An Annotated Checklist Of Recent Opossums (Mammalia: Didelphidae) Author Voss, Robert S. text Bulletin of the American Museum of Natural History 2022 2022-04-04 2022 455 1 77 https://bioone.org/journals/bulletin-of-the-american-museum-of-natural-history/volume-455/issue-1/0003-0090.455.1.1/An-Annotated-Checklist-of-Recent-Opossums-Mammalia-Didelphidae/10.1206/0003-0090.455.1.1.full journal article 10.1206/0003-0090.455.1.1 0003-0090 Cryptonanus unduaviensis ( Tate, 1931 ) TYPE MATERIAL AND TYPE LOCALITY: AMNH 72563, the holotype by original designation, consists of the skin and skull of an adult male collected at Pitiguaya (ca. 16.35° S , 67.78° W ; 1740 m ), La Paz department, Bolivia . SYNONYMS: None. DISTRIBUTION: Cryptonanus unduaviensis is known from savannas and other open habitats in southeastern Peru ( Madre de Dios ), eastern Bolivia , southwestern Brazil ( Mato Grosso ), and western Paraguay ( Medina et al., 2016 ; Fegies et al., 2021 : fig. 1). REMARKS: For an emended description see Voss et al. (2005) , who also tabulated measurement data from eight referred specimens. Phylogenetic analyses of DNA sequence datasets (e.g., Dias et al., 2016 ; Teta and Díaz-Nieto, 2019; Fegies et al., 2021 ) have consistently recovered Cryptonanus unduaviensis as the sister species to a clade that contains all the other species in this genus.