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 7161371 Monodelphis ( Monodelphis ) brevicaudata (Erxleben, 1777) TYPE MATERIAL AND TYPE LOCALITY: BMNH 67.4.12.540, the holotype by monotypy, consists of the fluid-preserved body and extracted skull of an adult female that was probably collected near Kartabo in northwestern Guyana ( Voss et al., 2001: 57 ). SYNONYMS: brachyuros Schreber, 1777 ; dorsalis Allen, 1904 ; hunteri Waterhouse, 1841; orinoci Thomas, 1899 ; sebae Gray, 1827. DISTRIBUTION: Monodelphis brevicaudata , in the strict sense that this species is now understood, occurs in Venezuela (south and east of the Orinoco), northwestern Guyana , and northern Brazil (north of the Rio Negro and west of the Rio Branco; Pavan et al., 2012 : fig 6). REMARKS: Abreu et al. (2017) commented on the difficulty of phenotypically distinguishing Monodelphis brevicaudata from M. arlindoi along the lower Rio Jufari in Roraima , Brazil . Because the distinction between these species was largely based on mtDNA sequencing ( Pavan et al., 2012 ), genetic evidence from nuclear markers would be welcome to test the hypothesis that these are distinct species.