Re: The new Archaeopteryx from... Wyoming?

[jrc <jrccea@bellsouth.net>]

----- Original Message ----- 
From: "Thomas R. Holtz, Jr." <tholtz@geol.umd.edu>
To: "Guy Leahy" <xrciseguy@sbcglobal.net>; <dinosaur@usc.edu>
Cc: <frank@blissnet.com>; <tholtz@umd.edu>; <twilliams_alpha@hotmail.com>
Sent: Friday, December 02, 2005 7:52 AM
Subject: RE: The new Archaeopteryx from... Wyoming?


> Perhaps. Or (as I have argued before), perhaps actual powered flight is 
> limited to Pygostylia or even a more restricted clade

I missed that earlier discussion, Tom.  Could you fill me in (briefly) on 
why powered flight would be limited to Pygosylia?

Thanks,
Jim