Atlantic Ancula vs Chalk Screw-moss

Ancula gibbosa compared with Tortula vahliana

Key Differences

Atlantic Ancula is Least Concern while Chalk Screw-moss is Vulnerable.

Taxonomic Classification

Rank	Atlantic Ancula	Chalk Screw-moss
Kingdom	Animalia (Animals)	Plantae (Plants)
Phylum	Mollusca (Mollusks)	Bryophyta
Class	Gastropoda (Gastropoda)	Bryopsida (Bryopsida)
Order	Nudibranchia (Nudibranchia)	Pottiales (Pottiales)
Family	Goniodorididae	Pottiaceae
Genus	Ancula	Tortula
Species	Ancula gibbosa	Tortula vahliana

Conservation Status

Atlantic Ancula

LC — Least Concern

Chalk Screw-moss

VU — Vulnerable

Physical Characteristics

Attribute	Atlantic Ancula	Chalk Screw-moss
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.

Chalk Screw-moss

Habitat

Native to Europe, inhabiting ecosystems characteristic of the region.

Range

Distributed across Belgium, Norway, and Portugal. Currently classified as Vulnerable 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.

Chalk Screw-moss

The Chalk Screw-moss (Tortula vahliana) is a species in the genus Tortula. It is currently classified as Vulnerable on the IUCN Red List. Native to Europe, inhabiting ecosystems characteristic of the region.