This hypothesis groups annelids with mollusks and brachiopods in another superphylum, Lophotrochozoa.
该假说将圆环类动物与软体动物和腕足动物归为另一类，冠轮动物。
Sponges, corals and brachiopods, however, cannot do this.
而海绵类、珊瑚类和腕足类动物则做不到这一点。
More than 90% of Permiangenera of sponges, corals and brachiopods vanished in the extinction.
高过百分之九十海绵类、珊瑚类以及腕足类生物在大灭绝中消失了。
This paper analysed the carbon and oxygen isotope composition of brachiopods fossils from the Devonian Period in Sichuan Province.
本论文对来自四川龙门山泥盆纪的腕足化石进行碳、氧同位素分析。
Shelly creatures such as trilobites and brachiopods, of whose ancestors there is little sign in the rocks, are suddenly everywhere.
像三叶虫和腕足类一样的贝壳类生物是谁的祖先在岩石中得到一点提示，这些东西到处都是。
Aim To infer the life strategies of Early Cambrian brachiopods on muddy substrate from the brachiopods in the Chengjiang fauna of Yunnan, China.
目的系统分析滇东泥质基底澄江化石库腕足动物的生活方式。
During the Ordovician, most life was in the sea, so it was sea creatures such as trilobites, brachiopods and graptolites that were drastically reduced in number.
在奥陶纪，大多数生命都生活在海洋里，所以海洋生物，例如三叶虫、腕足类动物与笔石动物的数量在此时急剧减少。
During the Ordovician, most life was in the sea, so it was sea creatures such as trilobites, brachiopods and graptolites that were drastically reduced in number.
在奥陶纪，大多数生命都生活在海洋里，所以海洋生物，例如三叶虫、腕足类动物与笔石动物的数量在此时急剧减少。
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