pygostyle


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Related to pygostyle: Synsacrum

pygostyle

the upturned tip of the vertebral column of birds consisting of fused vertebrae.

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.
References in periodicals archive ?
And at the end of the vertebrate column, the fossil has a bone called a pygostyle, which is the skeletal basis of an avian tail.
Pygostyle (py), part of the tail, is at end of vertebrate column.