pygostyle
/pahy-guh-stahyl/US // ˈpaɪ gəˌstaɪl //
火焰式
Definitions
n.名词 noun
- 1
Ornithology.
- : the bone at the posterior end of the spinal column in birds, formed by the fusion of several caudal vertebrae.
Examples
The posterior caudal vertebrae are not united together to form a pygostyle.
They all agree in having a short tail whose component vertebrae are commonly ankylosed together forming a pygostyle.
The tail is short and the posterior caudal vertebrae are generally ankylosed together forming a pygostyle.
The tail is comparatively long, and formed of twelve vertebrae with only slight indications of a pygostyle.
The last six or seven caudal vertebrae coalesce into the pygostyle, an upright blade which carries the rectrices.
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