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Pygostyle

   Also found in: Medical, Encyclopedia, Wikipedia 0.01 sec.
Py´go`style
n.1.(Anat.) The plate of bone which forms the posterior end of the vertebral column in most birds; the plowshare bone; the vomer. It is formed by the union of a number of the last caudal vertebræ, and supports the uropigium.
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The bird had flight-specialized shoulders and a distinctly avian adaption called the pygostyle -- a shortened set of tail vertebrae fused into one bone.
Chinese bird fossil: mix of old and new by Monastersky, Richard / Science News
Pygostyle (py), part of the tail, is at end of vertebrate column.
Bird fossil reveals history of flight by Monastersky, Richard / Science News
 
 
 
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