|
Hydrobia Sulculata
''Hydrobia'' is a genus of very small brackish water snails with a gill and an operculum (gastropod), operculum, aquatic animal, aquatic gastropod mollusks in the family Hydrobiidae.Gofas, S. (2011). Hydrobia Hartmann, 1821. Accessed through: World Register of Marine Species at http://www.marinespecies.org/aphia.php?p=taxdetails&id=138081 on 2011-06-14 Species Species within the genus ''Hydrobia'' include: *Extinction, † ''Hydrobia abbreviata'' (Jean-Pierre Sylvestre de Grateloup, Grateloup, 1827) *Extinction, † ''Hydrobia acheila'' Spiridon Brusina, Brusina, 1902 *''Hydrobia aciculina'' (Bourguignat, 1876) *''Hydrobia acuta'' (Jacques Philippe Raymond Draparnaud, Draparnaud, 1805) ** subspecies ''Hydrobia acuta neglecta'' Muus, 1963 - synonym: ''Hydrobia neglecta'' Muus, 1963 *Extinction, † ''Hydrobia acutecarinata'' Neumayr in Neumayr & Paul, 1875 *Extinction, † ''Hydrobia aitai'' Jekelius, 1932 *Extinction, † ''Hydrobia alpha'' Jekelius, 1944 *Extinction, † ''Hydr ... [...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] |
