Pygostyle - définition. Qu'est-ce que Pygostyle
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Qu'est-ce (qui) est Pygostyle - définition

PART OF A BIRD
Pope's nose; Parson's Nose; Parsons nose; Popes nose; Sultans nose; Sultan's nose; Rectrical bulb; Rectrical bulbs; Rectricial bulbs; Rectricial bulb; Parson's nose; Uropygium; Uropygial; Uropyge; Pygostyles
  • ''[[Confuciusornis sanctus]]'' with "rod"-type pygostyle and the two central tail feathers
  • [[Pigeon]] skeleton with "plowshare"-type pygostyle (number 17)
  • ''[[Yixianornis grabaui]]'', one of the oldest known species with a pygostyle like that in living birds

Pygostyle         
·noun 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 vertebrae, and supports the uropigium.
Pygostyle         
Pygostyle describes a skeletal condition in which the final few caudal vertebrae are fused into a single ossification, supporting the tail feathers and musculature. In modern birds, the rectrices attach to these.
uropygium         
[?j??r?(?)'p?d???m]
¦ noun Zoology the rump of a bird.
Derivatives
uropygial adjective
Origin
C18: via med. L. from Gk ouropugion.

Wikipédia

Pygostyle

Pygostyle describes a skeletal condition in which the final few caudal vertebrae are fused into a single ossification, supporting the tail feathers and musculature. In modern birds, the rectrices attach to these. The pygostyle is the main component of the uropygium, a structure colloquially known as the bishop's nose, parson's nose, pope's nose, or sultan's nose. This is the fleshy protuberance visible at the posterior end of a bird (most commonly a chicken or turkey) that has been dressed for cooking. It has a swollen appearance because it also contains the uropygial gland that produces preen oil.