Dwarf round ray vs Greater Pencil-tailed Tree Mouse

Urotrygon nana compared with Chiropodomys major

Key Differences

• Dwarf round ray is Near Threatened while Greater Pencil-tailed Tree Mouse is Least Concern.

Taxonomic Classification

Rank	Dwarf round ray	Greater Pencil-tailed Tree Mouse
Kingdom same	Animalia (Animals)	Animalia (Animals)
Phylum same	Chordata (Chordates)	Chordata (Chordates)
Class	Elasmobranchii	Mammalia (Mammals)
Order	Myliobatiformes (Myliobatiformes)	Rodentia (Rodents)
Family	Urotrygonidae	Muridae (Mice & Rats)
Genus	Urotrygon	Chiropodomys
Species	Urotrygon nana	Chiropodomys major

Evolutionary Relationship

Dwarf round ray and Greater Pencil-tailed Tree Mouse share a common ancestor at the Phylum level: Chordata. (Chordates)

Conservation Status

Dwarf round ray

NT — Near Threatened

Greater Pencil-tailed Tree Mouse

LC — Least Concern

Physical Characteristics

Attribute	Dwarf round ray	Greater Pencil-tailed Tree Mouse
Diet	—	—
Average Lifespan	—	—
Average Length	—	—
Average Weight	—	—

Habitat & Geographic Range

Dwarf round ray

Greater Pencil-tailed Tree Mouse

Habitat

Typically found in diverse terrestrial and aquatic ecosystems.