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维基百科,自由的百科全书

(Claw),又称爪子钩爪,是羊膜动物哺乳类鸟类爬虫类)于手指脚趾末端的表皮角质层附加物。

参考资料

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  • Maddin & al. (2009): The anatomy and development of the claws ofXenopus laevis (Lissamphibia: Anura) reveal alternate pathways of structural evolution in the integument of tetrapods. Journal of Anatomy, no 214 (4): pp 607-19 Abstract页面存档备份,存于互联网档案馆