The single-striped opossum is only known from two individuals collected from southeastern Brazil in 1821, and northeastern Argentina in 1899.
Multiple attempts to find the species through the 20th century failed, and the species remains mysterious. They are in the family Delphidae, which is the lineage of American opossums, the only non-Australian marsupials, which are known in the fossil record from 70-80 million years ago – before dinosaurs went extinct. Previously widespread, opossums went extinct through Europe and North America, being left only in South America by 10-20 million years ago. Around 3 million years ago opossums re-entered North America when the Isthmus of Panama reformed, connecting North and South America.
- Order: Didelphimorphia
- Family: Didelphidae
- Population: Unknown
- Trend: unknown
Only known from south-eastern Brazil and north-eastern Argentina.
Habitat and Ecology
Little is known of the habitat and ecology of this species, though based on other members of its genus, their activity is probably predominantly terrestrial.