blunt tellin vs St. James' shell

Arcopagia crassa compared with Pecten maximus

Key Differences

• blunt tellin is Vulnerable while St. James' shell is Least Concern.

Taxonomic Classification

Rank	blunt tellin	St. James' shell
Kingdom same	Animalia (Animals)	Animalia (Animals)
Phylum same	Mollusca (Mollusks)	Mollusca (Mollusks)
Class same	Bivalvia (Bivalvia)	Bivalvia (Bivalvia)
Order	Cardiida (Cardiida)	Pectinida (Pectinida)
Family	Tellinidae	Pectinidae
Genus	Arcopagia	Pecten
Species	Arcopagia crassa	Pecten maximus

Evolutionary Relationship

blunt tellin and St. James' shell share a common ancestor at the Class level: Bivalvia. (Bivalvia)

Conservation Status

blunt tellin

VU — Vulnerable

St. James' shell

LC — Least Concern

Physical Characteristics

Attribute	blunt tellin	St. James' shell
Diet	—	—
Average Lifespan	—	—
Average Length	—	—
Average Weight	—	—

Habitat & Geographic Range

blunt tellin

Habitat

Native to Europe, inhabiting ecosystems characteristic of the region.

Range

Distributed across Belgium, Denmark, Norway, and Sweden. Currently classified as Vulnerable on the IUCN Red List, this species faces significant conservation challenges across its range.

St. James' shell

Habitat

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

Range

Widely distributed across Asia (China), Europe (8 countries), and South America (Chile).

blunt tellin

The Blunt tellin (Arcopagia crassa) is a species in the genus Arcopagia. It is currently classified as Vulnerable on the IUCN Red List. Native to Europe, inhabiting ecosystems characteristic of the region.

St. James' shell

St. James' shell (Pecten maximus) 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.

Shared Countries

Both species can be found in 4 countries:

🇧🇪 Belgium 🇩🇰 Denmark 🇳🇴 Norway 🇸🇪 Sweden