Niceforo Maria’s Oldfield Mouse vs Simons’s Mouse Opossum

Thomasomys nicefori compared with Marmosa simonsi

Key Differences

• Niceforo Maria’s Oldfield Mouse is Least Concern while Simons’s Mouse Opossum is Not Evaluated.

Taxonomic Classification

Rank	Niceforo Maria’s Oldfield Mouse	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	Cricetidae	Didelphidae
Genus	Thomasomys	Marmosa
Species	Thomasomys nicefori	Marmosa simonsi

Evolutionary Relationship

Niceforo Maria’s Oldfield Mouse and Simons’s Mouse Opossum share a common ancestor at the Class level: Mammalia. (Mammals)

Conservation Status

Niceforo Maria’s Oldfield Mouse

LC — Least Concern

Simons’s Mouse Opossum

NE — Not Evaluated

Physical Characteristics

Attribute	Niceforo Maria’s Oldfield Mouse	Simons’s Mouse Opossum
Diet	—	—
Average Lifespan	—	—
Average Length	—	—
Average Weight	—	—

Habitat & Geographic Range

Niceforo Maria’s Oldfield Mouse

Habitat

Typically found in diverse terrestrial and aquatic ecosystems.

Range

Found in Colombia.

Simons’s Mouse Opossum

Habitat

Typically found in diverse terrestrial and aquatic ecosystems.

Range

Found in Ecuador.