Atlantic Ancula vs limestone fern

Ancula gibbosa compared with Gymnocarpium robertianum

Key Differences

• Atlantic Ancula is Least Concern while limestone fern is Critically Endangered.

Taxonomic Classification

Rank	Atlantic Ancula	limestone fern
Kingdom	Animalia (Animals)	Plantae (Plants)
Phylum	Mollusca (Mollusks)	Tracheophyta
Class	Gastropoda (Gastropoda)	Polypodiopsida (Polypodiopsida)
Order	Nudibranchia (Nudibranchia)	Polypodiales (Polypodiales)
Family	Goniodorididae	Cystopteridaceae
Genus	Ancula	Gymnocarpium
Species	Ancula gibbosa	Gymnocarpium robertianum

Conservation Status

Atlantic Ancula

LC — Least Concern

limestone fern

CR — Critically Endangered

Physical Characteristics

Attribute	Atlantic Ancula	limestone fern
Diet	—	—
Average Lifespan	—	—
Average Length	—	—
Average Weight	—	—

Habitat & Geographic Range

Atlantic Ancula

Habitat

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

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.

Atlantic Ancula

The Atlantic Ancula (Ancula gibbosa) is a species in the genus Ancula. It is currently classified as Least Concern on the IUCN Red List. Typically found in terrestrial and aquatic habitats including forests and freshwater.

Shared Countries

Both species can be found in 2 countries:

🇳🇴 Norway 🇸🇪 Sweden