Hourglass Dolphin vs Spinetail ray

Lagenorhynchus cruciger compared with Bathyraja spinicauda

Key Differences

• Hourglass Dolphin is Least Concern while Spinetail ray is Near Threatened.

Taxonomic Classification

Rank	Hourglass Dolphin	Spinetail 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)	Arhynchobatidae
Genus	Lagenorhynchus	Bathyraja
Species	Lagenorhynchus cruciger	Bathyraja spinicauda

Evolutionary Relationship

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

Conservation Status

Hourglass Dolphin

LC — Least Concern

Spinetail ray

NT — Near Threatened

Physical Characteristics

Attribute	Hourglass Dolphin	Spinetail ray
Diet	—	—
Average Lifespan	—	—
Average Length	—	—
Average Weight	—	—

Habitat & Geographic Range

Hourglass Dolphin

Habitat

Typically found in diverse terrestrial and aquatic ecosystems.

Spinetail ray

Habitat

Native to Europe, inhabiting ecosystems characteristic of the region.

Range

Found in Norway. Listed as Near Threatened, this species requires ongoing monitoring to prevent population decline.