鲎虫
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(鲎(hòu )虫(chóng ),鲎(hòu )虫(chóng ))
节(jiē )肢(zhī )动(dòng )物(wù ),甲(jiǎ )壳(ké )纲(gāng ),鲎(hòu )虫(chóng )科(kē )。外(wài )形(xíng )很(hěn )像(xiàng )鲎(hòu )鱼(yú )。身(shēn )体(tǐ )扁(biǎn )平(píng ),头(tóu )胸(xiōng )部(bù )有(yǒu )甲(jiǎ )壳(ké ),似(sì )龟(guī )、鳖(biē ),尾(wěi )部(bù )呈(chéng )叉(chā )状(zhuàng )。生(shēng )活(huó )在(zài )水(shuǐ )田(tián )或(huò )水(shuǐ )沟(gōu )中(zhōng )。俗(sú )称(chēng )王(wáng )八(bā )鱼(yú )、水(shuǐ )鳖(biē )子(zǐ )。
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