brittlestar vs chestnut worm

Amphiura chiajei compared with Lumbricus castaneus

Key Differences

• brittlestar is Least Concern while chestnut worm is Not Evaluated.

Taxonomic Classification

Rank	brittlestar	chestnut worm
Kingdom same	Animalia (Animals)	Animalia (Animals)
Phylum	Echinodermata (Echinoderms)	Annelida (Segmented Worms)
Class	Ophiuroidea (Ophiuroidea)	Clitellata (Clitellata)
Order	Amphilepidida (Amphilepidida)	Crassiclitellata (Crassiclitellata)
Family	Amphiuridae	Lumbricidae
Genus	Amphiura	Lumbricus
Species	Amphiura chiajei	Lumbricus castaneus

Evolutionary Relationship

brittlestar and chestnut worm share a common ancestor at the Kingdom level: Animalia. (Animals)

Conservation Status

brittlestar

LC — Least Concern

chestnut worm

NE — Not Evaluated

Physical Characteristics

Attribute	brittlestar	chestnut worm
Diet	—	—
Average Lifespan	—	—
Average Length	—	—
Average Weight	—	—

Habitat & Geographic Range

brittlestar

Habitat

Native to Europe, inhabiting ecosystems characteristic of the region.

Range

Distributed across Denmark, Norway, Portugal, and Sweden.

chestnut worm

Habitat

Native to Europe and North America, inhabiting ecosystems characteristic of the region.

Range

Distributed across Belgium, Denmark, Norway, Sweden, and United States.

brittlestar

The Brittlestar (Amphiura chiajei) is a species in the genus Amphiura. It is currently classified as Least Concern on the IUCN Red List. Native to Europe, inhabiting ecosystems characteristic of the region.

chestnut worm

The chestnut worm (Lumbricus castaneus) is a species in the genus Lumbricus. Native to Europe and North America, inhabiting ecosystems characteristic of the region.

Shared Countries

Both species can be found in 3 countries:

🇩🇰 Denmark 🇳🇴 Norway 🇸🇪 Sweden