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Sinum Delessertii
''Sinum'' is a genus of predatory sea snails, marine (ocean), marine gastropod mollusks in the subfamily Sininae of the family (biology), family Naticidae, the moon snails. Most naticids have shells that are globular, but the shell of species in the genus ''Sinum'' is flattened to some extent, some being so flattened that they are ear-shaped. Distribution This marine species is cosmopolitan. Species Species within the genus ''Sinum'' include: * ''Sinum bifasciatum'' (Récluz, 1851) * ''Sinum concavum'' (Lamarck, 1822) * ''Sinum cortezi'' Burch & Burch, 1964 * ''Sinum cymba'' (Menke, K.T., 1828) * ''Sinum debile'' (Gould, 1853) * ''Sinum delesserti'' (Récluz in Chenu, 1843) * ''Sinum diauges'' Kilburn, 1974 * ''Sinum eximium'' (Reeve, 1864) * † ''Sinum faviai'' Lozouet, 2001 *'' Sinum grayi'' G. P. Deshayes, 1843 * ''Sinum haliotoideum'' (Linnaeus, 1758) * ''Sinum incisum'' (Reeve, 1864) * † ''Sinum infirmum'' Marwick, 1924 * ''Sinum japonicum'' (Lischke, 1872) * ''Sinum ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Gastropod Shell
The gastropod shell is part of the body of a 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, 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. The calcareous central layer, tracum, is typically made of calcium carbonate precipitated into an organic matrix known as conchiolin. The outermost layer is the periostr ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
