Common Periwinkle vs Linnaeus's mouse opossum

Littorina littorea compared with Marmosa murina

Taxonomic Classification

Rank	Common Periwinkle	Linnaeus's mouse opossum
Kingdom same	Animalia (Animals)	Animalia (Animals)
Phylum	Mollusca (Mollusks)	Chordata (Chordates)
Class	Gastropoda (Gastropoda)	Mammalia (Mammals)
Order	Littorinimorpha (Littorinimorpha)	Didelphimorphia (Didelphimorphia)
Family	Littorinidae	Didelphidae
Genus	Littorina	Marmosa
Species	Littorina littorea	Marmosa murina

Evolutionary Relationship

Common Periwinkle and Linnaeus's mouse opossum share a common ancestor at the Kingdom level: Animalia. (Animals)

Conservation Status

Common Periwinkle

LC — Least Concern

Linnaeus's mouse opossum

LC — Least Concern

Physical Characteristics

Attribute	Common Periwinkle	Linnaeus's mouse opossum
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).

Linnaeus's mouse opossum

Habitat

Typically found in diverse terrestrial and aquatic ecosystems.

Range

Distributed across Colombia and Venezuela.

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.