Olive-gray Thomasomys vs undulate ray

Thomasomys cinereus compared with Raja undulata

Key Differences

• Olive-gray Thomasomys is Least Concern while undulate ray is Endangered.

Taxonomic Classification

Rank	Olive-gray Thomasomys	undulate ray
Kingdom same	Animalia (Animals)	Animalia (Animals)
Phylum same	Chordata (Chordates)	Chordata (Chordates)
Class	Mammalia (Mammals)	Elasmobranchii
Order	Rodentia (Rodents)	Rajiformes (Rajiformes)
Family	Cricetidae	Rajidae
Genus	Thomasomys	Raja
Species	Thomasomys cinereus	Raja undulata

Evolutionary Relationship

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

Conservation Status

Olive-gray Thomasomys

LC — Least Concern

undulate ray

EN — Endangered

Physical Characteristics

Attribute	Olive-gray Thomasomys	undulate 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.

undulate ray

Habitat

Native to Europe, inhabiting ecosystems characteristic of the region.

Range

Found in Belgium. Currently classified as Endangered on the IUCN Red List, this species faces significant conservation challenges across its range.