Irrawaddy dolphin vs Olive-gray Thomasomys

Orcaella brevirostris compared with Thomasomys cinereus

Key Differences

• Irrawaddy dolphin is Endangered while Olive-gray Thomasomys is Least Concern.

Taxonomic Classification

Rank	Irrawaddy dolphin	Olive-gray Thomasomys
Kingdom same	Animalia (Animals)	Animalia (Animals)
Phylum same	Chordata (Chordates)	Chordata (Chordates)
Class same	Mammalia (Mammals)	Mammalia (Mammals)
Order	Cetacea (Whales & Dolphins)	Rodentia (Rodents)
Family	Delphinidae (Oceanic Dolphins)	Cricetidae
Genus	Orcaella	Thomasomys
Species	Orcaella brevirostris	Thomasomys cinereus

Evolutionary Relationship

Irrawaddy dolphin and Olive-gray Thomasomys share a common ancestor at the Class level: Mammalia. (Mammals)

Conservation Status

Irrawaddy dolphin

EN — Endangered

Olive-gray Thomasomys

LC — Least Concern

Physical Characteristics

Attribute	Irrawaddy dolphin	Olive-gray Thomasomys
Diet	—	—
Average Lifespan	—	—
Average Length	—	—
Average Weight	—	—

Habitat & Geographic Range

Irrawaddy dolphin

Habitat

Typically found in diverse terrestrial and aquatic ecosystems.

Olive-gray Thomasomys

Habitat

Typically found in diverse terrestrial and aquatic ecosystems.

Range

Found in Ecuador.