Dwarf round ray vs Greedy Olalla Rat

Urotrygon nana compared with Olallamys edax

Key Differences

• Dwarf round ray is Near Threatened while Greedy Olalla Rat is Data Deficient.

Taxonomic Classification

Rank	Dwarf round ray	Greedy Olalla 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	Olallamys
Species	Urotrygon nana	Olallamys edax

Evolutionary Relationship

Dwarf round ray and Greedy Olalla Rat share a common ancestor at the Phylum level: Chordata. (Chordates)

Conservation Status

Dwarf round ray

NT — Near Threatened

Greedy Olalla Rat

DD — Data Deficient

Physical Characteristics

Attribute	Dwarf round ray	Greedy Olalla Rat
Diet	—	—
Average Lifespan	—	—
Average Length	—	—
Average Weight	—	—

Habitat & Geographic Range

Dwarf round ray

Greedy Olalla Rat

Habitat

Typically found in diverse terrestrial and aquatic ecosystems.

Range

Found in Venezuela.