Common Periwinkle vs Long-tailed Ground Squirrel

Littorina littorea compared with Urocitellus undulatus

Taxonomic Classification

Rank	Common Periwinkle	Long-tailed Ground Squirrel
Kingdom same	Animalia (Animals)	Animalia (Animals)
Phylum	Mollusca (Mollusks)	Chordata (Chordates)
Class	Gastropoda (Gastropoda)	Mammalia (Mammals)
Order	Littorinimorpha (Littorinimorpha)	Rodentia (Rodents)
Family	Littorinidae	Sciuridae (Squirrels)
Genus	Littorina	Urocitellus
Species	Littorina littorea	Urocitellus undulatus

Evolutionary Relationship

Common Periwinkle and Long-tailed Ground Squirrel share a common ancestor at the Kingdom level: Animalia. (Animals)

Conservation Status

Common Periwinkle

LC — Least Concern

Long-tailed Ground Squirrel

LC — Least Concern

Physical Characteristics

Attribute	Common Periwinkle	Long-tailed Ground Squirrel
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).

Long-tailed Ground Squirrel

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.