Dwarf round ray vs Hammond's Oryzomys

Urotrygon nana compared with Mindomys hammondi

Key Differences

• Dwarf round ray is Near Threatened while Hammond's Oryzomys is Endangered.

Taxonomic Classification

Rank	Dwarf round ray	Hammond's Oryzomys
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	Mindomys
Species	Urotrygon nana	Mindomys hammondi

Evolutionary Relationship

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

Conservation Status

Dwarf round ray

NT — Near Threatened

Hammond's Oryzomys

EN — Endangered

Physical Characteristics

Attribute	Dwarf round ray	Hammond's Oryzomys
Diet	—	—
Average Lifespan	—	—
Average Length	—	—
Average Weight	—	—

Habitat & Geographic Range

Dwarf round ray

Hammond's Oryzomys

Habitat

Typically found in diverse terrestrial and aquatic ecosystems.

Range

Found in Ecuador. Currently classified as Endangered on the IUCN Red List, this species faces significant conservation challenges across its range.