腕足动物一种腕足动物属的海生无脊椎动物，具有双瓣的背甲和腹甲，其中包住一对手臂状的触手结构，用于将食物微料扫入口中

• Any of various marine invertebrates of the phylum Brachiopoda, having bivalve dorsal and ventral shells enclosing a pair of tentacled, armlike structures that are used to sweep minute food particles into the mouth.