Atlantic Ancula vs Chalky Macoma

Ancula gibbosa compared with Macoma calcarea

Taxonomic Classification

Rank	Atlantic Ancula	Chalky Macoma
Kingdom same	Animalia (Animals)	Animalia (Animals)
Phylum same	Mollusca (Mollusks)	Mollusca (Mollusks)
Class	Gastropoda (Gastropoda)	Bivalvia (Bivalvia)
Order	Nudibranchia (Nudibranchia)	Cardiida (Cardiida)
Family	Goniodorididae	Tellinidae
Genus	Ancula	Macoma
Species	Ancula gibbosa	Macoma calcarea

Evolutionary Relationship

Atlantic Ancula and Chalky Macoma share a common ancestor at the Phylum level: Mollusca. (Mollusks)

Conservation Status

Atlantic Ancula

LC — Least Concern

Chalky Macoma

LC — Least Concern

Physical Characteristics

Attribute	Atlantic Ancula	Chalky Macoma
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.

Chalky Macoma

Habitat

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

Range

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

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.

Chalky Macoma

The Chalky Macoma (Macoma calcarea) is a species in the genus Macoma. It is currently classified as Least Concern on the IUCN Red List. 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