Class Mammalia Linnaeus, 1758 - mammals
   Order Didelphimorphia Gill, 1872
     Family Didelphidae Gray, 1821 - American opossums
       Subfamily Didelphinae Gray, 1821
         Genus Marmosa Gray, 1821 - murine opossums
           1 Marmosa andersoni Pine, 1972 - heavy-browed mouse opossum
           2 Marmosa canescens (J.A. Allen, 1893) - greyish mouse-opossum see Tlacuatzin canescens (Allen, 1893)
           3 Marmosa lepida (Thomas, 1888) - rufous mouse opossum
           4 Marmosa mexicana Merriam, 1897 - Mexican mouse opossum
           5 Marmosa murina (Linnaeus, 1758) - Linnaeus's mouse opossum
           6 Marmosa robinsoni Bangs, 1898 - Robinson's mouse opossum
           7 Marmosa rubra Tate, 1931 - red mouse opossum
           8 Marmosa tyleriana Tate, 1931 - Tyleria mouse opossum
           9 Marmosa xerophila Handley & Gordon, 1979 - Guajira mouse opossum