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Re: Last of the Pterosaurs



>>The long-tailed
pterosaurs all died out  at the end of the Jurassic,
but the short-tailed pterosaurs, the pterodactyloids,
survived and went from strength to strength. After
the Jurassic came the Cretaceous Period. It was warmer
and sea levels rose to cover much of the land.
Continets slowly drifted across the globe, crashed
into each other and gradually formed huge moutain
ranges. The pterodactyloids made the most of these new
conditions.<<

Isn't the current theory that Cretaceous pterosaurs were so large
because birds pushed them out of all the small-flier niches?


>> Quetzalcoatlus was so big that it could not
have taken off without help from the winds whistling
through the mountains and canyons of Texas, USA. Once
in the air, it could glide on the air currents for a
long time.<<

I doubt that any animal could survive if its mobility was so utterly
dependent on something as capricious as wind.  Who was that who did a
study of pterosaur anatomy and how those animals could have lifted off?
Didn't they use Quetzalcoatlus for that study?

Dan