Re: Spinosaurs ate pterosaurs

[David Marjanovic <david.marjanovic@gmx.at>]

> Maybe I'm misunderstanding you, but I'm assuming it was either a
parachuter
> or a glider.  In both cases, the commute to earth could be better
controlled
> by the animal courtesy of aerodynamic drag or lift, and not simply be a
> 'free-fall'.

Had it been a parachuter, it would have had to climb back up the height of
the entire tree each time it had caught one insect. Less efficient even than
jumping up from the ground, right?

> Yeah, but baby dinosaurs have to eat too.  Hatchlings may have been fed by
> the mother, but at some stage young dinos had to fend for themselves.

Still I'd say that the short head is a juvenile feature, fitting others in
the same specimen, and that the long 3rd finger argues for a different
ecological niche anyway.