Arrow-head tree snail vs Brook Alder

Partula sagitta compared with Alnus maritima

Key Differences

• Arrow-head tree snail is Extinct while Brook Alder is Endangered.

Taxonomic Classification

Rank	Arrow-head tree snail	Brook Alder
Kingdom	Animalia (Animals)	Plantae (Plants)
Phylum	Mollusca (Mollusks)	Magnoliophyta (Flowering Plants)
Class	Gastropoda (Gastropoda)	Magnoliopsida (Dicots)
Order	Stylommatophora (Stylommatophora)	Fagales (Beeches & Oaks)
Family	Partulidae	Betulaceae
Genus	Partula	Alnus
Species	Partula sagitta	Alnus maritima

Conservation Status

Arrow-head tree snail

EX — Extinct

Brook Alder

EN — Endangered

Physical Characteristics

Attribute	Arrow-head tree snail	Brook Alder
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 Alder

Habitat

Typically found in diverse terrestrial habitats from tropical forests to temperate regions.

Range

Distributed across Belgium, France, Netherlands, and United Kingdom. Currently classified as Endangered 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 Alder

The Brook Alder (Alnus maritima) is a species in the genus Alnus. It is currently classified as Endangered on the IUCN Red List. Typically found in diverse terrestrial habitats from tropical forests to temperate regions.