Dusky Dolphin vs Spinetail ray

Lagenorhynchus obscurus compared with Bathyraja spinicauda

Key Differences

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

Taxonomic Classification

Rank	Dusky Dolphin	Spinetail ray
Kingdom same	Animalia (動物)	Animalia (動物)
Phylum same	Chordata (脊索動物)	Chordata (脊索動物)
Class	Mammalia (哺乳類)	Elasmobranchii
Order	Cetacea (Whales & Dolphins)	Rajiformes (ガンギエイ目)
Family	Delphinidae (Oceanic Dolphins)	Arhynchobatidae
Genus	Lagenorhynchus	Bathyraja
Species	Lagenorhynchus obscurus	Bathyraja spinicauda

Evolutionary Relationship

Dusky Dolphin and Spinetail ray share a common ancestor at the Phylum level: Chordata. (脊索動物)

Conservation Status

Dusky Dolphin

LC — Least Concern

Spinetail ray

NT — Near Threatened

Physical Characteristics

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

Habitat & Geographic Range

Dusky 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.