Re: Spinosaurs ate pterosaurs

[Amtoine Grant <ajgrant@eastlink.ca>]

>   So why would a flying squirrel not climb another 30-60 feet back up 
> to
> gain a higher vantage point if it needed to forage further? This is 
> much
> more expeditious than walking along the ground for those few miles of 
> its
> foraging range, where it might become a target.

Then you also have to include the fact that there are also predators in 
the trees. Today, there are numerous birds, lizards, snakes, even 
insects that can make survival in the trees very risky. With it's back 
against the proverbial wall, a safe means of jumping from the branch or 
trunk on which the danger is presented WITHOUT splattering oneself on 
landing impact seems another viable reason for parachuting OR gliding 
behaviour.