Dextral [adjective]

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.

A genus described as differing from Ancylus in being dextral.

Sinistral: Having the aperture of the shell at the left; opposite of dextral.

Dextral: Having the aperture on the right side of the shell when the apex is upward.

Gasteropod shells may be sinistral or dextral, according as the whorls turn to the left or right.

The sinistral circuit is one in which the center is on the left hand, while the dextral circuit has its center to the right.