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Lower Heterobranchia : ウィキペディア英語版 | Lower Heterobranchia
Lower Heterobranchia, also known as the Allogastropoda, is a group of rather specialized, highly evolved sea slugs and sea snails, (marine gastropod mollusks) within the clade Heterobranchia. Although the great majority of Lower Heterobranchs are indeed marine, a few have succeeded in making the transition to freshwater. ==Description== The shell shapes in this group are typically those that are seen in the sundial, pyramid, rissoella and orbitestellid families of snails.〔http://www.molluscsoftasmania.net/Subclass%20pages/Heterobranchia.html〕
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「Lower Heterobranchia」の詳細全文を読む
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