肉鳍鱼
肉鳍鱼总纲（学名：Sarcopterygii）是硬骨鱼类个一个演化支。此类鱼个特点是鱼鳍中有一个中轴骨，拉前鳍个基部上有明显个肌肉组织搭分开个两片腹鳍，搭之后两栖动物搭四足类动物个演化有直接个关联性。
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