Class Mammalia Linnaeus, 1758 - mammals
   Order Marsupialia Jameson, 1818 - marsupials see Cohort Marsupialia Jameson, 1818
     Family Didelphidae Gray, 1821 - American opossums
       Genus Marmosa Gray, 1821 - murine opossums
         Subgenus Marmosa Gray, 1821
           Marmosa murina group see Subgenus Marmosa Gray, 1821
             1 Marmosa murina (Linnaeus, 1758) - Linnaeus's mouse opossum
             2 Marmosa rubra Tate, 1931 - red mouse opossum
             3 Marmosa tyleriana Tate, 1931 - Tyleria mouse opossum
             4 Marmosa quichua Thomas, 1899 - Quechuan mouse opossum
             5 Marmosa robinsoni Bangs, 1898 - Robinson's mouse opossum
             6 Marmosa xerophila Handley & Gordon, 1979 - Guajira mouse opossum
             7 Marmosa mexicana Merriam, 1897 - Mexican mouse opossum
             8 Marmosa canescens (J.A. Allen, 1893) - greyish mouse-opossum see Tlacuatzin canescens (Allen, 1893)