Crested shark vs Dusky Dolphin

Galeus arae compared with Lagenorhynchus obscurus

Taxonomic Classification

Rank	Crested shark	Dusky Dolphin
Kingdom same	Animalia (动物界)	Animalia (动物界)
Phylum same	Chordata (脊索动物门)	Chordata (脊索动物门)
Class	Chondrichthyes (软骨鱼纲)	Mammalia (哺乳動物)
Order	Carcharhiniformes (真鲨目)	Cetacea (Whales & Dolphins)
Family	Scyliorhinidae	Delphinidae (Oceanic Dolphins)
Genus	Galeus	Lagenorhynchus
Species	Galeus arae	Lagenorhynchus obscurus

Evolutionary Relationship

Crested shark and Dusky Dolphin share a common ancestor at the Phylum level: Chordata. (脊索动物门)

Conservation Status

Crested shark

LC — Least Concern

Dusky Dolphin

LC — Least Concern

Physical Characteristics

Attribute	Crested shark	Dusky Dolphin
Diet	—	—
Average Lifespan	—	—
Average Length	—	—
Average Weight	—	—

Habitat & Geographic Range

Crested shark

Habitat

Typically found in marine environments from coastal waters to deep ocean.

Dusky Dolphin

Habitat

Typically found in diverse terrestrial and aquatic ecosystems.