brittlestar vs Polynesian Tree Snail

Amphiura filiformis compared with Partula dolorosa

Key Differences

• brittlestar is Least Concern while Polynesian Tree Snail is Extinct.

Taxonomic Classification

Rank	brittlestar	Polynesian Tree Snail
Kingdom same	Animalia (Animals)	Animalia (Animals)
Phylum	Echinodermata (Echinoderms)	Mollusca (Mollusks)
Class	Ophiuroidea (Ophiuroidea)	Gastropoda (Gastropoda)
Order	Amphilepidida (Amphilepidida)	Stylommatophora (Stylommatophora)
Family	Amphiuridae	Partulidae
Genus	Amphiura	Partula
Species	Amphiura filiformis	Partula dolorosa

Evolutionary Relationship

brittlestar and Polynesian Tree Snail share a common ancestor at the Kingdom level: Animalia. (Animals)

Conservation Status

brittlestar

LC — Least Concern

Polynesian Tree Snail

EX — Extinct

Physical Characteristics

Attribute	brittlestar	Polynesian Tree Snail
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, and Sweden.

Polynesian Tree Snail

Habitat

Typically found in terrestrial and aquatic habitats including forests and freshwater.

brittlestar

The Brittlestar (Amphiura filiformis) 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.