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Ryssota Rhea
''Ryssota'' is a genus of air-breathing land snails, terrestrial animal, terrestrial pulmonate gastropod molluscs in the family Chronidae.MolluscaBase eds. (2021). MolluscaBase. Ryssota Albers, 1850. Accessed through: World Register of Marine Species at: http://marinespecies.org/aphia.php?p=taxdetails&id=995537 on 28 February 2021 Species Species within the genus ''Ryssota'' include: * ''Ryssota antoni'' (Semper, 1870) * ''Ryssota dvitija'' (O. Semper, 1866) * ''Ryssota gervaisii'' (Dubrueil, 1867) * ''Ryssota mororum'' Pilsbry, 1924 * ''Ryssota mulleri'' (Pfeiffer,1854) * ''Ryssota otaheitana'' (Férussac, 1820) * ''Ryssota sagittifera'' (L. Pfeiffer, 1842) * ''Ryssota sauli'' Bartsch, 1938 * ''Ryssota uranus'' (L. Pfeiffer, 1861) * ''Ryssota webbi'' Bartsch, 1938 ;Species brought into synonymy: * ''Ryssota balerana'' (Bartsch, 1939): synonym of ''Lamarckiella balerana'' (Bartsch, 1939) (original combination) * ''Ryssota lamarckiana'' (Lea, 1853): synonym of ''Lamarckiella sto ... [...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] |
