Left right sclerite pairs are found which proves a bilaterally symmetrical body of the animal.

在前一种中，左右型对称骨片的存在证实该动物两侧对称。

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Left right sclerite pairs are found which proves a bilaterally symmetrical body of the animal.

在前一种中，左右型对称骨片的存在证实该动物两侧对称。

youdao