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Malleidae, or the hammer oysters, is a family of saltwater clams. They are related to the pearl oysters, in the order Pterioida〔Gofas, S. (2011). Malleidae. Accessed through: World Register of Marine Species at http://www.marinespecies.org/aphia.php?p=taxdetails&id=23067 on 2012-01-02〕 and the superfamily Pterioidea. The shells of most of these animals are T-shaped, with the hinge along the top of the T, and with the byssus emerging from the hinge. An oblique ligament holds the hinge. The shell is partially nacreous. There is a single, large adductor muscle. The exhalant current exits at the hinge. Most hammer oysters live in tropical, coralline areas. ==Genera== * ''Malleus'' Lamarck, 1799 * ''Neoaviculovulsa'' Okutani & Kusakari, 1987 The following genera have been brought into synonymy. * ''Brevimalleus'' McLean, 1947 accepted as ''Malleus'' Lamarck, 1799 * ''Fundella'' Gregorio, 1884 accepted as ''Malleus'' Lamarck, 1799 * ''Himantopoda'' Schumacher, 1817 accepted as ''Malleus'' Lamarck, 1799 * ''Malleolus'' Rafinesque, 1815 accepted as ''Malleus'' Lamarck, 1799 * ''Malvufundus'' de Gregorio, 1885 accepted as ''Malleus'' Lamarck, 1799 * ''Parimalleus'' Iredale, 1931 accepted as ''Malleus'' Lamarck, 1799 * ''Tudes'' Oken, 1815 accepted as ''Malleus'' Lamarck, 1799 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「Malleidae」の詳細全文を読む スポンサード リンク
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