Dwarf round ray vs Pacific Spiny-rat

Urotrygon nana compared with Proechimys decumanus

Taxonomic Classification

Rank	Dwarf round ray	Pacific 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 decumanus

Evolutionary Relationship

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

Conservation Status

Dwarf round ray

NT — Near Threatened

Pacific Spiny-rat

NT — Near Threatened

Physical Characteristics

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

Habitat & Geographic Range

Dwarf round ray

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.