-
Pygostyle is a
skeletal condition in
which the
final few
caudal vertebrae are
fused into a
single ossification,
supporting the tail
feathers and musculature...
-
partial skeleton.
Baminornis is the
oldest known avialan to bear a
fused pygostyle. The
Baminornis holotype specimen, IVPP V33259, was
discovered in outcrops...
-
adaptation is the
fusing of
bones into
single ossifications, such as the
pygostyle.
Because of this,
birds usually have a
smaller number of
bones than other...
- maniraptoromorphs, and this
process culminated in the
appearance of the
pygostyle, an
ossification of
fused tail vertebrae. In the late Cretaceous, about...
- new
group called Sauriurae. Said simply,
modern birds have short,
fused pygostyle tails,
while Archaeopteryx retained the long tail
characteristic of non-avian...
- to the
pygostyle. The
Ornithothoraces have a ploughshare-shaped
pygostyle,
while the more
primitive members had longer, rod-shaped
pygostyles. The earliest...
-
quill ****s (the
anchor points for wing
feathers on the forelimb) or a
pygostyle (the
fused vertebrae at the tail tip
which often supports large feathers)...
-
According to Döderlein, the
reduced tail of
Anurognathus was
similar to the
pygostyle of
modern birds. Its more
typical "rhamphorhynchoid"
characters include...
-
Caudal vertebrae compose the tail, and the
final few can be
fused into the
pygostyle in birds, or into the
coccygeal or tail bone in
chimpanzees (and humans)...
- The
first element to
disappear was the bony tail,
being reduced to a
pygostyle and the tail
function taken over by feathers.
Confuciusornis is an example...
