Merriam’s Pocket Mouse vs Ray

Perognathus merriami compared with Atlantoraja castelnaui

Key Differences

• Merriam’s Pocket Mouse is Least Concern while Ray is Critically Endangered.

Taxonomic Classification

Rank	Merriam’s Pocket Mouse	Ray
Kingdom same	Animalia (Animals)	Animalia (Animals)
Phylum same	Chordata (Chordates)	Chordata (Chordates)
Class	Mammalia (Mammals)	Elasmobranchii
Order	Rodentia (Rodents)	Rajiformes (Rajiformes)
Family	Heteromyidae	Arhynchobatidae
Genus	Perognathus	Atlantoraja
Species	Perognathus merriami	Atlantoraja castelnaui

Evolutionary Relationship

Merriam’s Pocket Mouse and Ray share a common ancestor at the Phylum level: Chordata. (Chordates)

Conservation Status

Merriam’s Pocket Mouse

LC — Least Concern

Ray

CR — Critically Endangered

Physical Characteristics

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

Habitat & Geographic Range

Merriam’s Pocket Mouse

Habitat

Typically found in diverse terrestrial and aquatic ecosystems.

Ray