Systema Naturae per regna tria naturae: secundum classes, ordines, genera, species, cum characteribus, differentiis, synonymis, locis Author Linnaeus, Carolus text 1758 Laurentius Salvius Stockholm https://archive.org/download/mobot31753000798865/mobot31753000798865.pdf book 2C6327E1-5560-4DB4-B9CA-76A0FA03D975 https://doi.org/10.5962/bhl.title.542 3922206 Didelphis opossum [ spec. nov. ] D. cauda semipilosa, superciliorum regione pallidiore, mammis binis. Philander, Opossum s. Carigueja. Seb. mus. 1. p. 56. t. 36. f. 1, 2. Habitat in America. Abdomen circa mammas contrahitur in marsupium ; pollices postici mutici.