Biology:Solariella oxybasis
| Solariella oxybasis | |
|---|---|
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| Original drawing of a shell of Solariella oxybasis | |
Scientific classification 
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| Domain: | Eukaryota |
| Kingdom: | Animalia |
| Phylum: | Mollusca |
| Class: | Gastropoda |
| Subclass: | Vetigastropoda |
| Order: | Trochida |
| Superfamily: | Trochoidea |
| Family: | Solariellidae |
| Genus: | Solariella |
| Species: | S. oxybasis
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| Binomial name | |
| Solariella oxybasis Dall, 1890
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Solariella oxybasis is a species of sea snail, a marine gastropod mollusk in the family Solariellidae.[1]
Description
(Original description by W.H. Dall) The height of the shell attains 13.5 mm, its diameter 12.5 mm. The shell is closely related to Solariella regalis (Verrill & S. Smith, 1880) (synonym of [[Calliotropis regalis]]), from which it differs most obviously by its more acute and elevated spire, smaller umbilicus, angular periphery, and the aperture angulated in front by the juncture of the columella with the end of the umbilical carina. The shell is thin, pearly, with a pale, thin epidermis and six (or more) whorls without the nucleus. The nucleus of the type specimen is lost. The spire is acute. The body whorl enlarges disproportionately. The spiral sculpture consists of, on the spire, three revolving threads, the most anterior strongest and peripheral, the middle one least evident. The base of the shell has six subequal, strong, granular threads and two smaller ones, the latter just within the umbilicus. The transverse sculpture shows, on the body whorl, about eighteen sharp radii, extending to the periphery and forming sharp nodules at the intersections of the spirals. The nodules on the peripheral spiral are the most prominent and are almost spinose on the body whorl. Beside this the whole shell is covered with a fine, silky, transverse, slightly irregular striation. The suture is distinct, running on the first basal spiral and is not channeled. The umbilicus is very narrow, its margin subangulose. The aperture is quadrate, subangulate, at the periphery, in front, behind, and at the junction of the columella with the body. The body of the shell has a wash of pearl. The margin is continuous with the columella and is sharp, thin, and reflecting the sculpture. The columella is slightly arched, thin, reflected a little behind. The base is full and rounded, produced in the middle near the umbilicus.[2]
Distribution
This species occurs in the Pacific Ocean off Santa Barbara Island, California.
References
- ↑ Rosenberg, G. (2012). Solariella oxybasis Dall, 1890. Accessed through: World Register of Marine Species at http://www.marinespecies.org/aphia.php?p=taxdetails&id=593049 on 2012-12-03
- ↑ Dall, W.H. (1890) Scientific results of explorations by the U.S. Fish Commission Steamer Albatross. No. VII – Preliminary report on the collection of Mollusca and Brachiopoda obtained in 1887–88. Proceedings of the United States National Museum, 12, 219–362, pls. 5–14
External links
Wikidata ☰ Q3736780 entry
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