Dwarf round ray vs Guyenne Spiny-rat

Urotrygon nana compared with Proechimys guyannensis

Key Differences

• Dwarf round ray is Near Threatened while Guyenne Spiny-rat is Least Concern.

Taxonomic Classification

Rank	Dwarf round ray	Guyenne Spiny-rat
Kingdom same	Animalia (Animals)	Animalia (Animals)
Phylum same	Chordata (Chordates)	Chordata (Chordates)
Class	Elasmobranchii	Mammalia (Mammals)
Order	Myliobatiformes (Myliobatiformes)	Rodentia (Rodents)
Family	Urotrygonidae	Echimyidae
Genus	Urotrygon	Proechimys
Species	Urotrygon nana	Proechimys guyannensis

Evolutionary Relationship

Dwarf round ray and Guyenne Spiny-rat share a common ancestor at the Phylum level: Chordata. (Chordates)

Conservation Status

Dwarf round ray

NT — Near Threatened

Guyenne Spiny-rat

LC — Least Concern

Physical Characteristics

Attribute	Dwarf round ray	Guyenne Spiny-rat
Diet	—	—
Average Lifespan	—	—
Average Length	—	—
Average Weight	—	—

Habitat & Geographic Range

Dwarf round ray

Guyenne Spiny-rat

Habitat

Typically found in diverse terrestrial and aquatic ecosystems.

Range

Found in Venezuela.