brittlestar vs limestone fern

Amphiura filiformis compared with Gymnocarpium robertianum

Key Differences

brittlestar is Least Concern while limestone fern is Critically Endangered.

Taxonomic Classification

Rank	brittlestar	limestone fern
Kingdom	Animalia (Animals)	Plantae (Plants)
Phylum	Echinodermata (Echinoderms)	Tracheophyta
Class	Ophiuroidea (Ophiuroidea)	Polypodiopsida (Polypodiopsida)
Order	Amphilepidida (Amphilepidida)	Polypodiales (Polypodiales)
Family	Amphiuridae	Cystopteridaceae
Genus	Amphiura	Gymnocarpium
Species	Amphiura filiformis	Gymnocarpium robertianum

Conservation Status

brittlestar

LC — Least Concern

limestone fern

CR — Critically Endangered

Physical Characteristics

Attribute	brittlestar	limestone fern
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.

limestone fern

Habitat

Typically found in moist, shaded forest floors and tropical canopies.

Range

Distributed across Belgium, Canada, Norway, and Sweden. Currently classified as Critically Endangered on the IUCN Red List, this species faces significant conservation challenges across its range.

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.