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Re: Flightless pterosaur question:




--- On Wed, 3/24/10, Saint Abyssal <saint_abyssal@yahoo.com> wrote:

> From: Saint Abyssal <saint_abyssal@yahoo.com>
> Subject: Re: Flightless pterosaur question:
> To: "David Peters" <davidpeters@att.net>
> Date: Wednesday, March 24, 2010, 5:25 PM
> Yes, atrophied pectoral musculature
> is hypothetically possible as a means to lose flight
> capability in flightless pterosaurs (assuming they exist)
> but considering how many examples of birds with reduced
> wings exist (penguins, dodos, ostriches, emus, cassowaries,
> etc.)compared to adequate-but-under-powered ones (your
> kagus) I think that flightlessness-by-muscle-loss is
> probably less likely in pterosaurs, too.
> 
> 
> We'll just have to wait for the fossils to find out! :D
> 
> ~Abyssal
> 
> 
> --- On Wed, 3/24/10, David Peters <davidpeters@att.net>
> wrote:
> 
> > From: David Peters <davidpeters@att.net>
> > Subject: Re: Flightless pterosaur question:
> > To: "Saint Abyssal" <saint_abyssal@yahoo.com>
> > Cc: "dinosaur mailing list" <dinosaur@usc.edu>
> > Date: Wednesday, March 24, 2010, 5:05 PM
> > Of course, but that's the easy
> > answer. Some flightless birds do not have absurdly
> short
> > wings. 
> > 
> > What's the threshold for flight/flightlessness?
> > 
> > Could it be found in the pectoral girdle, rather than
> the
> > wings?
> > 
> > Witness the Kagu:
> > 
> > http://en.wikipedia.org/wiki/Kagu
> > 
> > "The wings are not reduced in size like some other
> > flightless birds, but they lack the musculature for
> > flight."
> > 
> > D
> > 
> > 
> > --- On Wed, 3/24/10, Saint Abyssal <saint_abyssal@yahoo.com>
> > wrote:
> > 
> > 
> > > Absurdly short or gracile flight
> > > digits?
> > > 
> > > 
> > > > If flightless birds keep their wings,
> > > > how will we know (or what threshold will
> they
> > cross)
> > > that
> > > > tells us a pterosaur just can't fly?
> > > > 
> > > > Any predictions?
> > > > 
> > > > David Peters
> > > > davidpeters@att.net
> > > > 
> > > 
> > > 
> > >       
> > >
> > 
> 
> 
> 
>