Hourglass Dolphin vs Round Ray

Lagenorhynchus cruciger compared with Rajella fyllae

Key Differences

• Hourglass Dolphin is Least Concern while Round Ray is Not Evaluated.

Taxonomic Classification

Rank	Hourglass Dolphin	Round Ray
Kingdom same	Animalia (Animals)	Animalia (Animals)
Phylum same	Chordata (Chordates)	Chordata (Chordates)
Class	Mammalia (Mammals)	Elasmobranchii
Order	Cetacea (Whales & Dolphins)	Rajiformes (Rajiformes)
Family	Delphinidae (Oceanic Dolphins)	Rajidae
Genus	Lagenorhynchus	Rajella
Species	Lagenorhynchus cruciger	Rajella fyllae

Evolutionary Relationship

Hourglass Dolphin and Round Ray share a common ancestor at the Phylum level: Chordata. (Chordates)

Conservation Status

Hourglass Dolphin

LC — Least Concern

Round Ray

NE — Not Evaluated

Physical Characteristics

Attribute	Hourglass Dolphin	Round Ray
Diet	—	—
Average Lifespan	—	—
Average Length	—	—
Average Weight	—	—

Habitat & Geographic Range

Hourglass Dolphin

Habitat

Typically found in diverse terrestrial and aquatic ecosystems.

Round Ray

Habitat

Native to Europe, inhabiting ecosystems characteristic of the region.

Range

Distributed across Denmark, Norway, and Sweden.