Re: Theories on the extinction of dinosaurs

[John Bois <jbois@umd5.umd.edu>]

On Tue, 23 Nov 1999 Dinogeorge@aol.com wrote:

> Sorry, not glib. Asteroid impact >unquestionably< caused nonavian dinosaur 
> extinction.

> It is time for this fact to be recognized, 
> not to sit on one hand and then the other looking for obfuscations and 
> denial...

One last request: would you take a crack at answering earlier post on
frequency of pre K/T 2ndary flightlessness; and why birds didn't re-evolve
into non-avian dinosaur forms after the K/T.  This is another of those
questions which would seem to demand at least feasible hypotheses.
Perhaps you've already ventured into the Tertiary in the archives?