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Vitrea Cyprina
''Vitrea'' is a genus of small, air-breathing land snails, Terrestrial molluscs, terrestrial pulmonate gastropod mollusks in the family Pristilomatidae. According to the World Register of Marine Species this genus belongs in the family ''Zonitidae''. Species This genus contains more than 60 species, including the following: subgenus ''Vitrea'' Fitzinger, 1833 * ''Vitrea diaphana'' (Studer, 1820) * ''Vitrea transsylvanica'' (Clessin, 1877) subgenus ''Subrimatus'' A. J. Wagner, 1907 * ''Vitrea narbonensis'' (Clessin, 1877) * ''Vitrea subrimata'' (Reinhardt, 1871) subgenus ''Crystallus'' R. T. Lowe, 1854 * ''Vitrea contracta'' (Westerlund, 1871) * ''Vitrea crystallina'' (O. F. Müller, 1774) subgenus ? * ''Vitrea contortula'' (Krynicki, 1837) * ''Vitrea garganoensis'' (E. Gittenberger & Eikenboom, 2006) * ''Vitrea inae'' * ''Vitrea nadejdae'' * ''Vitrea pseudotrolli'' * ''Vitrea pygmaea'' (Boettger, 1880) * ''Vitrea striata'' * ''Vitrea vereae'' Irikov, Georgiev & Riedel, 2004 ... [...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] |
