Brook Floater vs robust pillar snail

Alasmidonta varicosa compared with Cochlicopa nitens

Key Differences

• Brook Floater is Vulnerable while robust pillar snail is Endangered.

Taxonomic Classification

Rank	Brook Floater	robust pillar snail
Kingdom same	Animalia (Animals)	Animalia (Animals)
Phylum same	Mollusca (Mollusks)	Mollusca (Mollusks)
Class	Bivalvia (Bivalvia)	Gastropoda (Gastropoda)
Order	Unionida (Unionida)	Stylommatophora (Stylommatophora)
Family	Unionidae	Cochlicopidae
Genus	Alasmidonta	Cochlicopa
Species	Alasmidonta varicosa	Cochlicopa nitens

Evolutionary Relationship

Brook Floater and robust pillar snail share a common ancestor at the Phylum level: Mollusca. (Mollusks)

Conservation Status

Brook Floater

VU — Vulnerable

robust pillar snail

EN — Endangered

Physical Characteristics

Attribute	Brook Floater	robust pillar snail
Diet	—	—
Average Lifespan	—	—
Average Length	—	—
Average Weight	—	—

Habitat & Geographic Range

Brook Floater

Habitat

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

Range

Found in United States. Currently classified as Vulnerable on the IUCN Red List, this species faces significant conservation challenges across its range.

robust pillar snail

Habitat

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

Range

Distributed across Denmark, France, and Sweden. Currently classified as Endangered on the IUCN Red List, this species faces significant conservation challenges across its range.

Brook Floater

The Brook Floater (Alasmidonta varicosa) is a species in the genus Alasmidonta. It is currently classified as Vulnerable on the IUCN Red List. Native to North America, inhabiting ecosystems characteristic of the region.