Grassland Whorl Snail vs marsh whorl snail

Vertigo ovata compared with Vertigo antivertigo

Key Differences

• Grassland Whorl Snail is Near Threatened while marsh whorl snail is Critically Endangered.

Taxonomic Classification

Rank	Grassland Whorl Snail	marsh 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 ovata	Vertigo antivertigo

Evolutionary Relationship

Grassland Whorl Snail and marsh whorl snail share a common ancestor at the Genus level: Vertigo.

Conservation Status

Grassland Whorl Snail

NT — Near Threatened

marsh whorl snail

CR — Critically Endangered

Physical Characteristics

Attribute	Grassland Whorl Snail	marsh whorl snail
Diet	—	—
Average Lifespan	—	—
Average Length	—	—
Average Weight	—	—

Habitat & Geographic 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.

marsh whorl snail

Habitat

Inhabits temperate broadleaf and mixed forests and Mediterranean forests and woodlands within the Palearctic biogeographic realm. Populations are also found in montane and highland environments at higher elevations.

Range

Found across Europe (8 countries). Currently classified as Critically Endangered on the IUCN Red List, this species faces significant conservation challenges across its range.