|
Oreohelix Anchana
''Oreohelix'' is a genus of air-breathing land snail, a terrestrial molluscs, terrestrial pulmonate gastropod mollusk in the family Oreohelicidae. ''Oreohelix'' is the type genus for the family Oreohelicidae. There are about 79 species in this genus. They are native to the western United States, especially the Rocky Mountains, Great Basin, and Southwestern United States, Southwest. Species Species within the genus ''Oreohelix'' include: *''Oreohelix alpina'' – alpine mountainsnail *''Oreohelix amariradix'' – Bitter Root mountainsnail *''Oreohelix anchana'' – Ancha mountainsnail *''Oreohelix barbata'' – bearded mountainsnail *''Oreohelix californica'' – Clark mountainsnail * ''Oreohelix carinifera'' – keeled mountainsnail *''Oreohelix concentrata'' – Huachuca mountainsnail *''Oreohelix confragosa'' – Pinos Altos mountainsnail *''Oreohelix elrodi'' – carinate mountainsnail *''Oreohelix eurekensis'' – Eureka mountainsnai ... [...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] |
