Geyer’s Whorl Snail vs Grassland Whorl Snail

Vertigo geyeri compared with Vertigo ovata

Key Differences

• Geyer’s Whorl Snail is Vulnerable while Grassland Whorl Snail is Near Threatened.

Taxonomic Classification

Rank	Geyer’s Whorl Snail	Grassland Whorl Snail
Kingdom same	Animalia (Animals)	Animalia (Animals)
Phylum same	Mollusca (Mollusks)	Mollusca (Mollusks)
Class same	Gastropoda (Gastropoda)	Gastropoda (Gastropoda)
Order same	Stylommatophora (Stylommatophora)	Stylommatophora (Stylommatophora)
Family same	Vertiginidae	Vertiginidae
Genus same	Vertigo	Vertigo
Species	Vertigo geyeri	Vertigo ovata

Evolutionary Relationship

Geyer’s Whorl Snail and Grassland Whorl Snail share a common ancestor at the Genus level: Vertigo.

Conservation Status

Geyer’s Whorl Snail

VU — Vulnerable

Grassland Whorl Snail

NT — Near Threatened

Physical Characteristics

Attribute	Geyer’s Whorl Snail	Grassland Whorl Snail
Diet	—	—
Average Lifespan	—	—
Average Length	—	—
Average Weight	—	—

Habitat & Geographic Range

Geyer’s Whorl Snail

Habitat

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

Range

Found across Europe (6 countries). Currently classified as Vulnerable on the IUCN Red List, this species faces significant conservation challenges across its range.

Grassland Whorl Snail

Habitat

Found across multiple habitat types including temperate broadleaf and mixed forests, tundra, and tropical and subtropical moist broadleaf forests spanning the Australasia and Oceanian realms.

Range

Distributed across Mexico, New Zealand, and United States. Listed as Near Threatened, this species requires ongoing monitoring to prevent population decline.