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Solemya Winkworthi
''Solemya'' is a genus of saltwater clams, marine (ocean), marine bivalve mollusks in the family Solemyidae, the awning clams. ''Solemya'' is the type genus of the family Solemyidae. Description The shell Valve (mollusc), valves of species in this genus are fragile and subcylindrical in shape; there are no hinge teeth. The shell has a persistent thin periostracum which extends beyond the valve margins, hence the common name "awning clams". These clams have chemosynthesis, chemosynthetic bacterial symbionts that produce their food. The bacteria live within their gill cells, and produce energy by oxidizing hydrogen sulfide, which they then use to fix carbon dioxide via the Calvin cycle. This symbiosis has been best-studied in the Atlantic species ''Solemya velum, S. velum'' and the Pacific species ''Solemya reidi, S. reidi''. Species Species within the genus ''Solemya'' include: * ''Solemya africana'' * ''Solemya atacama'' * ''Solemya australis'' * ''Solemya borealis'' * ''Solemya ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Holotype
A holotype is a single physical example (or illustration) of an organism, known to have been used when the species (or lower-ranked taxon) was formally described. It is either the single such physical example (or illustration) or one of several examples, but explicitly designated as the holotype. Under the International Code of Zoological Nomenclature (ICZN), a holotype is one of several kinds of name-bearing types. In the International Code of Nomenclature for algae, fungi, and plants (ICN) and ICZN, the definitions of types are similar in intent but not identical in terminology or underlying concept. For example, the holotype for the butterfly '' Plebejus idas longinus'' is a preserved specimen of that subspecies, held by the Museum of Comparative Zoology at Harvard University. In botany, an isotype is a duplicate of the holotype, where holotype and isotypes are often pieces from the same individual plant or samples from the same gathering. A holotype is not necessarily "typ ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
