Dwarf round ray vs Linnaeus's mouse opossum

Urotrygon nana compared with Marmosa murina

Key Differences

• Dwarf round ray is Near Threatened while Linnaeus's mouse opossum is Least Concern.

Taxonomic Classification

Rank	Dwarf round ray	Linnaeus's mouse opossum
Kingdom same	Animalia (Animals)	Animalia (Animals)
Phylum same	Chordata (Chordates)	Chordata (Chordates)
Class	Elasmobranchii	Mammalia (Mammals)
Order	Myliobatiformes (Myliobatiformes)	Didelphimorphia (Didelphimorphia)
Family	Urotrygonidae	Didelphidae
Genus	Urotrygon	Marmosa
Species	Urotrygon nana	Marmosa murina

Evolutionary Relationship

Dwarf round ray and Linnaeus's mouse opossum share a common ancestor at the Phylum level: Chordata. (Chordates)

Conservation Status

Dwarf round ray

NT — Near Threatened

Linnaeus's mouse opossum

LC — Least Concern

Physical Characteristics

Attribute	Dwarf round ray	Linnaeus's mouse opossum
Diet	—	—
Average Lifespan	—	—
Average Length	—	—
Average Weight	—	—

Habitat & Geographic Range

Dwarf round ray

Linnaeus's mouse opossum

Habitat

Typically found in diverse terrestrial and aquatic ecosystems.

Range

Distributed across Colombia and Venezuela.