Common Periwinkle vs Gray-bellied Pencil-tailed Tree Mouse

Littorina littorea compared with Chiropodomys muroides

Key Differences

• Common Periwinkle is Least Concern while Gray-bellied Pencil-tailed Tree Mouse is Data Deficient.

Taxonomic Classification

Rank	Common Periwinkle	Gray-bellied Pencil-tailed Tree Mouse
Kingdom same	Animalia (Animals)	Animalia (Animals)
Phylum	Mollusca (Mollusks)	Chordata (Chordates)
Class	Gastropoda (Gastropoda)	Mammalia (Mammals)
Order	Littorinimorpha (Littorinimorpha)	Rodentia (Rodents)
Family	Littorinidae	Muridae (Mice & Rats)
Genus	Littorina	Chiropodomys
Species	Littorina littorea	Chiropodomys muroides

Evolutionary Relationship

Common Periwinkle and Gray-bellied Pencil-tailed Tree Mouse share a common ancestor at the Kingdom level: Animalia. (Animals)

Conservation Status

Common Periwinkle

LC — Least Concern

Gray-bellied Pencil-tailed Tree Mouse

DD — Data Deficient

Physical Characteristics

Attribute	Common Periwinkle	Gray-bellied Pencil-tailed Tree Mouse
Diet	—	—
Average Lifespan	—	—
Average Length	—	—
Average Weight	—	—

Habitat & Geographic Range

Common Periwinkle

Habitat

Typically found in terrestrial and aquatic habitats including forests and freshwater.

Range

Found across Europe (4 countries) and North America (Canada, United States).

Gray-bellied Pencil-tailed Tree Mouse

Habitat

Typically found in diverse terrestrial and aquatic ecosystems.

Common Periwinkle

Common Periwinkle (Littorina littorea) is classified as Least Concern (LC) on the IUCN Red List. Widespread and abundant across its range, with stable populations and no immediate conservation concerns.