Foca de Casco vs Olive-gray Thomasomys

Cystophora cristata compared with Thomasomys cinereus

Key Differences

• Foca de Casco is Endangered while Olive-gray Thomasomys is Least Concern.

Taxonomic Classification

Rank	Foca de Casco	Olive-gray Thomasomys
Kingdom same	Animalia (Animals)	Animalia (Animals)
Phylum same	Chordata (cordados)	Chordata (cordados)
Class same	Mammalia (mamíferos)	Mammalia (mamíferos)
Order	Pinnipedia (Seals & Sea Lions)	Rodentia (Rodents)
Family	Phocidae (True Seals)	Cricetidae
Genus	Cystophora	Thomasomys
Species	Cystophora cristata	Thomasomys cinereus

Evolutionary Relationship

Foca de Casco and Olive-gray Thomasomys share a common ancestor at the Class level: Mammalia. (mamíferos)

Conservation Status

Foca de Casco

EN — Endangered

Olive-gray Thomasomys

LC — Least Concern

Physical Characteristics

Attribute	Foca de Casco	Olive-gray Thomasomys
Diet	—	—
Average Lifespan	—	—
Average Length	—	—
Average Weight	—	—

Habitat & Geographic Range

Foca de Casco

Habitat

Typically found in diverse terrestrial and aquatic ecosystems.

Range

Distributed across Denmark, Norway, and Portugal. Currently classified as Endangered on the IUCN Red List, this species faces significant conservation challenges across its range.

Olive-gray Thomasomys

Habitat

Typically found in diverse terrestrial and aquatic ecosystems.

Range

Found in Ecuador.