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Siphonaria Irregularis
''Siphonaria'' is a genera, genus of air-breathing sea snails or false limpets, Marine (ocean), marine pulmonate gastropod molluscs in the family (biology), family Siphonariidae, the false limpets.Rosenberg, G.; Gofas, S. (2012). Siphonaria. Accessed through: World Register of Marine Species at http://www.marinespecies.org/aphia.php?p=taxdetails&id=138489 on 2012-07-04 Distribution This genus occurs worldwide in most tropical and temperate seas. Species According to the World Register of Marine Species (WoRMS), the following species are included in the genus ''Siphonaria'' * ''Siphonaria acmaeoides'' Pilsbry, 1894 * ''Siphonaria acuta'' Quoy & Gaimard, 1833 * ''Siphonaria aequilirata'' Carpenter, 1857 * ''Siphonaria aequilorata'' Reeve, 1856 * ''Siphonaria alba'' Hubendick, 1943 * ''Siphonaria albicante'' Quoy & Gaimard, 1833 * ''Siphonaria alternata'' Thomas Say, Say, 1826 * ''Siphonaria alternicosta'' Potiez & Michaud, 1838 * ''Siphonaria asghar'' Biggs, 1958 * ''Siphonari ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Gastropod Shell
The gastropod shell is part of the body of a Gastropoda, gastropod or snail, a kind of mollusc. The shell is an exoskeleton, which protects from predators, mechanical damage, and dehydration, but also serves for muscle attachment and calcium storage. Some gastropods appear shell-less (slugs) but may have a remnant within the mantle, or in some cases the shell is reduced such that the body cannot be retracted within it (semi-slug). Some snails also possess an operculum that seals the opening of the shell, known as the Aperture (mollusc), aperture, which provides further protection. The study of mollusc shells is known as conchology. The biological study of gastropods, and other molluscs in general, is malacology. Shell morphology terms vary by species group. Shell layers The gastropod shell has three major layers secreted by the Mantle (mollusc), mantle. The calcareous central layer, tracum, is typically made of calcium carbonate precipitated into an organic matrix known as c ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
