Scissurella costata
| Scissurella costata | |
|---|---|
 | |
| Drawing with an apertural view of the shell of Scissurella costata | |
| Scientific classification | |
| Kingdom: | Animalia |
| Phylum: | Mollusca |
| Class: | Gastropoda |
| (unranked): | clade Vetigastropoda |
| Superfamily: | Scissurelloidea |
| Family: | Scissurellidae |
| Genus: | Scissurella |
| Species: | S. costata |
| Binomial name | |
| Scissurella costata d'Orbigny, 1824 [1] | |
| Synonyms | |
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Scissurella costata is a species of minute sea snail, a marine gastropod mollusk in the family Scissurellidae.[2]
Description
The size of the shell varies between 1 mm and 2.5 mm. The thin, white shell is transparent. The spire is depressed, and composed of 4 whorls that are plane on their upper surfaces, strongly carinated at the periphery, and convex below the carina. The body whorl is very large,and widely umbilicated. The oblique aperture is subquadrangular. The simple columella is arcuate. The simple lip is sinuous, with a narrow profound fissure. The slit fasciole forms the carina of the whorls, with elevated, lamellar edges, and arcuate growth lamellae. The umbilicus is broad and deep. It is carinated at the border. The surface is sculptured with arcuate longitudinal riblets, widely spaced and a little undulating, and fine spiral striae. [3]
Distribution
This marine species occurs off Spain (Tenerife), Canary Islands), Portugal (Madeira)and in the Mediterranean Sea and the Adriatic Sea.
References
- ↑ d'Orbigny, Mem. Soc. Hist. Nat. Paris I, p. 340, t. 23, f. 2, 1823.
- ↑ Scissurella costata d'Orbigny, 1824. Retrieved through: World Register of Marine Species on 11 April 2010.
- ↑ G.W. Tryon (1890), Manual of Conchology vol. XII
External links
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