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翻訳と辞書　辞書検索 [ 開発暫定版 ] スポンサード リンク Veneroida ： ウィキペディア英語版 Veneroida The Veneroida or veneroids are an order of mostly saltwater but also some freshwater bivalve molluscs. This order includes many familiar groups such as many clams and cockles that are valued for food, and a number of freshwater bivalves including the invasive species of zebra mussels. Until recently, the Carditoida (cockles and their allies) were usually included in this group. ==Description== Veneroids are generally thick-valved, equal valved, and isomyarian (that is, their adductor muscles are of equal size). Three main hinge teeth are characteristic of the subclass Heterodonta to which this order belongs. Many species are active rather than sessile. However they tend to be filter feeders, feeding through paired siphons, with a characteristic folded gill structure adapted to that way of life. In 2002, Gonzalo Giribet and Ward Wheeler suggested that the orders ''Myoida'' and ''Veneroida'' were not monophyletic. 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「Veneroida」の詳細全文を読む スポンサード リンク 翻訳と辞書 : 翻訳のためのインターネットリソース Copyright(C) kotoba.ne.jp 1997-2016. All Rights Reserved.