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RE: Really, *really* big pterosaurs?

Impressive. I wonder what the size limits might be for vertebrate
soarers? The Reuters article suggests a very thin airfoil and very light
skeleton in this animal, which makes sense, but how far can the
vertebrate soaring bauplan be extended in this regard? I think it's
fairly well accepted that powered, flapping flyers are limited to
wingspans less than half this width (Argentavis sp), but what are the
size/mass limits for vertebrate soarers?


-----Original Message-----
From: owner-dinosaur@usc.edu [mailto:owner-dinosaur@usc.edu] On Behalf
Of tholtz@geol.umd.edu
Sent: Thursday, September 08, 2005 8:38 PM
To: xrciseguy@prodigy.net
Cc: dinosaur@usc.edu
Subject: Re: Really, *really* big pterosaurs?

> To all  DMLers,
> This article discusses fragmentary fossil evidence
> which suggests that some pterosaurs may have had
> wingspans of up to 18 meters (60 feet.)
> http://news.yahoo.com/s/nm/20050908/sc_nm/pterosaur_dc
> Guy Leahy