the bone at the posterior end of the spinal column in birds, formed by the fusion of several caudal vertebrae.
- py·go·styled, adjective
- py·go·sty·lous, adjective
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How to use pygostyle in a sentence
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.