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 Date: 2006-06-19 12:22:16Euenantiornithes Confuciusornis Confuciusornithidae Hand Radius Bone fracture Vescornis Neuquenornis Protopteryx Prehistoric birds Ornithology Enantiornithes |
| Feathers Feathers come in different shapes and have different functions or jobs to help birds. There are six general types of feathers. Flight feathers are found on the bird’s wing and tail. They are shaped to fan theDocID: 1l1hK - View Document |
| 第52卷 第1期 2014年1月DocID: 4O1y - View Document |
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