Class Mammalia Linnaeus, 1758 - mammals
Count: 29o;11f;21g; ‡1f
   Subclass Theria Parker & Haswell, 1897
  Count: 28o;9f;21g; ‡1f
     Order Didelphimorphia Gill, 1872
    Count: [*] 1f;17g;87s;65ss
       Family Didelphidae Gray, 1821 - American opossums
      Count: [*] 17g;87s;65ss
         Subfamily Didelphinae Gray, 1821
        Count: [*] 14g;82s;49ss
           Genus Marmosa Gray, 1821 - murine opossums
          Count: [*] 9s;11ss
             Marmosa robinsoni Bangs, 1898 - Robinson's mouse opossum
            Count: -
               Marmosa robinsoni chapmani Allen, 1900
              Count: -