Gyriscus asteleformis

Gyriscus asteleformis is a species of sea snail, a marine gastropod mollusk in the family Architectonicidae, known as the staircase shells or sundials.

Distribution
This species is endemic to New Zealand, found between the northern tip of the North Island and the Three Kings Islands.

Habitat
This species is found at depths of about 90 m.

Description
The shell height is up to 8 mm, and the width is up to 7.5 mm.