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 (动物界)	Animalia (动物界)
Phylum same	Mollusca (软体动物门)	Mollusca (软体动物门)
Class same	Bivalvia (双壳纲)	Bivalvia (双壳纲)
Order same	Sphaeriida (泥蜆目)	Sphaeriida (泥蜆目)
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