Gulf smoothhound vs Napo Spiny-rat

Mustelus sinusmexicanus compared with Proechimys quadruplicatus

Taxonomic Classification

Rank	Gulf smoothhound	Napo Spiny-rat
Kingdom same	Animalia (Animals)	Animalia (Animals)
Phylum same	Chordata (Chordates)	Chordata (Chordates)
Class	Chondrichthyes (Cartilaginous Fish)	Mammalia (Mammals)
Order	Carcharhiniformes (Ground Sharks)	Rodentia (Rodents)
Family	Triakidae	Echimyidae
Genus	Mustelus	Proechimys
Species	Mustelus sinusmexicanus	Proechimys quadruplicatus

Evolutionary Relationship

Gulf smoothhound and Napo Spiny-rat share a common ancestor at the Phylum level: Chordata. (Chordates)

Conservation Status

Gulf smoothhound

LC — Least Concern

Napo Spiny-rat

LC — Least Concern

Physical Characteristics

Attribute	Gulf smoothhound	Napo Spiny-rat
Diet	—	—
Average Lifespan	—	—
Average Length	—	—
Average Weight	—	—

Habitat & Geographic Range

Gulf smoothhound

Habitat

Typically found in marine environments from coastal waters to deep ocean.

Napo Spiny-rat

Habitat

Typically found in diverse terrestrial and aquatic ecosystems.

Range

Distributed across Colombia, Ecuador, and Venezuela.