Margarella turneri

From Wikipedia, the free encyclopedia

Margarella turneri
Scientific classification
Kingdom: Animalia
Phylum: Mollusca
Class: Gastropoda
Subclass: Prosobranchia
Order: Archaeogastropoda
Superfamily: Trochacea
Family: Trochidae
Genus: Margarella
Species: M. turneri
Binomial name
Margarella turneri
Powell, 1939

Margarella turneri is a species of marine gastropod mollusc in the family Trochidae, the top shells.

Contents

[edit] Distribution

This top shell is endemic to New Zealand's Stewart Island.

[edit] Habitat

It is found on seaweed covered rocks at low tide, but never under kelp holdfasts.

[edit] Shell description

The shell is globose, with little expansion of the last whorl, imperforate, but with a narrow crescentic, callus-filled umbilical depression.

Coloration is purplish-brown or reddish zigzag axial bands, often crossed by several pink spiral lines, the whole on a pinkish-white to creamy ground. The interior of the aperture is greenish iridescent.

The maximum shell height is 8.5 mm, and width 9 mm.

[edit] References