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| | Didelphidae |
 | | <==o Didelphidae Gray, 1821 [Didelphinae Gray, 1821 sensu McKenna and Bell, 1997] (opossums; opossumit) --+--+-- Marmosa murina (Linnaeus, 1758) (hiiriopossumi) |
 | | incanus (gray slender mouse opossum) `--+-- Metachirus nudicaudatus (Geoffroy, 1803) Burmeister, 1854 [Metachirinae Reig, Kirsch and Marshall, 1985 sensu Hershkovitz, 1992; Didelphidae: Didelphinae: Metachirini Reig, Kirsch and Marshall, 1985 sensu McKenna and Bell, 1997] (brown foureyed opossum) `--+--o Monodelphis Burnett, 1830 [taxonomic history] U. Mioc. |
 | | Voss, R. S., Gardner, A. and Jansa, S. A., 2004: On the relationships of “Marmosa” formosa Shamel, 1930 (Marsupialia: Didelphidae), a phylogenetic puzzle from the Chaco of northern Argentina. |
| www.fmnh.helsinki.fi /users/haaramo/Metazoa/Deuterostoma/Chordata/Synapsida/Metatheria/Notometatheria/didelphoidea/Didelphidae.html (629 words) |
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