Gray-bellied Rice Rat vs St. James' shell

Nephelomys moerex compared with Pecten maximus

Key Differences

• Gray-bellied Rice Rat is Extinct while St. James' shell is Least Concern.

Taxonomic Classification

Rank	Gray-bellied Rice Rat	St. James' shell
Kingdom same	Animalia (Animals)	Animalia (Animals)
Phylum	Chordata (Chordates)	Mollusca (Mollusks)
Class	Mammalia (Mammals)	Bivalvia (Bivalvia)
Order	Rodentia (Rodents)	Pectinida (Pectinida)
Family	Cricetidae	Pectinidae
Genus	Nephelomys	Pecten
Species	Nephelomys moerex	Pecten maximus

Evolutionary Relationship

Gray-bellied Rice Rat and St. James' shell share a common ancestor at the Kingdom level: Animalia. (Animals)

Conservation Status

Gray-bellied Rice Rat

EX — Extinct

St. James' shell

LC — Least Concern

Physical Characteristics

Attribute	Gray-bellied Rice Rat	St. James' shell
Diet	—	—
Average Lifespan	—	—
Average Length	—	—
Average Weight	—	—

Habitat & Geographic Range

Gray-bellied Rice Rat

Habitat

Typically found in diverse terrestrial and aquatic ecosystems.

Range

Found in Ecuador.

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.