全骨下纲(学名:Holostei)是脊索动物门辐鳍鱼纲的一个下纲,是新鳍亚纲的两个演化支之一。
特征
本下纲的鱼类上颌皮内骨不与颊部骨骼连接,短时间内可以用鱼鳔直接呼吸空气。
分类
有颌下门 |
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Gnathostomata |
参考文献
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