Cirsonella carinata
From Wikipedia, the free encyclopedia
| Cirsonella carinata | |
|---|---|
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| Original drawing of a shell of Cirsonella carinata | |
Scientific classification  | |
| Domain: | Eukaryota |
| Kingdom: | Animalia |
| Phylum: | Mollusca |
| Class: | Gastropoda |
| Subclass: | Vetigastropoda |
| Order: | Trochida |
| Superfamily: | Trochoidea |
| Family: | Skeneidae |
| Genus: | Cirsonella |
| Species: | C. carinata |
| Binomial name | |
| Cirsonella carinata (Hedley, 1903) | |
| Synonyms | |
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Cirsonella carinata, common name the ridged false-top-shell, is a species of small sea snail, a marine gastropod mollusk in the family Skeneidae.[1]
The height of the shell attains 1.7 mm, its diameter 1.8 mm. The minute, smooth and glossy, cream-colored shell has a turbinate shape. The four whorls have an impressed suture. The body whorl is bluntly keeled at the periphery. There is a sculpture of dense spiral microscopic striae. The base of the shell is rounded. The umbilicus is narrow and deep, and it is surrounded by a callus funicle which expands anteriorly to join the simple lip in an angular lobe. The aperture is subcircular.[2]