Fig. 7. Alston's opossum, <i>Marmosa alstoni</i> (=<i>Micoureus alstoni</i>)
R. K. LaVal
Timm, R. M., Wilson, D. E., Clauson, B. L., LaVal, R. K., Vaughan, C. S. <a rel="nofollow" class="external text" href="https://www.biodiversitylibrary.org/item/164109#page/27/mode/1up">Mammals of the La Selva-Braulio Carrillo Complex, Costa Rica.</a> North American Fauna 75. United States Fish &amp; Wildlife Service. 1989