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> Grant Harding wrote:
> <I heard mention somewhere that someone once suggested
> (references please?) that the stiffened tail of
> dromaeosaurids was an early stage in the evolution of
> the pygostyle. As a result, I have a question: does
> _Sinornithosaurus_ have such a tail?
Apparently it does. While most of the tail is missing, there are the
following (quoting the caption to Figure 2):
spine of caudal vertebra
elongated prezygapophyses and chevrons of mid- and posterior caudal
These elements rest adjacent to one of the hands. They are easiest to
see in Figure 4, "_S. Millenii_, selected elements of the postcranial
The tail was stiffened by the elongate prezygapophyses, as in other
known dromaeosaurid dinosaurs.
-- Ralph W. Miller III email@example.com