Napo Spiny-rat vs Spinetail ray

Proechimys quadruplicatus compared with Bathyraja spinicauda

Key Differences

• Napo Spiny-rat is Least Concern while Spinetail ray is Near Threatened.

Taxonomic Classification

Rank	Napo Spiny-rat	Spinetail ray
Kingdom same	Animalia (Animals)	Animalia (Animals)
Phylum same	Chordata (Chordates)	Chordata (Chordates)
Class	Mammalia (Mammals)	Elasmobranchii
Order	Rodentia (Rodents)	Rajiformes (Rajiformes)
Family	Echimyidae	Arhynchobatidae
Genus	Proechimys	Bathyraja
Species	Proechimys quadruplicatus	Bathyraja spinicauda

Evolutionary Relationship

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

Conservation Status

Napo Spiny-rat

LC — Least Concern

Spinetail ray

NT — Near Threatened

Physical Characteristics

Attribute	Napo Spiny-rat	Spinetail ray
Diet	—	—
Average Lifespan	—	—
Average Length	—	—
Average Weight	—	—

Habitat & Geographic Range

Napo Spiny-rat

Habitat

Typically found in diverse terrestrial and aquatic ecosystems.

Range

Distributed across Colombia, Ecuador, and Venezuela.

Spinetail ray

Habitat

Native to Europe, inhabiting ecosystems characteristic of the region.

Range

Found in Norway. Listed as Near Threatened, this species requires ongoing monitoring to prevent population decline.