Gibbula zonata

Gibbula zonata is a species of sea snail, a marine gastropod mollusk in the family Trochidae, the top snails.[1]

Gibbula zonata
Drawing of a shell of Gibbula zonata
Scientific classification
Kingdom: Animalia
Phylum: Mollusca
Class: Gastropoda
Clade: Vetigastropoda
Order: Trochida
Superfamily: Trochoidea
Family: Trochidae
Genus: Gibbula
Species:
G. zonata
Binomial name
Gibbula zonata
(Woods, 1828)
Synonyms
  • Oxystele zonata Wood, Sowerby, 1892
  • Trochus cingulatus Muhlf, 1816
  • Trochus leaensis Watson
  • Trochus menkeanus Philippi
  • Trochus zonatus Woods, 1828

Description

The size of the shell varies between 6 mm and 10 mm. The rather solid shell is imperforate but excavated at the place of the umbilicus. It has a depressed-conical shape. It is whitish, with numerous spiral bauds and lines of purplish-brown. The surface is very lightly obliquely striate, closely, densely finely spirally striate, generally with three strong carinae, one at periphery, the others above. The about 5 whorls are convex, those of the upper surface bicarinate. The convex body whorl is carinate or subcarinate. The oblique aperture is rounded-quadrangular. It is nacreous inside with slight sulci at the positions of the external carina. The columella is a little straightened.[2]

Distribution

This species occurs in the Atlantic Ocean off Namibia and the western coast of South Africa; in the Indian Ocean off the Agulhas Bank.

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References
  1. Gibbula zonata (Woods, 1828). Retrieved through: World Register of Marine Species on 1 May 2010.
  2. Tryon (1889), Manual of Conchology XI, Academy of Natural Sciences, Philadelphia
  • "Gibbula zonata". Gastropods.com. Retrieved 16 January 2019.
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