Niceforo Maria’s Oldfield Mouse vs Smith's Thorius

Thomasomys nicefori compared with Thorius smithi

Key Differences

• Niceforo Maria’s Oldfield Mouse is Least Concern while Smith's Thorius is Critically Endangered.

Taxonomic Classification

Rank	Niceforo Maria’s Oldfield Mouse	Smith's Thorius
Kingdom same	Animalia (Animals)	Animalia (Animals)
Phylum same	Chordata (Chordates)	Chordata (Chordates)
Class	Mammalia (Mammals)	Amphibia (Amphibians)
Order	Rodentia (Rodents)	Caudata (Caudata)
Family	Cricetidae	Plethodontidae
Genus	Thomasomys	Thorius
Species	Thomasomys nicefori	Thorius smithi

Evolutionary Relationship

Niceforo Maria’s Oldfield Mouse and Smith's Thorius share a common ancestor at the Phylum level: Chordata. (Chordates)

Conservation Status

Niceforo Maria’s Oldfield Mouse

LC — Least Concern

Smith's Thorius

CR — Critically Endangered

Physical Characteristics

Attribute	Niceforo Maria’s Oldfield Mouse	Smith's Thorius
Diet	—	—
Average Lifespan	—	—
Average Length	—	—
Average Weight	—	—

Habitat & Geographic Range

Niceforo Maria’s Oldfield Mouse

Habitat

Typically found in diverse terrestrial and aquatic ecosystems.

Range

Found in Colombia.

Smith's Thorius

Habitat

Typically found in freshwater habitats, moist forests, and wetlands.

Range

Found in Mexico. Currently classified as Critically Endangered on the IUCN Red List, this species faces significant conservation challenges across its range.