Ringicula marwicki

Ringicula marwicki is an extinct species of sea snail, a marine gastropod mollusc, in the family Ringiculidae. Fossils of the species date to early Miocene strata of the west coast of the Auckland Region, New Zealand.

Description

In the original description, Powell described the species as follows:
The holotype of the species measures in height and in diameter. The species is morphologically similar to R. torquata, but can be identified due to R. marwicki being smaller, having a less broadly conic spire and stronger subsutural border.

Taxonomy

The species was first described by A. W. B. Powell in 1935. The holotype was collected at an unknown date prior to 1935 from Te Waharoa Bay, south of Muriwai, Auckland Region, and is held in the collections of Auckland [War Memorial Museum].

Distribution

This extinct marine species occurs in early Miocene strata of the Tirikohua Formation of New Zealand, on the west coast of the Waitākere Ranges of the Auckland Region, New Zealand.