瓣鳃是软体动物门瓣鳃纲特有的呼吸器官，分为外瓣鳃和内瓣鳃。结构上又分为鳃水管、瓣间隔、丝间隔、入鳃小孔、鳃丝和鳃上腔。
瓣鳃纲 [无脊椎] Lamellibranchia ; LameUibranchia ; class of bivalves ; Lamellibranchiaclass of bivalves
真瓣鳃目 Eulamellibranchia
瓣鳃类 lamellibranch ; Pelecypoda
瓣鳃类的 lamellibranchiate
瓣鳃动物 lamellibranch
瓣鳃牙系 lamellibranchiate dentiton
瓣鳃类幼体 [无脊椎] lamellibranchia larva
瓣鳃动物潜穴 pelecypod burrow
瓣鳃亚纲 Lamellibranchia
石千峰组又分为三段：平顶山砂岩段、瓣鳃泥灰岩段及石膏钙核段。
The Shiqianfeng Formation is subdivided into three members, namely, Pingdingshan sandstone, Lamellibranchiate marl and gypsum lime-nodule.
湖泊生物种群少且生物量低，缺失蓝藻和腹足类、瓣鳃类、甲壳类动物等为其区别于一般中、碱性湖泊最显著的特点。
Few species, low biomass and lack of blue green algae, Gastropoda, Lamellibranchia and Crustacea are most notable characteristics distinguished from general neutral and alkaline lakes.
当它无助地在水沟里挣扎时，鳃瓣张开，犹如在它头部两侧切开了两道深深的伤口。
The gill flaps opened like two gash wounds on the sides of its head as it thrashed helplessly in the gutter.
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