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 Lestodelphys halli (Thomas, 1921) TYPE MATERIAL AND TYPE LOCALITY: BMNH 21.6.7.19, the holotype by original designation, consists of the skin, skull, and postcranial skeleton of an adult male collected at “Estancia Madujada” (= Estancia La Madrugada: 47.22° S , 66.45° W ) near Puerto Deseado, Santa Cruz province , Argentina . Jenkins and Knutson (1983: 19) gave the type locality as “Cape Tres Puntas, SE Patagonia” after Thomas (1921b) , but Thomas (1929) subsequently corrected the type locality based on correspondence with the collector. SYNONYMS: None. DISTRIBUTION: Lestodelphys halli is found in the Monte Desert and Patagonian Steppe ecoregions of Argentina , including the provinces of Chubut , La Pampa , Mendoza , Neuquén , Río Negro, and Santa Cruz ( Formoso et al., 2015 : fig. 1). REMARKS: Given the extensive geographic range of Lestodelphys halli and its uniquely austral distribution (approximately from 31° to 48° S ), a phylogeographic analysis of mtDNA sequence data from this species would be of considerable interest. Morphological variation within a large series of specimens was described by Martin (2005) , who also provided a craniodental diagnosis.