Eastern Pygmy Marmoset vs Round ray

Cebuella niveiventris compared with Irolita waitii

Key Differences

• Eastern Pygmy Marmoset is Vulnerable while Round ray is Least Concern.

Taxonomic Classification

Rank	Eastern Pygmy Marmoset	Round ray
Kingdom same	Animalia (Animals)	Animalia (Animals)
Phylum same	Chordata (Chordates)	Chordata (Chordates)
Class	Mammalia (Mammals)	Elasmobranchii
Order	Primates (Primates)	Rajiformes (Rajiformes)
Family	Callitrichidae	Arhynchobatidae
Genus	Cebuella	Irolita
Species	Cebuella niveiventris	Irolita waitii

Evolutionary Relationship

Eastern Pygmy Marmoset and Round ray share a common ancestor at the Phylum level: Chordata. (Chordates)

Conservation Status

Eastern Pygmy Marmoset

VU — Vulnerable

Round ray

LC — Least Concern

Physical Characteristics

Attribute	Eastern Pygmy Marmoset	Round ray
Diet	—	—
Average Lifespan	—	—
Average Length	—	—
Average Weight	—	—

Habitat & Geographic Range

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.

Round ray