Zebinella heterolira
Zebinella heterolira is an extinct species of minute sea snail, a marine gastropod mollusk or micromollusk in the family Rissoinidae.
Description
The length of the shell attains 5.1 mm, its diameter 2 mm. It is moderately sized, spirally lirate, and axially costate shell. The shell has a high spire, about twice the height of the aperture, with lightly convex outlines and a flat-topped early whorls structure. The last two whorls bulge anteriorly, with a moderately distinct suture and clasping last whorl. The aperture is angled behind, strongly notched below the columella, and expands laterally at the base.
Distribution
Fossils of this species were found at Kaipara, Northern New Zealand.