abh. Akad. Wiss. Munchen, 5 (1): 151 . Type Locality: Uruguay , Maldonado , " Maldonado am la Plata." . Vernacular Names: Yellow-sided Opossum . Synonyms: Monodelphis fosteri Thomas 1924 . Distribution: Uruguay , SE Brazil , and NE Argentina . Conservation: IUCN – Lower Risk (nt). Discussion: See Pine et al. (1985) . Peramys brachyurus as used by Lesson, 1842 (= Didelphys dimidiata Wagner, 1847 ), is the type species of Peramys Lesson, 1842 . Didelphys dimidiata Wagner is the type species of Minuania Cabrera, 1919 ; therefore Minuania Cabrera is a junior objective synonym of Peramys Lesson.