Arrow-head tree snail vs Brook Floater

Partula sagitta compared with Alasmidonta varicosa

Key Differences

• Arrow-head tree snail is Extinct while Brook Floater is Vulnerable.

Taxonomic Classification

Rank	Arrow-head tree snail	Brook Floater
Kingdom same	Animalia (Animals)	Animalia (Animals)
Phylum same	Mollusca (Mollusks)	Mollusca (Mollusks)
Class	Gastropoda (Gastropoda)	Bivalvia (Bivalvia)
Order	Stylommatophora (Stylommatophora)	Unionida (Unionida)
Family	Partulidae	Unionidae
Genus	Partula	Alasmidonta
Species	Partula sagitta	Alasmidonta varicosa

Evolutionary Relationship

Arrow-head tree snail and Brook Floater share a common ancestor at the Phylum level: Mollusca. (Mollusks)

Conservation Status

Arrow-head tree snail

EX — Extinct

Brook Floater

VU — Vulnerable

Physical Characteristics

Attribute	Arrow-head tree snail	Brook Floater
Diet	—	—
Average Lifespan	—	—
Average Length	—	—
Average Weight	—	—

Habitat & Geographic Range

Arrow-head tree snail

Habitat

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

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.

Arrow-head tree snail

The Arrow-head tree snail, Partula sagitta, is a species. It is currently assessed as extinct on the IUCN Red List. Typically found in terrestrial and aquatic habitats including forests and freshwater.

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.