Pacific Spiny-rat vs Scallop Shell

Proechimys decumanus compared with Rheumaptera undulata

Key Differences

• Pacific Spiny-rat is Near Threatened while Scallop Shell is Least Concern.

Taxonomic Classification

Rank	Pacific Spiny-rat	Scallop Shell
Kingdom same	Animalia (Animals)	Animalia (Animals)
Phylum	Chordata (Chordates)	Arthropoda (Arthropods)
Class	Mammalia (Mammals)	Insecta (Insects)
Order	Rodentia (Rodents)	Lepidoptera (Butterflies & Moths)
Family	Echimyidae	Geometridae
Genus	Proechimys	Rheumaptera
Species	Proechimys decumanus	Rheumaptera undulata

Evolutionary Relationship

Pacific Spiny-rat and Scallop Shell share a common ancestor at the Kingdom level: Animalia. (Animals)

Conservation Status

Pacific Spiny-rat

NT — Near Threatened

Scallop Shell

LC — Least Concern

Physical Characteristics

Attribute	Pacific Spiny-rat	Scallop Shell
Diet	—	—
Average Lifespan	—	—
Average Length	—	—
Average Weight	—	—

Habitat & Geographic Range

Pacific Spiny-rat

Habitat

Typically found in diverse terrestrial and aquatic ecosystems.

Range

Found in Ecuador. Listed as Near Threatened, this species requires ongoing monitoring to prevent population decline.

Scallop Shell

Habitat

Typically found in virtually all terrestrial and freshwater habitats.

Range

Distributed across Canada, Denmark, Norway, and United States.