单词 | 蛞蝓鱼类 |
释义 | 〔lancelet〕Any of various small, flattened marine organisms of the subphylum Cephalochordata, structurally similar to the vertebrates but having a notochord rather than a true vertebral column. Also called amphioxus 蛞蝓鱼类:任一种体形较小的头索动物纲的扁平海洋动物,它们在结构上与脊椎动物类似,但只有一个脊索而没有真正的脊椎 也作 amphioxus |
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