Atlanta turriculata

Atlanta turriculata is a species of sea snail, a holoplanktonic marine gastropod mollusk in the family Atlantidae.
The shell is glassy, disc-shaped, broadly keeled, extremely thin, and transparent. The spire is very small, protruding, and tower-shaped. It is composed of five slightly convex whorls, with the final whorl being keeled.
The aperture is ovate-subacute, slightly reflected at the rear, and lightly notched at the front. The peristome is thin and sharp. The operculum is glassy, nearly oval, thin, transparent, and has few whorls.
This species is distinguished by its tower-like spire.