Pygmy three-toed sloth vs St. James' shell

Bradypus pygmaeus compared with Pecten maximus

Key Differences

• Pygmy three-toed sloth is Critically Endangered while St. James' shell is Least Concern.

Taxonomic Classification

Rank	Pygmy three-toed sloth	St. James' shell
Kingdom same	Animalia (Animals)	Animalia (Animals)
Phylum	Chordata (Chordates)	Mollusca (Mollusks)
Class	Mammalia (Mammals)	Bivalvia (Bivalvia)
Order	Pilosa (Sloths & Anteaters)	Pectinida (Pectinida)
Family	Bradypodidae (Three-toed Sloths)	Pectinidae
Genus	Bradypus (Three-toed Sloths)	Pecten
Species	Bradypus pygmaeus	Pecten maximus

Evolutionary Relationship

Pygmy three-toed sloth and St. James' shell share a common ancestor at the Kingdom level: Animalia. (Animals)

Conservation Status

Pygmy three-toed sloth

CR — Critically Endangered

St. James' shell

LC — Least Concern

Physical Characteristics

Attribute	Pygmy three-toed sloth	St. James' shell
Diet	—	—
Average Lifespan	—	—
Average Length	—	—
Average Weight	—	—

Habitat & Geographic Range

Pygmy three-toed sloth

Habitat

Typically found in diverse terrestrial and aquatic ecosystems.

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).

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.