Olive-gray Thomasomys vs Spinetail ray

Thomasomys cinereus compared with Bathyraja spinicauda

Key Differences

• Olive-gray Thomasomys is Least Concern while Spinetail ray is Near Threatened.

Taxonomic Classification

Rank	Olive-gray Thomasomys	Spinetail ray
Kingdom same	Animalia (Animals)	Animalia (Animals)
Phylum same	Chordata (Chordates)	Chordata (Chordates)
Class	Mammalia (Mammals)	Elasmobranchii
Order	Rodentia (Rodents)	Rajiformes (Rajiformes)
Family	Cricetidae	Arhynchobatidae
Genus	Thomasomys	Bathyraja
Species	Thomasomys cinereus	Bathyraja spinicauda

Evolutionary Relationship

Olive-gray Thomasomys and Spinetail ray share a common ancestor at the Phylum level: Chordata. (Chordates)

Conservation Status

Olive-gray Thomasomys

LC — Least Concern

Spinetail ray

NT — Near Threatened

Physical Characteristics

Attribute	Olive-gray Thomasomys	Spinetail ray
Diet	—	—
Average Lifespan	—	—
Average Length	—	—
Average Weight	—	—

Habitat & Geographic Range

Olive-gray Thomasomys

Habitat

Typically found in diverse terrestrial and aquatic ecosystems.

Range

Found in Ecuador.

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.