Heavy-browed Mouse Opossum vs St. James' shell

Marmosa andersoni compared with Pecten maximus

Key Differences

• Heavy-browed Mouse Opossum is Data Deficient while St. James' shell is Least Concern.

Taxonomic Classification

Rank	Heavy-browed Mouse Opossum	St. James' shell
Kingdom same	Animalia (Animals)	Animalia (Animals)
Phylum	Chordata (Chordates)	Mollusca (Mollusks)
Class	Mammalia (Mammals)	Bivalvia (Bivalvia)
Order	Didelphimorphia (Didelphimorphia)	Pectinida (Pectinida)
Family	Didelphidae	Pectinidae
Genus	Marmosa	Pecten
Species	Marmosa andersoni	Pecten maximus

Evolutionary Relationship

Heavy-browed Mouse Opossum and St. James' shell share a common ancestor at the Kingdom level: Animalia. (Animals)

Conservation Status

Heavy-browed Mouse Opossum

DD — Data Deficient

St. James' shell

LC — Least Concern

Physical Characteristics

Attribute	Heavy-browed Mouse Opossum	St. James' shell
Diet	—	—
Average Lifespan	—	—
Average Length	—	—
Average Weight	—	—

Habitat & Geographic Range

Heavy-browed Mouse Opossum

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.