nut fingernailclam vs Polynesian rat

Sphaerium rivicola compared with Rattus exulans

Key Differences

• nut fingernailclam is Not Evaluated while Polynesian rat is Least Concern.

Taxonomic Classification

Rank	nut fingernailclam	Polynesian rat
Kingdom same	Animalia (Animals)	Animalia (Animals)
Phylum	Mollusca (Mollusks)	Chordata (Chordates)
Class	Bivalvia (Bivalvia)	Mammalia (Mammals)
Order	Sphaeriida (Sphaeriida)	Rodentia (Rodents)
Family	Sphaeriidae	Muridae (Mice & Rats)
Genus	Sphaerium	Rattus
Species	Sphaerium rivicola	Rattus exulans

Evolutionary Relationship

nut fingernailclam and Polynesian rat share a common ancestor at the Kingdom level: Animalia. (Animals)

Conservation Status

nut fingernailclam

NE — Not Evaluated

Polynesian rat

LC — Least Concern

Physical Characteristics

Attribute	nut fingernailclam	Polynesian rat
Diet	—	—
Average Lifespan	—	—
Average Length	—	—
Average Weight	—	—

Habitat & Geographic Range

nut fingernailclam

Habitat

Native to Europe, inhabiting ecosystems characteristic of the region.

Range

Distributed across Belgium, Denmark, Norway, and Ukraine.

Polynesian rat

Habitat

Found across multiple habitat types including tropical and subtropical moist broadleaf forests, tropical and subtropical dry broadleaf forests, and tropical and subtropical coniferous forests, among 4 distinct biome types spanning the Australasia and Indomalayan realms. Populations are also found in montane and highland environments at higher elevations.

Range

Widely distributed across Asia (6 countries), Europe (United Kingdom), North America (United States), Oceania and the Pacific (11 countries), and South America (Chile).