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Re: Pygostyle

At 09:05 PM 01/11/1999 -0800, you wrote:
>Why do you say unequiviocally that only advanced birds have pygostyles?  

If by "advanced bird" you mean Neornithes, the statement is clearly wrong.
If you mean "anything higher than Archaeopteryx" the statement is (barring
the new oviraptorian) correct.
Ronald I. Orenstein                           Phone: (905) 820-7886
International Wildlife Coalition              Fax/Modem: (905) 569-0116
1825 Shady Creek Court                 
Mississauga, Ontario, Canada L5L 3W2          mailto:ornstn@home.com