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(Claw),又称爪子钩爪,是大部份哺乳类、鸟类及部份爬虫类动物于手指及脚趾末端的表皮角质层附加物。

参考资料

  • 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

参考来源