羽茎瘤是鸟类的次级飞羽(secondaries)或初级飞羽(primaries)通过韧带与骨骼相连接的地方,在相应骨骼上表现为小突起。
參考來源
ScienceDaily (Sep. 20, 2007) [http://www.sciencedaily.com/releases/2007/09/070920145402.htm Velociraptor Had Feathers] *
羽茎瘤是鸟类的次级飞羽(secondaries)或初级飞羽(primaries)通过韧带与骨骼相连接的地方,在相应骨骼上表现为小突起。
參考來源
ScienceDaily (Sep. 20, 2007) [http://www.sciencedaily.com/releases/2007/09/070920145402.htm Velociraptor Had Feathers] *
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