Fatspine spurdog vs Gray-bellied Night Monkey

Squalus crassispinus compared with Aotus lemurinus

Key Differences

• Fatspine spurdog is Least Concern while Gray-bellied Night Monkey is Vulnerable.

Taxonomic Classification

Rank	Fatspine spurdog	Gray-bellied Night Monkey
Kingdom same	Animalia (Animals)	Animalia (Animals)
Phylum same	Chordata (Chordates)	Chordata (Chordates)
Class	Elasmobranchii	Mammalia (Mammals)
Order	Squaliformes (Squaliformes)	Primates (Primates)
Family	Squalidae	Aotidae
Genus	Squalus	Aotus
Species	Squalus crassispinus	Aotus lemurinus

Evolutionary Relationship

Fatspine spurdog and Gray-bellied Night Monkey share a common ancestor at the Phylum level: Chordata. (Chordates)

Conservation Status

Fatspine spurdog

LC — Least Concern

Gray-bellied Night Monkey

VU — Vulnerable

Physical Characteristics

Attribute	Fatspine spurdog	Gray-bellied Night Monkey
Diet	—	—
Average Lifespan	—	—
Average Length	—	—
Average Weight	—	—

Habitat & Geographic Range

Fatspine spurdog

Gray-bellied Night Monkey

Habitat

Typically found in diverse terrestrial and aquatic ecosystems.

Range

Distributed across Colombia, Ecuador, and Venezuela. Currently classified as Vulnerable on the IUCN Red List, this species faces significant conservation challenges across its range.