"Didelphidae" . . . . . "Mammalia" . . . "Didelphis virginiana Kerr 1792" . . . . "Animalia" . "Kerr 1792" . . . . "Didelphimorphia" . . . . . . "Chordata" . . . . "Didelphis" . "Didelphis virginiana" . . . "Virginia Opossum" .