Mountain Stream Siredon vs Niceforo Maria’s Oldfield Mouse

Ambystoma altamirani compared with Thomasomys nicefori

Key Differences

• Mountain Stream Siredon is Endangered while Niceforo Maria’s Oldfield Mouse is Least Concern.

Taxonomic Classification

Rank	Mountain Stream Siredon	Niceforo Maria’s Oldfield Mouse
Kingdom same	Animalia (Animals)	Animalia (Animals)
Phylum same	Chordata (Chordates)	Chordata (Chordates)
Class	Amphibia (Amphibians)	Mammalia (Mammals)
Order	Caudata (Caudata)	Rodentia (Rodents)
Family	Ambystomatidae	Cricetidae
Genus	Ambystoma	Thomasomys
Species	Ambystoma altamirani	Thomasomys nicefori

Evolutionary Relationship

Mountain Stream Siredon and Niceforo Maria’s Oldfield Mouse share a common ancestor at the Phylum level: Chordata. (Chordates)

Conservation Status

Mountain Stream Siredon

EN — Endangered

Niceforo Maria’s Oldfield Mouse

LC — Least Concern

Physical Characteristics

Attribute	Mountain Stream Siredon	Niceforo Maria’s Oldfield Mouse
Diet	—	—
Average Lifespan	—	—
Average Length	—	—
Average Weight	—	—

Habitat & Geographic Range

Mountain Stream Siredon

Habitat

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

Range

Found in Mexico. Currently classified as Endangered 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.