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Lithopoma

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Lithopoma
Shell of Lithopoma caelatum (Gmelin, 1791), with operculum, measuring 51.9 mm in height by 51.2 mm diameter, found on reefs off Fajardo, in Puerto Rico.
Scientific classification Edit this classification
Domain: Eukaryota
Kingdom: Animalia
Phylum: Mollusca
Class: Gastropoda
Subclass: Vetigastropoda
Order: Trochida
Superfamily: Trochoidea
Family: Turbinidae
Genus: Lithopoma
Gray, 1850[1]
Type species
Trochus tuber Linnaeus, 1758
Synonyms[2]
  • Astraea (Pachypoma) Gray, 1850
  • Pachypoma Gray, 1850

Lithopoma is a genus of medium-sized to large sea snails with a calcareous operculum, marine gastropod mollusks in the family Turbinidae, the turban snails.[2]

Description

The elevated, imperforate shell has a turbinate or trochiform shape. with a plicate spire that is flat or concave below. Its periphery is carinated or rounded. The base of the shell is somewhat convex. The whorls above are radiately plicate. The operculum is oval, outside coarsely granulose, and either simply convex or with a curved spiral rib with its terminations connected by a straight one. The nucleus is submarginal.[3]

Distribution

This genus occurs in the Caribbean Sea, the Gulf of Mexico and off the Lesser Antilles.

Species

Species within this genus were previously placed in the genus Astraea. They include:

Species brought into synonymy
  • Lithopoma gibberosa (Dillwyn, 1817) : synonym of Pomaulax gibberosus (Dillwyn, 1817)
  • Lithopoma gibberosum (Dillwyn, 1817): synonym of Pomaulax gibberosus (Dillwyn, 1817)
  • Lithopoma heliotropium (Martyn, T., 1784): synonym of Astraea heliotropium (Martyn, 1784)
  • Lithopoma imbricatum Gmelin, J.F., 1791: synonym of Lithopoma tectum (Lightfoot, 1786)
  • Lithopoma phoebium longispina Lamarck, J.B.P.A. de, 1822: synonym of Lithopoma phoebium (Röding, 1798)
  • Lithopoma tectum americanum (Gmelin, 1791): synonym of Lithopoma americanum (Gmelin, 1791)
  • Lithopoma tuber venezuelensis Flores, C. & Cáceres de Talarico, 1980: synonym of Lithopoma tuber (Linnaeus, 1758)
  • Lithopoma undosum (W. Wood, 1828): synonym of Megastraea undosa (W. Wood, 1828)

References

  1. ^ Gray J. E. (1850). Figs. Moll. Anim. 4: 88.
  2. ^ a b Bouchet, P.; Rosenberg, G. (2011). Lithopoma Gray, 1850. Accessed through: World Register of Marine Species at http://www.marinespecies.org/aphia.php?p=taxdetails&id=240760 on 2011-11-09
  3. ^ G.W. Tryon (1888), Manual of Conchology X; Academy of Natural Sciences, Philadelphia
  • Williams, S.T. (2007). Origins and diversification of Indo-West Pacific marine fauna: evolutionary history and biogeography of turban shells (Gastropoda, Turbinidae). Biological Journal of the Linnean Society, 2007, 92, 573–592
  • Alf A. & Kreipl K. (2011) The family Turbinidae. Subfamilies Turbininae Rafinesque, 1815 and Prisogasterinae Hickman & McLean, 1990. In: G.T. Poppe & K. Groh (eds), A Conchological Iconography. Hackenheim: Conchbooks. pp. 1–82, pls 104-245
Wikimedia Commons has media related to Lithopoma.
  • Malacolog info at: [1]


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