Black-Lined Periwinkle vs Hudson s Thomaomys

Littorina saxatilis compared with Thomasomys hudsoni

Key Differences

• Black-Lined Periwinkle is Least Concern while Hudson s Thomaomys is Vulnerable.

Taxonomic Classification

Rank	Black-Lined Periwinkle	Hudson s Thomaomys
Kingdom same	Animalia (Animals)	Animalia (Animals)
Phylum	Mollusca (Mollusks)	Chordata (Chordates)
Class	Gastropoda (Gastropoda)	Mammalia (Mammals)
Order	Littorinimorpha (Littorinimorpha)	Rodentia (Rodents)
Family	Littorinidae	Cricetidae
Genus	Littorina	Thomasomys
Species	Littorina saxatilis	Thomasomys hudsoni

Evolutionary Relationship

Black-Lined Periwinkle and Hudson s Thomaomys share a common ancestor at the Kingdom level: Animalia. (Animals)

Conservation Status

Black-Lined Periwinkle

LC — Least Concern

Hudson s Thomaomys

VU — Vulnerable

Physical Characteristics

Attribute	Black-Lined Periwinkle	Hudson s Thomaomys
Diet	—	—
Average Lifespan	—	—
Average Length	—	—
Average Weight	—	—

Habitat & Geographic Range

Black-Lined Periwinkle

Habitat

Found across multiple habitat types including tropical and subtropical grasslands and savannas, flooded grasslands and savannas, and deserts and xeric shrublands within the Afrotropic biogeographic realm.

Range

Widely distributed across Africa (Namibia, South Africa), Europe (5 countries), and North America (United States).

Hudson s Thomaomys

Habitat

Typically found in diverse terrestrial and aquatic ecosystems.

Range

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

Black-Lined Periwinkle

The Black-Lined Periwinkle (Littorina saxatilis) is a species in the genus Littorina. It is currently classified as Least Concern on the IUCN Red List. Found across multiple habitat types including tropical and subtropical grasslands and savannas, flooded grasslands and savannas, and deserts and xeric shrublands within the Afrotropic biogeographic realm.