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Species of gastropod From Wikipedia, the free encyclopedia
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  | |
| Domain: | Eukaryota |
| Kingdom: | Animalia |
| Phylum: | Mollusca |
| Class: | Gastropoda |
| Subclass: | Vetigastropoda |
| Order: | Trochida |
| Superfamily: | Trochoidea |
| Family: | Trochidae |
| Genus: | Gibbula |
| Species: | G. zonata |
| Binomial name | |
| Gibbula zonata (Woods, 1828) | |
| Synonyms | |
| |
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]
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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