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pygostyle |
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pygostyle a bony termination of the vertebral column in birds formed by fusion of the last four to eight spinal vertebrae. Called also plowshare bone or rump post. The tail feathers are attached to its fascia so that it is very important in flight. Want to thank TFD for its existence? Tell a friend about us, add a link to this page, add the site to iGoogle, or visit the webmaster's page for free fun content. |
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