Dwarf round ray vs Eastern Pygmy Marmoset

Urotrygon nana compared with Cebuella niveiventris

Key Differences

• Dwarf round ray is Near Threatened while Eastern Pygmy Marmoset is Vulnerable.

Taxonomic Classification

Rank	Dwarf round ray	Eastern Pygmy Marmoset
Kingdom same	Animalia (สัตว์)	Animalia (สัตว์)
Phylum same	Chordata (สัตว์มีแกนสันหลัง)	Chordata (สัตว์มีแกนสันหลัง)
Class	Elasmobranchii	Mammalia (สัตว์เลี้ยงลูกด้วยน้ำนม)
Order	Myliobatiformes (อันดับปลากระเบน)	Primates (อันดับวานร)
Family	Urotrygonidae	Callitrichidae
Genus	Urotrygon	Cebuella
Species	Urotrygon nana	Cebuella niveiventris

Evolutionary Relationship

Dwarf round ray and Eastern Pygmy Marmoset share a common ancestor at the Phylum level: Chordata. (สัตว์มีแกนสันหลัง)

Conservation Status

Dwarf round ray

NT — Near Threatened

Eastern Pygmy Marmoset

VU — Vulnerable

Physical Characteristics

Attribute	Dwarf round ray	Eastern Pygmy Marmoset
Diet	—	—
Average Lifespan	—	—
Average Length	—	—
Average Weight	—	—

Habitat & Geographic Range

Dwarf round ray

Eastern Pygmy Marmoset

Habitat

Typically found in diverse terrestrial and aquatic ecosystems.

Range

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