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A girdle is part of the anatomy of a chiton, one class of marine mollusks, the class Polyplacophora. The shell of a chiton consists of eight shelly plates which articulate with one another. The girdle is a strong but flexible structure that in most cases encircles the plates, holding them all together. Details of the external surface of the girdle are often useful in identifying the taxonomic family, genus and species of chiton. For example, the girdle may be covered in overlapping scales, spikes, or it may have tufts of glassy bristles protruding from it. In a few genera of chitons, the girdle covers the valves either partially, as in the Black Katy chiton, or completely, as with the gumboot chiton. ==References== * (Glossary entry for molluscan terminology ) * (Some general info on chitons ) 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「Girdle (chiton)」の詳細全文を読む スポンサード リンク
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