dextral

A genus of minute land shells, resembling Vertigo, but separated because they are dextral, while Vertigo is sinistral.

Dextral animals, with shell coiled pseudo-sinistrally; operculum with sinistral spiral; pallial cavity dorsal.

Shell thin, dextral, with prominent spire and oval aperture; no inferior pallial lobe.

Shell bulimoid, dextral or sinistral; radular teeth, expanded at their extremities and multicuspidate.

Vertigo (Sphyradium) edentula is dextral and without denticles.