Handley s Slender Opossum vs Simons’s Mouse Opossum

Marmosops handleyi compared with Marmosa simonsi

Key Differences

• Handley s Slender Opossum is Critically Endangered while Simons’s Mouse Opossum is Not Evaluated.

Taxonomic Classification

Rank	Handley s Slender Opossum	Simons’s Mouse Opossum
Kingdom same	Animalia (Animals)	Animalia (Animals)
Phylum same	Chordata (Chordates)	Chordata (Chordates)
Class same	Mammalia (Mammals)	Mammalia (Mammals)
Order same	Didelphimorphia (Didelphimorphia)	Didelphimorphia (Didelphimorphia)
Family same	Didelphidae	Didelphidae
Genus	Marmosops	Marmosa
Species	Marmosops handleyi	Marmosa simonsi

Evolutionary Relationship

Handley s Slender Opossum and Simons’s Mouse Opossum share a common ancestor at the Family level: Didelphidae.

Conservation Status

Handley s Slender Opossum

CR — Critically Endangered

Simons’s Mouse Opossum

NE — Not Evaluated

Physical Characteristics

Attribute	Handley s Slender Opossum	Simons’s Mouse Opossum
Diet	—	—
Average Lifespan	—	—
Average Length	—	—
Average Weight	—	—

Habitat & Geographic Range

Handley s Slender Opossum

Habitat

Found across multiple habitat types including tropical and subtropical moist broadleaf forests, tropical and subtropical dry broadleaf forests, and montane grasslands and shrublands, among 4 distinct biome types spanning the Neotropic and Oceanian realms. Populations are also found in montane and highland environments at higher elevations.

Range

Found in Colombia. Currently classified as Critically Endangered on the IUCN Red List, this species faces significant conservation challenges across its range.

Simons’s Mouse Opossum

Habitat

Typically found in diverse terrestrial and aquatic ecosystems.

Range

Found in Ecuador.