Large Fernandina Galapagos Mouse vs Niceforo Maria’s Oldfield Mouse

Nesoryzomys narboroughi compared with Thomasomys nicefori

Key Differences

• Large Fernandina Galapagos Mouse is Vulnerable while Niceforo Maria’s Oldfield Mouse is Least Concern.

Taxonomic Classification

Rank	Large Fernandina Galapagos Mouse	Niceforo Maria’s Oldfield Mouse
Kingdom same	Animalia (Animals)	Animalia (Animals)
Phylum same	Chordata (cordados)	Chordata (cordados)
Class same	Mammalia (mamíferos)	Mammalia (mamíferos)
Order same	Rodentia (Rodents)	Rodentia (Rodents)
Family same	Cricetidae	Cricetidae
Genus	Nesoryzomys	Thomasomys
Species	Nesoryzomys narboroughi	Thomasomys nicefori

Evolutionary Relationship

Large Fernandina Galapagos Mouse and Niceforo Maria’s Oldfield Mouse share a common ancestor at the Family level: Cricetidae.

Conservation Status

Large Fernandina Galapagos Mouse

VU — Vulnerable

Niceforo Maria’s Oldfield Mouse

LC — Least Concern

Physical Characteristics

Attribute	Large Fernandina Galapagos Mouse	Niceforo Maria’s Oldfield Mouse
Diet	—	—
Average Lifespan	—	—
Average Length	—	—
Average Weight	—	—

Habitat & Geographic Range

Large Fernandina Galapagos Mouse

Habitat

Typically found in diverse terrestrial and aquatic ecosystems.

Range

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

Niceforo Maria’s Oldfield Mouse

Habitat

Typically found in diverse terrestrial and aquatic ecosystems.

Range

Found in Colombia.