Dwarf round ray vs Large Oecomys

Urotrygon nana compared with Oecomys superans

Key Differences

• Dwarf round ray is Near Threatened while Large Oecomys is Least Concern.

Taxonomic Classification

Rank	Dwarf round ray	Large Oecomys
Kingdom same	Animalia (Animals)	Animalia (Animals)
Phylum same	Chordata (Chordates)	Chordata (Chordates)
Class	Elasmobranchii	Mammalia (Mammals)
Order	Myliobatiformes (Myliobatiformes)	Rodentia (Rodents)
Family	Urotrygonidae	Cricetidae
Genus	Urotrygon	Oecomys
Species	Urotrygon nana	Oecomys superans

Evolutionary Relationship

Dwarf round ray and Large Oecomys share a common ancestor at the Phylum level: Chordata. (Chordates)

Conservation Status

Dwarf round ray

NT — Near Threatened

Large Oecomys

LC — Least Concern

Physical Characteristics

Attribute	Dwarf round ray	Large Oecomys
Diet	—	—
Average Lifespan	—	—
Average Length	—	—
Average Weight	—	—

Habitat & Geographic Range

Dwarf round ray

Large Oecomys

Habitat

Typically found in diverse terrestrial and aquatic ecosystems.

Range

Distributed across Colombia and Ecuador.