N a very small barb 小倒刺
When these grasp on to the hooklets of neighboring barbules, they create a structural network.
当它们抓住邻近小枝的钩状物时，就形成了一个结构网络。
The finding suggests that the barbs and barbules evolved before the rachis in feathers.
该发现表明，羽毛中的羽枝和小羽枝是先于羽轴进化出来的。
But this specimen lacked the rachis; it just had barbs and barbules down its ribbonlike tail.
但这件标本没有羽轴，带状尾巴上只有羽枝和小羽枝。
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