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Re: titanosaurs



It is, and is probably easier to take advantage of 'from the ground up'
(like training wheels).  But that doesn't mean that flight origins
didn't include both 'ground up' and 'trees down'.  Personally, I think
they likely used both.

Dinogeorge@aol.com wrote:
> 

> In flight origins, gravitational energy is there for the taking.