molluscs

1.Many molluscs have tentacles.

很多软体动物有触角。

2.Unlike other molluscs, bivalves lack a radula and feature labial palps, which carry food from the gills to the mouth.

与其他软体动物不同的是,双壳贝缺乏齿舌,具有唇瓣,可将食物由鳃送到口部.

3.To avoid sampling bias, they restricted their analysis to one group of animals—the bivalve molluscs—that fossilise well.

为防止取样的偏颇，他们将析的对象限制在一类化石记录保存完备动物——双壳类软体动物。