Merriam’s Pocket Mouse vs Rusty Crayfish

Perognathus merriami compared with Faxonius rusticus

Key Differences

• Merriam’s Pocket Mouse is Least Concern while Rusty Crayfish is Not Evaluated.

Taxonomic Classification

Rank	Merriam’s Pocket Mouse	Rusty Crayfish
Kingdom same	Animalia (Animals)	Animalia (Animals)
Phylum	Chordata (Chordates)	Arthropoda (Arthropods)
Class	Mammalia (Mammals)	Malacostraca (Crustaceans)
Order	Rodentia (Rodents)	Decapoda (Decapoda)
Family	Heteromyidae	Cambaridae
Genus	Perognathus	Faxonius
Species	Perognathus merriami	Faxonius rusticus

Evolutionary Relationship

Merriam’s Pocket Mouse and Rusty Crayfish share a common ancestor at the Kingdom level: Animalia. (Animals)

Conservation Status

Merriam’s Pocket Mouse

LC — Least Concern

Rusty Crayfish

NE — Not Evaluated

Physical Characteristics

Attribute	Merriam’s Pocket Mouse	Rusty Crayfish
Diet	—	—
Average Lifespan	—	—
Average Length	—	—
Average Weight	—	—

Habitat & Geographic Range

Merriam’s Pocket Mouse

Habitat

Typically found in diverse terrestrial and aquatic ecosystems.

Rusty Crayfish

Habitat

Typically found in marine, freshwater, and terrestrial environments.

Range

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