Pacific Spiny-rat vs Simons’s Mouse Opossum

Proechimys decumanus compared with Marmosa simonsi

Key Differences

• Pacific Spiny-rat is Near Threatened while Simons’s Mouse Opossum is Not Evaluated.

Taxonomic Classification

Rank	Pacific Spiny-rat	Simons’s Mouse Opossum
Kingdom same	Animalia (Animals)	Animalia (Animals)
Phylum same	Chordata (Chordates)	Chordata (Chordates)
Class same	Mammalia (Mammals)	Mammalia (Mammals)
Order	Rodentia (Rodents)	Didelphimorphia (Didelphimorphia)
Family	Echimyidae	Didelphidae
Genus	Proechimys	Marmosa
Species	Proechimys decumanus	Marmosa simonsi

Evolutionary Relationship

Pacific Spiny-rat and Simons’s Mouse Opossum share a common ancestor at the Class level: Mammalia. (Mammals)

Conservation Status

Pacific Spiny-rat

NT — Near Threatened

Simons’s Mouse Opossum

NE — Not Evaluated

Physical Characteristics

Attribute	Pacific Spiny-rat	Simons’s Mouse Opossum
Diet	—	—
Average Lifespan	—	—
Average Length	—	—
Average Weight	—	—

Habitat & Geographic Range

Pacific Spiny-rat

Habitat

Typically found in diverse terrestrial and aquatic ecosystems.

Range

Found in Ecuador. Listed as Near Threatened, this species requires ongoing monitoring to prevent population decline.

Simons’s Mouse Opossum

Habitat

Typically found in diverse terrestrial and aquatic ecosystems.

Range

Found in Ecuador.

Shared Countries

Both species can be found in 1 countries:

🇪🇨 Ecuador