Cyclostrema subexcavatum

Cyclostrema subexcavatum
Original drawing with two views of a shell of Cyclostrema subexcavatum
Scientific classification Edit this classification
Domain: Eukaryota
Kingdom: Animalia
Phylum: Mollusca
Class: Gastropoda
Subclass: Vetigastropoda
Order: Trochida
Superfamily: Trochoidea
Family: Liotiidae
Genus: Cyclostrema
Species:
C. subexcavatum
Binomial name
Cyclostrema subexcavatum
Tryon, 1888
Synonyms
  • Cyclostrema (Daronia) subexcavata Tryon, 1888 (original description)
  • Cyclostrema excavata Watson, 1886 (preoccupied by Carpenter)

Cyclostrema subexcavatum is a species of sea snail, a marine gastropod mollusk in the family Liotiidae.[1]

Description

(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

This marine species occurs off Puerto Rico at a depth of about 700 m.

References

  1. ^ 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
  2. ^ 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