Olive-gray Thomasomys vs Ray's Knotgrass

Thomasomys cinereus compared with Polygonum oxyspermum

Key Differences

• Olive-gray Thomasomys is Least Concern while Ray's Knotgrass is Endangered.

Taxonomic Classification

Rank	Olive-gray Thomasomys	Ray's Knotgrass
Kingdom	Animalia (Animals)	Plantae (Plants)
Phylum	Chordata (Chordates)	Magnoliophyta (Flowering Plants)
Class	Mammalia (Mammals)	Magnoliopsida (Dicots)
Order	Rodentia (Rodents)	Caryophyllales (Caryophyllales)
Family	Cricetidae	Polygonaceae
Genus	Thomasomys	Polygonum
Species	Thomasomys cinereus	Polygonum oxyspermum

Conservation Status

Olive-gray Thomasomys

LC — Least Concern

Ray's Knotgrass

EN — Endangered

Physical Characteristics

Attribute	Olive-gray Thomasomys	Ray's Knotgrass
Diet	—	—
Average Lifespan	—	—
Average Length	—	—
Average Weight	—	—

Habitat & Geographic Range

Olive-gray Thomasomys

Habitat

Typically found in diverse terrestrial and aquatic ecosystems.

Range

Found in Ecuador.

Ray's Knotgrass

Habitat

Typically found in diverse terrestrial habitats from tropical forests to temperate regions.

Range

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