Cyclostrema subexcavatum is a species of sea snail, a marine gastropod mollusk in the family Liotiidae.[1]
| Cyclostrema subexcavatum | |
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| Original drawing with two views of a shell of Cyclostrema subexcavatum | |
Scientific classification 
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| Domain: | Eukaryota |
| Kingdom: | Animalia |
| Phylum: | Mollusca |
| Class: | Gastropoda |
| Subclass: | Vetigastropoda |
| Order: | Trochida |
| Superfamily: | Trochoidea |
| Family: | Liotiidae |
| Genus: | Cyclostrema |
| Species: | C. subexcavatum
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| Binomial name | |
| Cyclostrema subexcavatum Tryon, 1888
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| Synonyms | |
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Description edit
(Original description by G.W. Tryon) The height of the shell attains 2.2 mm. The umbilicus is wide, perspective and shallow. The shell is whitish under a yellowish brown, membraneous epidermis. The spire is scarcely raised. The 4 whorls increase rather slowly until the last, which is rather large. The suture is broadly, angularly impressed. A little below the suture there is a bluntly angulated spiral keel. And on the middle of the base, towards the oblique aperture there is another keel. The thin peristome is simple.[2]
Distribution edit
This marine species occurs off Puerto Rico at a depth of about 700 m.
References edit
- ^ Rosenberg, G. (2012). Cyclostrema subexcavatum. Accessed through: World Register of Marine Species at http://www.marinespecies.org/aphia.php?p=taxdetails&id=532707 on 2012-12-03
- ^ G.W. Tryon (1888), Manual of Conchology X; Academy of Natural Sciences, Philadelphia
- Watson, R. B. 1886. Report on the Scaphopoda and Gasteropoda collected by H.M.S. Challenger during the years 1873-1876. Report on the Scientific Results of the Voyage of H.M.S. Challenger, Zoology 15(2): i-v, 1-680, 692-756, 50 pls. Her Majesty's Government: London