Cyclostrema cancellatum is aspecies ofsea snail, a marinegastropodmollusk in thefamilyLiotiidae.[1]
| Cyclostrema cancellatum | |
|---|---|
 | |
| Drawing with a top view of a shell ofCyclostrema cancellatum | |
Scientific classification | |
| Domain: | Eukaryota |
| Kingdom: | Animalia |
| Phylum: | Mollusca |
| Class: | Gastropoda |
| Subclass: | Vetigastropoda |
| Order: | Trochida |
| Superfamily: | Trochoidea |
| Family: | Liotiidae |
| Genus: | Cyclostrema |
| Species: | C. cancellatum |
| Binomial name | |
| Cyclostrema cancellatum Marryat, 1818 | |
| Synonyms | |
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Description
editThe size of the shell varies between 8 mm and 15 mm. The white, sublenticular shell is flattened convex above, more convex below. It contains oblique radiating riblets, interrupted by an obtuse peripheral rib The interstices of the riblets are finely spirally striated. Theumbilicus has a moderate size.[2]
(Description byW.H. Dall) The thin, white shell has a planorboid shape with 3½whorls. The radiatingsculpture consists of about fifteen ridges, faint on the base and summit, making small nodules where they cross the fine spirals, and prominent and strong on the periphery between the three peripheral carinae. Other radiations are only due to lines of growth which are sometimes slightly elevated. The spiral sculpture consists of three prominent and strong peripheral ridges, of which the uppermost forms the chief periphery. The others are slightly nearer the axis. Between these, nearly square deep reticulations are formed by the radiating ridges before described. Beside these there are three faint spirals on the upper and three on the basal surface, nodulated at their intersections with the radii. There is an ampleumbilicus. The inner margin of theaperture is nearly circular, the outer part modified by the sculpture.[3]
Distribution
editThis species occurs in theCaribbean Sea, theGulf of Mexico and theLesser Antilles; in the Atlantic Ocean from southeastFlorida toBrazil at depths between 0 m and 2012 m. Found in the Cayman Islands.
References
edit- ^Cyclostrema cancellatum Marryat, 1818. Retrieved through:World Register of Marine Species on 22 April 2010.
- ^G.W. Tryon (1888), Manual of Conchology X; Academy of Natural Sciences, Philadelphia
- ^Dall W. H. 1889. Reports on the results of dredging, under the supervision of Alexander Agassiz, in the Gulf of Mexico (1877-78) and in the Caribbean Sea (1879-80), by the U.S. Coast Survey Steamer "Blake", Lieut.-Commander C.D. Sigsbee, U.S.N., and Commander J.R. Bartlett, U.S.N., commanding. XXIX. Report on the Mollusca. Part 2, Gastropoda and Scaphopoda. Bulletin of the Museum of Comparative Zoölogy at Harvard College 18: 1–492, pls. 10–40 (described asLiotia (Lipistes) acrilla)
- Kiener, L. C. 1838.Genre Dauphinule. (Delphinula, Lam.). Spécies Général et Iconographie des Coquilles Vivantes 10: 12 pp., 4 pls.
- Rosenberg, G., F. Moretzsohn, and E. F. García. 2009.Gastropoda (Mollusca) of the Gulf of Mexico, Pp. 579–699 in Felder, D.L. and D.K. Camp (eds.), Gulf of Mexico–Origins, Waters, and Biota. Biodiversity. Texas A&M Press, College Station, Texas.
External links
edit
- "Cyclostrema cancellatum".Gastropods.com. Retrieved16 January 2019.