Common Periwinkle vs Hammond's Oryzomys

Littorina littorea compared with Mindomys hammondi

Key Differences

• Common Periwinkle is Least Concern while Hammond's Oryzomys is Endangered.

Taxonomic Classification

Rank	Common Periwinkle	Hammond's Oryzomys
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	Mindomys
Species	Littorina littorea	Mindomys hammondi

Evolutionary Relationship

Common Periwinkle and Hammond's Oryzomys share a common ancestor at the Kingdom level: Animalia. (Animals)

Conservation Status

Common Periwinkle

LC — Least Concern

Hammond's Oryzomys

EN — Endangered

Physical Characteristics

Attribute	Common Periwinkle	Hammond's Oryzomys
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).

Hammond's Oryzomys

Habitat

Typically found in diverse terrestrial and aquatic ecosystems.

Range

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

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.