European Fingernail Clam vs Swamp Orb Mussel

Sphaerium corneum compared with Sphaerium nucleus

Taxonomic Classification

Rank	European Fingernail Clam	Swamp Orb Mussel
Kingdom same	Animalia (動物)	Animalia (動物)
Phylum same	Mollusca (軟体動物)	Mollusca (軟体動物)
Class same	Bivalvia (二枚貝)	Bivalvia (二枚貝)
Order same	Sphaeriida (Sphaeriida)	Sphaeriida (Sphaeriida)
Family same	Sphaeriidae	Sphaeriidae
Genus same	Sphaerium	Sphaerium
Species	Sphaerium corneum	Sphaerium nucleus

Evolutionary Relationship

European Fingernail Clam and Swamp Orb Mussel share a common ancestor at the Genus level: Sphaerium.

Conservation Status

European Fingernail Clam

LC — Least Concern

Swamp Orb Mussel

LC — Least Concern

Physical Characteristics

Attribute	European Fingernail Clam	Swamp Orb Mussel
Diet	—	—
Average Lifespan	—	—
Average Length	—	—
Average Weight	—	—

Habitat & Geographic Range

European Fingernail Clam

Habitat

Native to Europe and North America, inhabiting ecosystems characteristic of the region.

Range

Found across Europe (5 countries) and North America (United States).

Swamp Orb Mussel

Habitat

Native to Europe, inhabiting ecosystems characteristic of the region.

Range

Distributed across Denmark, Norway, Sweden, and Ukraine.

Shared Countries

Both species can be found in 4 countries:

🇩🇰 Denmark 🇳🇴 Norway 🇸🇪 Sweden 🇺🇦 Ukraine